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  • Bamboo Shrimp Care Guide: The Filter-Feeding Shrimp That’s Worth Watching

    Bamboo Shrimp Care Guide: The Filter-Feeding Shrimp That’s Worth Watching

    Bamboo Shrimp are filter feeders, not scavengers. They need current and suspended food particles to survive. If your shrimp is walking the substrate picking at food, it is starving.

    A bamboo shrimp walking the bottom is not getting enough food. Fix the flow.

    What It Is Actually Like Living With Bamboo Shrimp

    A shrimp tank is a constant show of activity. Shrimp graze nonstop, picking at every surface with their tiny legs. They crawl over plants, substrate, and even each other. The movement never stops.

    Molting is both fascinating and nerve-wracking. You will find translucent shed exoskeletons and panic thinking a shrimp died. It did not. But failed molts, where a shrimp gets stuck in its old shell, are always a risk.

    Berried females carrying eggs under their tails are a highlight. You watch the eggs develop over two to three weeks, then suddenly dozens of tiny baby shrimp appear on your moss and plants.

    Shrimp are escape artists during water changes. They jump into buckets, climb up siphon tubes, and end up in places you never expected. Always check your equipment and waste water for hitchhikers.

    Hard Rule

    Bamboo shrimp feed by filtering suspended particles from the water – they cannot be target-fed like other shrimp. Place them in an area of moderate-to-strong flow where food particles pass through their fans. A clean, low-flow tank starves them.

    Table of Contents

    The Bamboo Shrimp is one of the most rewarding invertebrates in the hobby, but it is also one of the most sensitive. Water parameters matter more here than with almost any fish. After keeping shrimp colonies for years, I have learned exactly what makes or breaks a thriving colony.

    One parameter swing and an entire colony dies overnight. That is the reality of keeping Bamboo Shrimp.

    A Bamboo Shrimp colony demands stable parameters every single day. One slip and you start over. This is a commitment to precision, not just maintenance.

    Shrimp keeping is the most humbling branch of the aquarium hobby. The water does not care about your experience level.

    What Most Care Guides Get Wrong About Bamboo Shrimp

    Want easy, forgiving shrimp? Start with cherry shrimp. Want a challenge with stunning payoff? Get crystal reds and commit to RO water.

    Most guides give you a cookie-cutter care sheet for Bamboo Shrimp without mentioning the nuances. After 25+ years in this hobby, I have seen how small details in tank setup and maintenance make a real difference in long-term health. Another thing guides gloss over is temperament. Bamboo Shrimp are often described with a single label, but their behavior shifts depending on tank size, tank mates, and territory. You need to plan for the worst-case scenario, not the best. Group size is another area where most guides fall short. Saying ‘keep them in groups’ is not enough. The difference between keeping 3 and keeping 8 or more is night and day when it comes to coloration, confidence, and natural behavior.

    The Reality of Keeping Bamboo Shrimp

    Water parameters rule everything. Shrimp are more sensitive to water chemistry than any fish in your tank. Ammonia, nitrite, and sudden pH swings kill shrimp instantly. A cycled, stable tank is absolutely mandatory before adding your first shrimp.

    Copper is lethal. Many fish medications contain copper. Even trace amounts from pipes, fertilizers, or treatments will wipe out an entire shrimp colony. Read every label before adding anything to a shrimp tank.

    Molting problems are the most common killer. Shrimp need consistent mineral content to molt successfully. Unstable GH and KH levels cause failed molts, which are fatal. Remineralized RO water gives you the most control.

    Biggest Mistake New Owners Make

    Adding shrimp to an uncycled tank or a tank that was recently medicated. Both scenarios kill shrimp within days. The tank needs to be fully cycled and medication-free for at least two weeks before shrimp go in.

    Expert Take (Mark Valderrama, AquariumStoreDepot)

    Drip acclimation is not a suggestion. It is mandatory. Every shrimp I have lost in 25 years died because I rushed the acclimation or ignored a parameter difference.

    Frequently Asked Questions

    Are bamboo shrimp hard to keep?

    Bamboo shrimp are moderate in difficulty. The main challenge is ensuring they get enough food, since they are filter feeders that catch fine particles from the water column. A tank with good flow and regular feeding of powdered foods or crushed flakes is essential for their survival.

    Why is my bamboo shrimp picking at the substrate?

    When a bamboo shrimp is picking at the substrate instead of fan feeding in the current, it means there is not enough food in the water column. This is a sign of hunger and stress. Try increasing your feeding of finely crushed foods or adding a dedicated liquid invertebrate food.

    How big do bamboo shrimp get?

    Bamboo shrimp can reach 3 to 4 inches in length, making them one of the largest freshwater shrimp commonly kept in aquariums. Their size and unique fan-feeding behavior make them an impressive display animal in planted community tanks.

    Can bamboo shrimp live with bettas?

    Bamboo shrimp can coexist with bettas in tanks of 20 gallons or larger. Their large size makes them unlikely targets for betta aggression. However, both species prefer different flow levels: bamboo shrimp need moderate current for feeding, while bettas prefer calmer water.

    How long do bamboo shrimp live?

    With proper care and consistent feeding, bamboo shrimp can live 4 to 6 years in captivity. They molt regularly as they grow, and providing calcium-rich water helps ensure healthy exoskeleton development. Poor nutrition is the most common cause of premature death.

    Key Takeaways

    • Bamboo shrimp are an interesting freshwater species of filter-feeding shrimp.
    • These shrimp have simple aquarium requirements but is sensitive when being transported.
    • Bamboo shrimp are very difficult to breed in captivity and have a short lifespan. They are reasonably more expensive than most other species available.

    ASD Difficulty Rating: Tier 2 – Intermediate

    Bamboo shrimp (Atyopsis moluccensis) are filter-feeding shrimp that need established tanks with suspended particulates to feed. They cannot survive in pristine low-flow tanks and should not be fed directly – they need flowing food.

    Species Overview

    Scientific Name Atyopsis moluccensis
    Common Names Bamboo shrimp, wood shrimp, Moluccas shrimp, Singapore flower shrimp, Singapore shrimp
    Family Atyidae
    Origin Native to Southeast Asia
    Diet Omnivore
    Care Level Easy
    Activity Moderate
    Lifespan 1 to 3 years
    Temperament Peaceful fish 
    Tank Level Middle and bottom
    Minimum Tank Size 20 gallons
    Temperature Range 68. 85 °F
    Water Hardness 3. 10 KH
    pH Range 6.5. 8.0
    Filtration/Water Flow Moderate to high
    Water Type Freshwater
    Breeding Egg Layer
    Difficulty to Breed Very difficul
    Compatibility Community
    OK, for Planted Tanks? Yes

    Classification

    Phylum Arthropoda
    Class Malacostraca
    Order Decapoda
    Family Atyidae
    Genus Atyopsis
    Species A. Moluccensis (De Haan, 1849)

    Introduction

    Many hobbyists adore saltwater aquariums for their bright and colorful fish. But have you ever seen a freshwater tank filled with vibrant and active shrimp? The freshwater hobby is filled with different shrimp species that are easy and rewarding to keep.

    One of the most popular species of freshwater shrimp to keep is the bamboo shrimp, also commonly known as the Singapore shrimp or wood shrimp. Scientifically, the bamboo shrimp is known as Atyopsis moluccensis. Unlike other popular species of freshwater shrimp, the bamboo shrimp is not a dwarf species in itself, though a dwarf relative has been discovered: Atyopsis spinipes1.

    Bamboo shrimp are great shrimp to keep in the freshwater aquarium. They get along with almost every fish, are relatively hardy, and help keep the tank clean. They aren’t the most colorful species of freshwater shrimp available, though, which can make experienced keepers look past them.

    Origin

    It is hard to believe, but bamboo shrimp originate from areas where bamboo naturally grows. This is largely throughout Southeast Asia, including parts of Thailand, Indonesia, Sri Lanka, and the Philippines.

    There, these shrimp feed on plant and animal particles in the water column as well as in the substrate. Interestingly this is an Asian filter-feeding shrimp. This means that these shrimp have specially adapted claspers with a feathery, fan-like appearance. This allows them to stand in a moderate to strong water current with their fans pointed outwards to catch anything that passes by.

    Because they’re filter feeders, they are found in a warm, fast-moving natural habitat that is full of debris and other organic material.

    Appearance

    Bamboo shrimp aka flower shrimp aren’t the most colorful shrimp. There’s a reason why they’re also known as wood shrimp.

    Bamboo Shrimp on Driftwood

    Bamboo shrimp are one of the largest freshwater aquarium shrimp available, growing to about 2 to 4 inches. They are bulky shrimp with large, rounded bodies. As fan shrimp, they have two pairs of feathery arms that help them pull food particles out of the water.

    These shrimp are brownish-red but can become darker or lighter depending on available food and other environmental factors. Upon closer inspection, you can see many thin, dark pinstripes run along the sides of their body. Down the middle of their body is a thick off-white stripe that runs from their antennae to the base of their tails.

    Male vs. Female

    Bamboo shrimp are pretty costly. Considering that they only live for a couple of years, it is expensive to replace your colony so often. Because of this, many shrimp keepers try breeding bamboo shrimp, though we’ll find out that this is a challenge in itself.

    To breed bamboo shrimp, you need to have a male and female individual. These shrimp are easy to tell apart from each other, but only when they’re mature in size.

    Like other shrimp and crustaceans, you need to look at the abdomen of the shrimp. Female shrimp carry eggs in and around their pleopods, or swimming legs, underneath their abdomen, so this area needs to be big.

    In general, males are larger than females. Males also have bigger, thicker first walking legs. From above, male bamboo shrimp are slimmer and shorter than females. Females have wider and longer abdomens, as well as longer pleopods.

    Temperament and Behavior

    Want easy, forgiving shrimp? Start with cherry shrimp. Want a challenge with stunning payoff? Get crystal reds and commit to RO water.

    Bamboo shrimp are perfect tank mates for a community tank setup. Their larger size also makes them compatible with some of the bigger tropical fish species available as long as temperaments match.

    Despite their large size, they is shy with sudden movements and bright lights. It may take several weeks for a new shrimp to acclimate to its new home, so make sure to add plenty of hiding spots in the beginning.

    In general, this fan shrimp can safely be kept with all community fish species. They spend most of their time propped up on plant leaves or other aquarium decorations in the water current with their fans extended. If your fan shrimp is traveling to the bottom of the tank to look for food in the substrate, then this could indicate that there isn’t enough available food in the water column.

    While a healthy bamboo shrimp may still display this behavior, it’s strongly recommended to start offering more available foods that make feeding easier.

    Bamboo Shrimp Tank Mates

    Not too many hobbyists have a shrimp tank that only features bamboo shrimp. This shrimp species is often an afterthought to a community tank featuring other tropical fish and invertebrates. Luckily, they fit in with almost every tank mate combination!

    How Many Should Be Kept Together?

    Bamboo shrimp are not territorial towards each other or other shrimp. That being said, there are a few limiting factors that can stop you from keeping multiple bamboo shrimp together.

    First, space can become an issue. Not for the reason you may think, though. Instead, bamboo shrimp are very efficient filter feeders that can clean available food particles out of the water column within a few days. This can lead to a shortage of food when there is too much competition.

    Second, bamboo shrimp are large shrimp. Though they’re not aggressive, they can add additional bioload to the aquarium that can add up over time.

    In general, as long as your shrimp are easily able to find food and have good filtration, then you can keep as many as you would like together.

    Best Tank Mates For Them

    But what other shrimp and fish can you keep with your bamboo shrimp? Almost everything!

    The good news is that bamboo shrimp are large freshwater shrimp. Most tropical fish have small mouths, which takes bamboo shrimp off the menu. This makes bamboo shrimp a great choice for a betta tank, though you will need to create some areas of higher flow in the aquarium that your betta might not appreciate!

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    These shrimp keep to themselves in the aquarium and won’t bother other peaceful fish. Because they perch on live plants and other decorations, they also stay out of the way of bottomfeeders and other active species. Some of the best tank mates for bamboo shrimp are:

    Can They Live With Other Shrimp?

    Yes! Bamboo shrimp can live with other freshwater shrimp, specifically dwarf shrimp species. Because these shrimp aren’t the most colorful on their own, many hobbyists keep them with cherry shrimp (Neocaridina davidi) and vampire shrimp (Atya gabonensis). Other less colorful tank mates include Amano shrimp (Caridina multidentata) and ghost shrimp (Palaemonetes paludosus).

    Least Compatible Fish For Them

    Although large shrimp, bamboo shrimp are still an appetizing choice for fish with large mouths. Fish that should be avoid are:

    It should also be noted that bamboo shrimp should not be kept with crayfish, like the Mexican dwarf crayfish (Cambarellus patzcuarensis). Even though these two invertebrates might look similar to one another, the crayfish will gladly eat your shrimp.

    Care

    Want easy, forgiving shrimp? Start with cherry shrimp. Want a challenge with stunning payoff? Get crystal reds and commit to RO water.

    Bamboo shrimp care is easy, but there are a few ways you can guarantee the success of your shrimp. These shrimp only live a couple of years on average, so you want to make the most of it! They are also much more expensive than other shrimp in the aquarium trade.

    Are They Hard To Keep?

    Bamboo shrimp aren’t one of the hardiest shrimp varieties available. They are susceptible to incorrect or fluctuating water parameters, which can make transferring them between different freshwater aquariums difficult. Your shrimp is most likely to die within the first few days of having it in your tank.

    To prevent this from happening, it’s strongly recommended to use a quarantine system that gives full control over tank conditions. Purchase from a reputable seller that keeps juvenile shrimp so that you get the most time with your new invertebrate.

    Is the Bamboo Shrimp Right for You?

    Before you buy a Bamboo Shrimp, take an honest look at whether your setup and experience level are a good match. This is not about gatekeeping. It is about setting both you and the fish up for success.

    • Experience level: Bamboo Shrimp are a solid choice for beginners. They tolerate a range of conditions and bounce back from minor mistakes. If you are new to fishkeeping, this is a forgiving species to start with.
    • Tank size commitment: A 20-gallon tank works as a minimum. This is a manageable size for most hobbyists, which is part of what makes this species accessible.
    • Temperament considerations: Bamboo Shrimp is territorial or aggressive. You need to plan tank mates carefully and provide enough space and cover to reduce conflict. They are not a good fit for peaceful community tanks with small, shy fish.
    • Feeding requirements: Bamboo Shrimp are omnivores that accept a wide range of foods. A quality pellet or flake as a staple, supplemented with frozen or live foods, keeps them healthy and shows off their best coloration.
    • Group requirements: These are schooling fish that need to be kept in groups of 6 or more. Keeping fewer leads to stress, dull coloration, and abnormal behavior. Budget for the full group, not just one or two.
    • Water type: This is a saltwater species. You need a fully cycled marine setup with proper salinity, filtration, and water chemistry. Saltwater tanks are more expensive and demanding than freshwater, so factor that into your decision.
    • Long-term commitment: Make sure you are ready for the full lifespan of this species. Fish are not disposable pets. Research their needs thoroughly before buying, and make sure you can provide consistent care for years to come.

    Tank Requirements

    The best bamboo shrimp care will stem from a good aquarium setup. These shrimp need a mature aquarium where they can feed on the fine particles and microorganisms already present in the water column.

    A new tank setup is too clean and will need to be heavily fed to sustain your shrimp.

    Tank Size

    You’ve most likely seen a small tank filled with cherry shrimp at your local fish store. Since bamboo shrimp are similar to other shrimp species, does this mean that they is kept in a small tank too?

    No. Bamboo shrimp prefer a larger tank setup for a few reasons.

    First, bamboo shrimp are large shrimp. While they don’t move around the tank much, they create significantly more bioload than small shrimp. They may also struggle to be present in the tank if there are too many other shrimp occupying the space.

    Another reason why bamboo shrimp need a larger tank is that they heavily depend on their natural habitat for food. These shrimp need plenty of available food in the water column for their success. A small tank has much less available food, which can cause your shrimp to quickly run out of things to eat.

    How Many Can You Put In A 55 Gallon Tank?

    There are a lot of factors that go into determining how many bamboo shrimp you can have in your tank. In theory, a 55 gallon could hold a lot of shrimp! But this probably isn’t the best option.

    Consider how much natural food is available in your aquarium. Is there a constant supply of plant debris? How often do you feed your fish? Are your shrimp competing for the same food as other fish or invertebrates?

    There are some questions you should be asking yourself before you introduce multiple bamboo shrimp into your aquarium. That being said, it’s recommended to keep 1 bamboo shrimp per every 20 gallons of water. This would mean that about 2 to 3 bamboo shrimp could comfortably be kept in a 55 gallon aquarium.

    Setup

    Aquarium setup doesn’t matter too much when keeping bamboo shrimp as they’ll find their niche within the system. However, there are a few ways you can optimize your shrimp’s way of living.

    One of the most important aspects of keeping bamboo shrimp is making sure that there is some water current moving throughout the aquarium. These shrimp come from naturally fast-moving waters where they stand in the current to filter food. Experienced keepers use their filter return or a powerhead to create a stream of water current specifically for their shrimp.

    A powerhead pairs well with a sponge filter. This combination allows for water flow as well as a bioload station for bamboo shrimp to pick at if they don’t feel like catching their food.

    Otherwise, bamboo shrimp do not need any special aquarium setup. I prefer to dim their lighting or use tannins to create a more comfortable environment for these shy shrimp.

    Decor

    Bamboo shrimp do best in a heavily planted aquarium where there are plenty of organics available in the water. This is a high or low tech setup with varying lighting intensities; as mentioned before, bamboo shrimp are more present in dimmer lighting.

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    These shrimp will appreciate natural decor in the form of driftwood, smooth rocks, and leaf litter. However, they can also be kept in more artificial setups as well.

    Substrate

    The type of substrate you keep your bamboo shrimp on doesn’t matter too much. These shrimp stay off the substrate, staying perched on driftwood and aquarium plants.

    For the most natural tank setup, a light or dark brown substrate is recommended.

    Live Plants

    Bamboo shrimp will greatly appreciate an assortment of live plants. These shrimp will make their home in dense vegetation, catching any food that happens to pass by. Plant matter will also enter the water column, providing additional food for your shrimp.

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    These do not need to be difficult plant species as the coverage will be appreciated nonetheless. Some of the best plant species include:

    A densely planted aquarium might require dosing plant fertilizers if not enough nutrients are readily available for growth.

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    Water Quality And Filtration

    Want easy, forgiving shrimp? Start with cherry shrimp. Want a challenge with stunning payoff? Get crystal reds and commit to RO water.

    Bamboo shrimp are relatively hardy shrimp but they still require mature tank conditions. Good filtration and water circulation are necessary for keeping a happy and healthy bamboo shrimp.

    Filtration & Aeration

    As mentioned before, bamboo shrimp will do best with a sponge filter in combination with a powerhead. This creates an area for grazing around the filter while also making a current that your shrimp can stand in.

    For larger tanks, a hang on the back filter or canister filter is recommended for better filtration and water movement. A powerhead may still be necessary to create areas of higher flow for your shrimp.

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    An air stone is not necessary, though can help circulate water and nutrients.

    Water Parameters

    Bamboo shrimp are sensitive to imperfect water parameters. They cannot tolerate any traces of ammonia or nitrite and start to have trouble when nitrates exceed 20 ppm. They is kept in a wide water temperature range between 68 and 85° F but prefer relatively neutral pH levels between 6.5 and 8.0.

    One of the more important water parameters to be aware of is calcium. Freshwater shrimp go through the molting process about every month and a half. This is when they shed their old exoskeleton to grow.

    To grow a new shell, they need plenty of calcium available in the water. While this is brought in through water changes and diet, bamboo shrimp may be given special shrimp calcium blocks from time to time.

    Aquarium Maintenance

    Aquarium maintenance for bamboo shrimp is straightforward, especially in a mature tank where parameters are stable. In general, a 10-25% weekly or biweekly water change is recommended for a moderately stocked freshwater aquarium. Bamboo shrimp prefer slightly ‘dirtier’ conditions where food is available in the water column, so experienced keepers only do water changes every other week or once a month.

    When performing a water change, make sure to use an aquarium vacuum to remove any rotting food or plant matter.

    Testing Tank Conditions

    To ensure that your tank is always running the best that it can, regularly test your aquarium water with a dependable test kit. This test kit should use liquid reagants as testing strips are highly inaccurate.

    Calcium should also be tested with a test kit.

    Food And Diet

    While most shrimp is maintained through only the leftover fish food in the aquarium, bamboo shrimp require some special care and attention when it comes to their food and diet.

    Don’t worry, though! Bamboo shrimp feeding doesn’t require too much extra time.

    If you notice that your shrimp is searching around sponge filters or wandering around the substrate, there is a lack of food. At this point, it’s strongly recommended to supplement feedings.

    Powdered food, crushed fish food, broken-up algae wafers, and small live food may be given daily.

    Bamboo shrimp will not fix an algae problem, meaning that they won’t graze on available algae. Instead, they’ll help purify the water of any microscopic waste or organisms that could lead to an algae bloom.

    Breeding

    Breeding bamboo shrimp is rarely done in the aquarium hobby. Like Amano shrimp, bamboo shrimp need brackish water during their larval stages.

    To go about breeding bamboo shrimp, you need a male and a female. Once successfully bred, the fertilized eggs must be gently detached from the female and moved to brackish water conditions. From there, the fry may be fed spirulina powder until they mature.

    Where To Buy

    Bamboo shrimp are pretty expensive. Their sensitivity to stresses during transportation also makes them slightly difficult to come across at your average pet store. Because they’re difficult to breed in captivity, they also can’t be sourced from fellow hobbyists.

    Instead, these shrimp is purchased online or from more specialized retailers.

    Conclusion

    Bamboo shrimp are one of the most overlooked filter feeders in the hobby. They need a good source of suspended food in a mature aquarium setup. They are slightly sensitive to changes in environment and water conditions and have short lifespans.

    Still, they’re great invertebrates to have for controlling excess waste and potential algae blooms!

  • German Blue Ram Care Guide: The Most Beautiful Dwarf Cichlid (That’s Not for Beginners)

    German Blue Ram Care Guide: The Most Beautiful Dwarf Cichlid (That’s Not for Beginners)

    Table of Contents

    German Blue Rams are the most beautiful dwarf cichlid in freshwater fishkeeping. They are also one of the most frequently killed. Most people do not lose them because they got unlucky. They lose them because their tank was not stable enough, their water was not warm enough, or they added them too early. I have kept these fish on and off for over 20 years, and I still treat every new batch like a test of whether my tank is actually dialed in. If your setup is not rock solid, this fish will die. It is that simple.

    If you are willing to meet their demands, a pair of German Blue Rams in a well planted tank is one of the most stunning setups in the hobby. But if you cut corners, they will punish you for it. This guide is the honest version of GBR care. Not the watered down one you will find everywhere else.

    German Blue Rams do not tolerate mistakes. They expose them.

    If your tank cannot hold a steady 82 to 84 degrees with zero ammonia and minimal nitrates, you are not ready for this fish. That is not gatekeeping. That is just the reality of keeping a species this sensitive.

    The German Blue Ram is proof that beauty and difficulty are directly proportional in fishkeeping.

    German Blue Rams only live 2 to 4 years, but those years demand pristine water quality, consistent temperatures above 82F, and a level of attention most keepers are not ready to provide.

    No other freshwater fish packs this much color into this small a body. And no other fish punishes sloppy husbandry this fast.

    Why Most People Fail With German Blue Rams

    I have watched this play out dozens of times. Someone sets up a new tank, cycles it for a few weeks, and then adds a pair of German Blue Rams as their centerpiece fish. Within two weeks, one or both are dead. Here is why it keeps happening.

    They add them to tanks that are not mature enough. A cycled tank is not the same as a stable tank. GBRs need established biological filtration, stable pH, and a tank that has been running for at least two to three months with other fish in it. A brand new cycle with zero biofilm and fluctuating parameters will kill them. Not eventually. Within weeks..

    The temperature is too low. Most community fish do fine at 76 to 78 degrees. German Blue Rams need 82 to 84. That is not optional and it is not a range you can fudge. If your tank sits at 78, your rams will be sluggish, lose color, and start declining within days. And once a GBR starts going downhill, you rarely get them back..

    Water parameter swings kill them fast. A pH swing of even 0.5 in a short period will stress a GBR enough to trigger illness. They are not like hardy cichlids that bounce back from rough conditions. Once a German Blue Ram starts declining, you have a very small window to fix things before you lose the fish.

    They pick the wrong tank mates. Anything fast, aggressive, or nippy will stress GBRs into hiding. And a stressed ram is a dead ram. Tiger barbs, serpae tetras, and most mbuna are automatic disqualifiers. Stick with calm, slow moving species that occupy different levels of the tank.

    The Reality of Keeping German Blue Rams

    I am not going to sugarcoat this. German Blue Rams are one of the most demanding freshwater fish you can keep. They look incredible, but they are completely unforgiving if your setup is not right.

    They crash fast. A healthy GBR can go from vibrant and active to dead in 48 hours if something shifts in the tank. Ammonia spike, temperature drop, pH swing. Any of these triggers a decline that you cannot reverse once it starts. You do not get second chances with this fish. German Blue Rams are a precision fish. They reward perfection and punish everything else.

    The temperature requirement limits your tank mate options. At 82 to 84 degrees, you are ruling out a lot of common community fish that prefer cooler water. Cardinals, rummy noses, and sterbai corydoras work. Most other tetras and corydoras do not thrive at those temps long term.

    They look amazing when everything is right. A male GBR in full color in a heavily planted tank is one of the most beautiful things in freshwater fishkeeping. But that only happens when water quality is pristine, temperature is locked in, and stress is minimal. One off parameter and the colors fade within days.

    Biggest Mistake New German Blue Ram Owners Make

    They buy them too early. The fish looks incredible at the store, they impulse buy a pair, and they add them to a tank that has been running for three weeks. The rams are dead within ten days and the owner blames the fish. The fish was not the problem. The tank was not ready.

    Expert Take (Mark Valderrama, AquariumStoreDepot)

    Never add German Blue Rams to a tank that has been running for less than three months. This is not a suggestion. This is the single rule that separates people who keep GBRs alive from people who keep buying replacements. A cycled tank is not the same as a mature tank. They need established biofilm, stable parameters, and a bacterial colony that can handle their sensitivity. This is the single most important piece of advice I can give you.

    Key Takeaways

    • German blue ram is named after a famous fish collector and importer from Germany known as Manuel Ramirez.
    • They have spiny rays in their anal, pelvic, pectoral, and dorsal fin to ward off their predators.
    • German blue ram loves digging up the substrate, so put hardy plants and floating plants in their aquarium
    • Electric blue ram is an open spawner; i.e., the wild German rams form a family group and lay around 200 eggs in their natural habitat.

    ASD Difficulty Rating: Tier 2/3 – Intermediate-Advanced

    German blue rams are one of the most sensitive commonly kept cichlids. They require stable temperatures of 78-84 degrees F (26-29 degrees C), very soft acidic water, a mature tank, and high-quality water. Not for beginners or new tanks.

    Species Overview

    Scientific NameMikrogeophagus ramirezi
    Common NamesGerman blue ram, blue rams, electric blue rams, Butterfly cichlid
    FamilyCichlidae
    OriginOrinoco River basin of South America in the Llanos of Venezuela and Colombia
    DietOmnivore
    Care LevelModerate to Difficult
    ActivityMedium
    Lifespan3 to 4 years 
    TemperamentPeaceful fish 
    Tank LevelAll levels
    Minimum Tank Size10 gallons
    Temperature Range78.0 to 85.0° F
    Water Hardness6 – 14 dGH
    pH Range6.0 – 7.5
    Filtration/Water FlowModerate
    Water TypeFreshwater
    BreedingEgg Layer/Open spawner
    Difficulty to BreedEasy
    CompatibilityLimited, Generally small fish with the same temperament 
    OK, for Planted Tanks?With Caution

    Classification

    OrderCichliformes
    FamilyCichlidae
    SubfamilyGeophaginae
    GenusMikrogeophagus
    SpeciesM. ramirezi (Myers & Harry, 1948)

    Brief Introduction

    The German Blue Ram or Mikrogeophagus ramirezi goes by many names including, German Ram, Electric Blue Rams, Butterfly Cichlid, Golden Ram, Ramirez’s dwarf cichlid, Ramirezi, Ram cichlid, and Ram. The German blue rams are named after Manuel Ramirez1. one of the first collectors and importers of Ram cichlids in the aquarium trade.

    German blue ram is a peaceful fish that can easily be kept in community tanks, even with non-cichlid fish species with a similar temperament. For the record, these fish do not do well in an aggressive fish tank. 

    Origin & Habitat

    Opposed to their name, the German blue rams originated from the Orinoco River basin in Venezuela and Colombia. The reason they are called “German Blue” rams is that the blue variation of Ram cichlids was selectively bred in Germany and became popular from there. 

    Appearance

    The electric blue ram is a small, colorful fish with pointed fins and a tail. Their bodies are oval and the males develop more pointed dorsal fins than female German blue rams. 

    Blue Ram Cichlid in Planted Tank

    Starting at their nose, there is a yellow coloration on their body that changes from whitish blue to blue in color. A black curved line runs from their forehead, through their eyes, and reaches down to the chin. Also, the middle part of the body is adorned with a black spot. They have pointed fins that are clear yellow in color with a black blotch. Female Electric blue rams have pinkish-red or orange bellies.

    Like all other cichlids, the German blue rams have a full set of pharyngeal teeth located in their throat. They also have spiny rays in their anal, pelvic, pectoral, and dorsal fin to ward off their predators. The front area of their fins is soft, allowing them to move precisely and effortlessly. 

    Unlike other fish, German blue rams have one nostril on each side of the nose. So, they sense smells in water by sucking in water and expelling it right after it’s sampled.

    What is the average adult size?

    The Electric blue ram is a small fish, reaching the average size of between 2-2.5 inches (5-6 cm) in length. 

    How long do they live?

    The average lifespan of German blue ram largely depends on their water conditions, diet, and overall care. Under normal circumstances, German blue rams live around 3 to 4 years, while some individuals may live up to 5 years.

    Food & Diet

    In their natural habitat, wild German blue rams feed on plant materials and small invertebrates. However, in captivity, they feed on a varied diet, including brine shrimp, bloodworms, white worms, chopped earthworms, cyclopeeze, live mosquito larvae, and artemia. You can also feed them flake food and pellets as occasional treats. 

    How often to feed them?

    you need to to feed two to five small amounts of food once or twice a day to keep the water quality optimal for longer periods.

    Temperament and Behavior

    Fish owners love German blue rams for their ever pleasing nature and beautiful aesthetics. And rightfully so, German blue rams thrive in community tanks even with their non-cichlid mates. However, they may seem aggressive; they are more “bark than bite”. 

    You can keep them alone, but you need to to keep them in pairs and avoid putting two males in an aquarium until your tank is exceptionally large.

    German Blue Ram Tank Mates

    Here are some great tank mates for a German blue ram cichlid tank:

    Complete Care Guide

    No matter how low maintenance German blue rams are, the key to keeping your fish happy lies in the water quality. German blue ram cichlids are prone to rapid breathing and illness due to mismatched water chemistry and quality. Therefore, meeting their tank requirements and maintaining the water quality is essential for the survival of German blue rams.

    Tank Requirements

    Here’s a complete breakdown of ideal tank requirements for the German blue ram cichlids.

    Tank Size

    Since they are small community aquarium fish, the recommended tank size is around 15 gallons.

    Live Plants

    Keeping live plants in a German blue ram aquarium sounds daunting because most aquatic plants cannot tolerate the warm water temperature. Therefore, it is essential to get plants that can survive the hot water. 

    Also, German blue rams love digging and so, they might hurt your aquatic plants. To cater to this, I suggest keeping plants like Java Ferns and mosses. You can also add floating plants, especially to the breeding tank to diffuse the lighting. Some great examples of live plants are:

    1. Java Fern
    2. Rosette plants (Amazon Sword, Vallisneria, Wisteria)
    3. Mosses
    4. Anubias
    5. Cryptocoryne
    6. Water sprite

    Make sure to leave free swimming space while placing plants in their aquarium and install a proper filtration system for their successful survival. 

    Tank Decorations

    German blue Rams love a well decorated tank. And even though they thrive in a community aquarium, sometimes, they might need to find a safe, comfortable place to hide. Therefore, aquarium decorations should be provided with caution.

    You can equip their tank with driftwood, flowerpots, dense plant clusters, caves, and rocks to mimic their natural habitat and keep them happy.

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    Make sure all the decorations are the aquarium and fish-friendly with no sharp edges to create a healthy and stimulating environment.

    Substrate

    A substrate of fine sand mixed with gravel and granite pebbles works best for a German blue ram tank. That’s because sand mixed with gravel allows your fish to sift through it, which is a natural behavior for them in the wild.

    Additionally, you can go for plant substrate or bare bottom as per your preferences and tank requirements.

    Note: Make sure your substrate does not leech into the water and change the pH. Avoid using sand for marine tanks

    Is the German Blue Ram Right for You?

    Before you commit to this species, here’s an honest assessment of whether it fits your setup and experience level.

    • One of the most beautiful freshwater fish alive. A healthy, fully colored German blue ram is genuinely stunning. the iridescent blue and gold are unmatched.
    • Not for beginners. I can’t emphasize this enough. If you haven’t successfully kept other sensitive fish, you’re not ready for this one.
    • Temperature is non-negotiable. 82-84°F minimum. This limits your tank mate options to species that also thrive in warm water.
    • Perfect for warm, soft-water planted tanks. If you already run a planted tank with CO2 and acidic water, German blue rams feel right at home.
    • Buy from reputable breeders, not chain stores. Locally bred rams from a quality breeder are significantly hardier than mass-produced imports.
    • Short lifespan even with perfect care. 2-3 years is typical, which feels short given the effort required to keep them healthy.

    Filtration and Aeration

    Maintaining Oxygen levels and water quality leads to a happy, healthy tank with a thriving German blue ram. 

    German blue ram, like any other fish loves a clean and clear environment with low nitrates, ammonia, and zero nitrites. Therefore, a filter that can handle all these toxins and the size of your aquarium is much needed. 

    I recommend getting a canister filter for a larger tank. However, for a 10-gallon tank, a hang-on filter works wonders. I also suggest installing a filter with a biological filtration system to break down harmful chemicals and waste substances in the water effortlessly.

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    For aeration, you need to to provide an air stone or bubble wand to create the flow of bubbles. To save yourself money and time, you can get a filter integrated with an air pump to help aerate the water besides filtering. 

    Water Parameters

    The ideal water parameters for German blue Ram are:

    • Recommended temperature range: 78.0 to 85.0° F 
    • Breeding Temperature:– 77 – 82.4° F 
    • Ideal pH range: 6.0-7.5
    • Water Hardness Range:6 – 14 dGH

    Aquarium Care

    I recommend performing water changes of 10% to 20% at least biweekly, depending on the number of fish and tank size. German blue ram is super sensitive to certain chemicals and changes in their environment to the point of their sudden demise. 

    Also, they are prone to fish tuberculosis or Piscine. Therefore, aquarium maintenance is the key to keeping them healthy and happy. I also advise cleaning and sanitizing their tank decorations and other stuff with a sponge. It is also recommended to vacuum the substrate to remove the waste and all the food.

    Breeding

    Before setting up a breeding tank, it is important to know that the German blue ram is an open spawner; i.e., the wild German blue rams form a family group and lay around 200 eggs in their natural habitat.

    Therefore, in captivity, start with 6 juveniles and let them bond. After they have bonded successfully, move the breeding pair to their own respective tanks.

    Requirements for a breeding tank

    1. The ideal water temperature for a breeding tank is around 77 – 82.4° F. They prefer slightly acidic and soft water.
    2. Provide quiet areas for them as they are usually nervous and may end up eating their own eggs if stressed, Also, provide lots of hiding places such as caves and plants, especially wide leaves to spawn on. 
    3. you need to to tape the sides of your tank with a taping paper to alleviate stress.

    The breeding process

    Before spawning, the breeding pair usually spend lots of time cleaning the top of pebbles. After they are comfortable and spawned, the female German blue ram lays around 200 eggs and the male ram cichlid fertilizes them externally. Once they have successfully spawned, you will notice the colors of the pair have intensified drastically. 

    After 60 hours, the eggs hatch, and just after a few days, the fry will be swimming freely.

    Note: German blue ram are known to eat their own fry after hatching, thus, you may put the young ones into a separate tank

    Once the fry is free swimming, the male ram takes them into its mouth to clean and then spits them out.

    After the yolk sac has disappeared, you can feed the fry micro worm or infusoria. You can also feed them newly hatched baby brine shrimp.

    Always remember to maintain the water quality while feeding the fry. you need to to perform 10% water changes every day. 

    Fish Diseases

    Despite being hardy fish, the German blue ram is vulnerable to poor water quality and oxygenation. Hence, resulting in several fish diseases.

    One of the most common problems is Ich, which is caused by parasitic infestations from protozoa or worms. Other common diseases include:

    1. Costia disease
    2. Flatworms
    3. Cestoda or tapeworm infestations
    4. Bacterial infections and diseases
    5. Fish tuberculosis
    6. Skin flukes

    FAQs

    Are German blue Rams difficult to keep?

    No, they are moderately easy and not difficult to keep. Still, not recommended for beginners because they demand top-notch water quality and they are very sensitive to certain chemicals and water changes that might pose a challenge to beginner aquarists. 

    Are German blue rams schooling fish?

    No, they are not schooling fish but like to be in pairs or small groups of 6 individuals mainly. They is territorial, especially while breeding, and may show aggression towards other fish. Therefore, it is important to provide them with lots of hiding places and plants to rest on and reduce stress, and aggression. 

    What is the difference between a blue ram and a German Blue Ram?

    There is absolutely no difference between a blue ram and a German blue ram. Both of the names are given to the same species, “Mikrogeophagus ramirezi”. The blue ram cichlid or a German blue ram is a name given to the same species of blue color morph which is a small and peaceful fish found in the streams of Venezuela and Colombia.

    Do German blue rams need caves?

    Yes, the German blue ram needs lots of hiding places to alleviate the stress and reduce aggression towards other fish. Therefore, caves, rocks, and aquatic plants are essential for their survival.

    Are the German Rams hard to keep?

    Yes – they are very demanding of their water quality and tank requirements. Therefore, a novice fish keeper might not be able to keep them. 

    What is the lifespan of a German ram?

    German blue rams typically have a life expectancy of 3 to 4 years, while some may reach 5 years. The water quality, nutrition, and general care of German blue rams all affect how long they live on average. 

    How big do blue ram cichlids get?

    The usual size of the electric blue ram is between 2-2.5 inches (5. 6 cm), making it a small fish. 

    What It Is Actually Like Living With German Blue Rams

    When everything is dialed in, German Blue Rams are mesmerizing. Here is what the day to day actually looks like.

    They own the bottom of the tank. A pair of GBRs will claim a territory around a cave or flat rock and patrol it constantly. They are not aggressive about it the way mbuna are, but they make it very clear that this is their spot. Other fish learn to stay away.

    The color changes tell you everything. A happy, healthy GBR is electric. Deep blues, bright yellows, vivid black markings. When something is off, the colors wash out almost immediately. You learn to read your ram like a dashboard. If the color fades, something in the tank needs attention right now.

    Breeding behavior is fascinating. If you get a bonded pair, watching them clean a spawning site, lay eggs, and guard fry together is one of the best things in the hobby. They are attentive parents when conditions are right. Most first attempts fail, but when it clicks, it is incredibly rewarding.

    You will check on them constantly. More than any other fish I have kept, GBRs make you pay attention. You will find yourself walking by the tank just to confirm they are still active and colorful. That is not anxiety. That is just what happens when you keep a fish this responsive to its environment.

    How the German Blue Ram Compares to Similar Species

    The Bolivian ram is the comparison every German blue ram buyer needs to make honestly. Bolivian rams are hardier, tolerate temperatures from 72-79°F, handle a wider pH range, and live longer (4-5 years vs. 2-3 for German blue rams). They’re not as spectacularly colored, but they’re still attractive fish with great personality. If I had to recommend one ram species to someone who’d never kept dwarf cichlids, it would be the Bolivian ram every single time. Save the German blue ram for after you’ve proven you can maintain stable warm, soft water conditions.

    The cockatoo dwarf cichlid (Apistogramma cacatuoides) is another excellent comparison. Cockatoos are hardier than German blue rams, tolerate a wider range of conditions, and males are incredibly flashy with their extended dorsal fins. They also breed more readily in captivity. The cockatoo is my recommendation for anyone who wants a colorful dwarf cichlid with breeding potential but isn’t ready for the demands of a German blue ram.

    Final Thoughts

    German blue rams or electric blue rams are beautiful freshwater fish with a peaceful temperament. However, they are not beginner friendly and require some exceptional care in pristine water conditions. 

    If not taken care of properly, the fish might show signs of stress and illness, eventually leading to their death. Therefore, proper tank maintenance and tank setup should be exercised to avoid accidents. 

  • Freshwater Angelfish Care Guide: What You Need to Know

    Freshwater Angelfish Care Guide: What You Need to Know

    Hard Rule

    Freshwater angelfish need a minimum 24-inch (60 cm) tall tank – their height at full size exceeds 6 inches (15 cm) with fins. Standard 18-inch tanks cramp their fin movement and cause chronic stress. Tank height is the critical dimension.

    Table of Contents

    Freshwater angelfish are one of the most popular cichlids in the hobby and one of the most misunderstood. They are not community fish in the way most people think. They eat small tetras, bully slow swimmers, and become territorial nightmares when they pair off. I have kept angelfish for over 25 years and the most common mistake I see is stocking them with fish they will eventually eat. It happens every single time. The community fish that stops being a community fish the moment it is big enough to eat its neighbors.

    The community fish that eats the community.

    What Most Care Guides Get Wrong About Freshwater Angelfish

    The most persistent myth about angelfish is that they’re peaceful community fish. They’re cichlids. They eat small fish. I can’t tell you how many times I’ve heard from keepers who watched their angelfish eat their neon tetras overnight. If it fits in an angelfish’s mouth, it’s food. And adult angelfish have surprisingly large mouths. The other major misconception is tank size. Yes, a single angelfish can technically survive in a 20-gallon tall tank, but a pair or small group needs 55 gallons minimum. Their tall body shape means they need vertical space too, not just footprint.

    Freshwater angelfish are one of the most recognizable fish in the hobby. And one of the most misunderstood. People buy them as juveniles thinking they’re peaceful community fish, then are surprised when a 6-inch adult starts eating neon tetras and bullying everything in the tank. I’ve kept angelfish for years and they’re genuinely wonderful fish, but they need the right setup and the right tank mates. This care guide covers what actually matters from my experience, not just the textbook requirements.

    There are a few differences between male and female angels, but they is hard to see. One of the only, though not always guaranteed, ways to tell these fish apart is by examining their behavior. Male angelfish will show much more territorial behavior than females, though some females is just as aggressive.

    In general, it’s best to shop from pet stores that already have an established breeding pair. Otherwise, a small group of juvenile angelfish is purchased and maintained until a breeding pair has formed.

    Once a pair has formed, they angelfish mate on their own. The water temperature may be slightly elevated, and the quality of food increased to encourage spawning. When ready, the female will release eggs that the male will fertilize. Angelfish parents are very protective of their eggs and should be kept together during this time.

    Within a few days, the eggs will hatch the fry will become free-swimming. Baby brine shrimp are great to feed these newborn fish as the yolk sacs of newly hatched brine shrimp offer a lot of nutritional value to them. The parents will continue offering protection during this time but have been known to eat their fry if not supplied with enough food!

    Fry may be fed tiny foods, like brine shrimp nauplii, until ready to accept bigger portions.

    Fish Diseases

    Though angels are hardy fish, they’re susceptible to a few unique diseases and illnesses. Like other fish, they can contract ich, velvet, and fin rot, especially if their long fins are allowed to scrape across objects in the aquarium. Here are a few less common problems you will experience with your angelfish:

    1. Cloudy eyes. Cloudy eyes are never a good sign in fish. They’re indicative of a larger bacteria, fungus, or parasitic infection. Cloudy eyes are caused by poor water quality and can be treated with consistent water changes and light medication treatment.
    2. Gill flukes. These are parasites that take over the fish’s gills and cause inflammation, difficulty breathing, and secondary infections. Gill flukes are a little more difficult to treat than affected fish experiencing cloudy eyes and can require medication, dips, and consistent water changes.
    3. Hexamita. Another parasitic infection, Hexamita causes hole in the head for angels. This is caused by water quality and can be treated by removing carbon from the aquarium, medications, and water changes.

    When picking out your new fish, find angelfish that are bright in color, round in the head, and with clear eyes. If possible, ask the employees at the pet stores to feed the fish in front of you. There should be no hesitation to eat. Once home, quarantine your angels accordingly.

    Conclusion

    Angelfish are cichlids first and community fish second. Forget that and your neon tetras disappear.

    Plan the tank around them, not the other way around. Get the height right, get the tank mates right, give them vertical space and plants, and freshwater angelfish will reward you with one of the most visually impressive tanks in the hobby. They have earned their reputation over 90 years in the trade for a reason.

    South American Cichlid Species Directory

    This article is part of our South American Cichlids: Complete A-Z Species Directory. Visit the hub page to explore care guides for all 32 South American cichlid species we cover.

  • 21 Types of African Cichlids: An Honest Guide to the Best Species

    21 Types of African Cichlids: An Honest Guide to the Best Species

    African cichlids are some of the most visually stunning fish in freshwater. I’ve always said they’re the closest thing to a saltwater display you can get without the saltwater complexity. I’ve set up Malawi and Tanganyika tanks over the years and both have their own distinct character. This guide covers the species I find most interesting and most manageable.

    African cichlids are some of the most colorful freshwater fish on the planet. and I’ve been keeping them for decades across everything from Lake Malawi mbuna setups to Lake Tanganyika shellies. The diversity is staggering: over 1,600 species, wildly different temperaments, and care requirements that vary significantly by species. This guide covers 21 of the best choices I’d actually recommend, with honest notes on what makes each one work (or not) in a home aquarium.

    Expert Take (Mark Valderrama, AquariumStoreDepot)

    African cichlids are the closest thing to saltwater fish color in a freshwater tank. After 25 years in the hobby, I still recommend them to keepers who want high visual impact without managing a reef. The catch: they need hard, alkaline water, high stocking density to spread aggression, and a lake-specific approach. Mix lake types and you will have problems. Keep them right and you get one of the most spectacular freshwater displays available.

    Key Takeaways

    • African cichlids are some of the most colorful, active, and exotic freshwater fish. They look a lot like tropical reef fish at first glance.
    • Most species come from the hard alkaline waters of Lake Victoria, Tanganyika, and Malawi.
    • Many African cichlids are highly territorial and aggressive, so choose tank mates carefully.
    • Other African cichlids make the best tank mates, but not all species are compatible.
    • Pay close attention to your cichlid’s diet. Many species need a mostly vegetarian diet, and high-protein fish food can cause health problems.

    Major Groups

    African cichlids are a diverse group of freshwater fish found all over the African continent. They range in size from the diminutive 2-inch shell-dwellers to the emperor cichlid that reaches 3 feet!

    Most of the popular African cichlids in the aquarium hobby come from Lake Malawi, although there are many famous species from Lake Tanganyika and Lake Victoria too.

    African cichlids are usually grouped into a few main categories. Let’s take a look at the most popular groups:

    Mbunas

    The mbuna cichlids are some of the most popular African Cichlids in the hobby. These small to medium-sized fish are hardy, colorful, and active. However, mbuna cichlids have a dark side too.

    Mbuna Cichlids

    These fish are highly territorial and can be very aggressive toward other fish. The males are the most aggressive, and they tend to attack other males of their own species or other similar-looking fish.

    Ideally, you should keep them in a species-only setup with one male and a few females, or in a heavily stocked mixed mbuna tank that does not allow enough space for individual territories.

    Mbuna’s come from Lake Malawi and are mostly herbivorous. They will eat some meaty fish food, but too much is very bad for their health.

    Peacocks

    Peacock Cichlids are awesome African cichlids from the Aulonocara genus. The males are some of the most colorful freshwater fish on the planet, although females tend to be drab and mostly brown or gray.

    Blue Peacock Cichlid

    These fish come from Lake Malawi, just like the Mbunas, but that doesn’t mean the two groups make ideal tank mates.

    Peacock cichlids are mostly carnivorous, and they are less aggressive than Mbunas. The differences in diet and the likelihood of fighting make it better to ‘pick a side’ in most cases.

    Peacock cichlids are pretty easy to breed, but you should take care to avoid cross-breeding them with similar species. The females look very similar, so keep just one species in your tank to avoid confusion.

    Haps

    Haps are a diverse group of generally larger carnivorous African cichlids. They are fairly peaceful fish, but many of them of piscivorous which means they will eat any tank mates small enough to swallow.

    Hap Cichlid

    Haps need a large tank with plenty of swimming space to really thrive. Many species will require over a hundred gallons, but there are options for a 75-gallon tank.

    Tropheus

    These popular Lake Tanganyika cichlids are similar in behavior to the mbunas of Lake Malawi. There are about 8 species and they prefer to live in rocky areas, especially with plenty of caves and other hiding spots.

    Tropheus Cichlid

    These African cichlids make fascinating pets in the home aquarium but are highly aggressive and territorial. Tropheus are mostly vegetarian and require a daily supply of spirulina flakes and the occasional supplement of meaty foods like mysis and brine shrimp.

    Shell Dwellers

    African cichlids tend to be medium to large freshwater fish, and most species need a medium to large fish tank. Fortunately, there is a group of dwarf cichlid species that can live in tanks as small as 10 gallons!

    Shell Dwelling Cichlid by Cave

    The shell-dwellers are a fascinating group of African cichlids from Lake Tanganyika that live and breed in the empty shells of aquatic snails. These tiny fish vary from just 1.5 to 2.5 inches and can be kept in small colonies in nano aquariums.

    Western Species

    Most of the popular African cichlids hail from the great African Lakes in the east, although there are a few options from West and Central Africa. Popular West African cichlids include the African butterfly cichlid, the jewel cichlid, and the popular kribensis cichlid.

    Top 21 Types of African Cichlids

    Are you ready to meet 21 amazing African Cichlid species? Check out the following important facts for each species before choosing your next fish:

    • Scientific Name
    • Size
    • Minimum Tank Size
    • Lake Type
    • Cichlid Type
    • Color Form
    • Water Temperature
    • pH
    • Hardness requirements
    • Diet

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    • Scientific Name: Buccochromis rhoadesii
    • Size: 16 inches
    • Minimum Tank Size: 100 gallons
    • Lake Type: Lake Malawi
    • Cichlid Type: Large Hap
    • Color Form: Blue and yellow
    • Water Temperature: 74 – 82°F
    • pH: 7.5 – 8.4
    • Hardness requirements: 10 – 20 dKH
    • Diet: Carnivorous, feed meaty foods

    Buccochromis rhoadesii (video source) is a large predatory cichlid that hunts by chasing down smaller fish. These colorful fish are also known as the yellow lepturus cichlid. This is an active species that requires a large aquarium to thrive, although they can be kept with a number of other large haps.

    8. Ngara Flametail

    • Scientific Name: Aulonocara stuartgranti
    • Size: 6 inches
    • Minimum Tank Size: 55 gallons
    • Lake Type: Lake Malawi
    • Cichlid Type: Peacock cichlid
    • Color Form: Blue and yellow
    • Water Temperature: 74 – 82°F
    • pH: 7.5 – 8.4
    • Hardness requirements: 10 – 15 dKH
    • Diet: Omnivorous but requires a meaty diet

    The Maulana bicolor peacock cichlid is another great variety of Grant’s peacock, a widespread cichlid in Lake Malawi. This form comes from the Chitimba Bay area on the northwest coast.

    Male Maulana bicolor peacocks are electric blue with a characteristic yellow/orange stripe just behind the head. The smaller females have dull brown colors and are difficult to distinguish from other female peacocks.

    11. OB Peacock

    • Scientific Name: Aulonocara sp. ‘Lwanda’
    • Size: 6 inches
    • Minimum Tank Size: 75 gallons
    • Lake Type: Lake Malawi
    • Cichlid Type: Peacock
    • Color Form: Blue and orange
    • Water Temperature: 78 – 82°F
    • pH: 7.5 – 8.5
    • Hardness requirements: 10 – 15 dKH
    • Diet: Carnivorous, feed them quality flakes or pellets and live/frozen foods

    The Lwanda peacock cichlid is a deep-bodied species with shapely fins. Males have an interesting mix of colors, combining blue and orange on the body and fins.

    These territorial fish should be kept in a small group consisting of one male and a few females. They are fairly easy to breed but may hybridize with other Aulonocara species.

    15. Dragon Blood Peacock

    The Saulosi cichlid (video source) is known as a dwarf mbuna because they usually grow to just 3.5 inches or so. These fish really draw attention, and males and females add variety with completely different colors! Males are electric blue with dark vertical stripes and females are plain yellow/orange.

    They are true Mbunas, although they are less aggressive than other species from this group. Keep these fish in a rocky aquascape that mimics their natural habitat.

    19. Calvus

    Calvus Fish
    • Scientific Name: Altolamprologus calvus
    • Size: 3-6 inches
    • Minimum Tank Size: 30 gallons
    • Lake Type: Lake Tanganyika
    • Cichlid Type: Predatory rock-dweller
    • Color Form: Black and white
    • Water Temperature: 75 – 80°F
    • pH: 7.5 – 9
    • Hardness requirements: 10 – 20 dKH
    • Diet: Carnivorous. Provide meaty frozen foods

    The calvus cichlid is a unique predatory fish with a strange body shape and dramatic markings. They may not have any bright colors, but their spectacular spots and stripes make them stand out in any aquarium!

    Calvus are predators, with big mouths for swallowing live prey like insects and small fish. They are not aggressive towards similar-sized fish and should not be kept with other boisterous fish like mbunas or tropheus.

    20. Demasoni

    Demasoni Fish
    • Scientific Name: Pseudotropheus demasoni
    • Size: 3 inches
    • Minimum Tank Size: 40 gallons
    • Lake Type: Lake Malawi
    • Cichlid Type: Mbuna
    • Color Form: Blue and black
    • Water Temperature: 75 – 82°F
    • pH: 7.8 – 8.8
    • Hardness requirements: 10 – 15 dKH
    • Diet: Omnivorous. Feed mostly spirulina flake and greens but supplement with live/frozen foods.

    Demasoni cichlids are small but highly aggressive Lake Malawi Cichlids that are not afraid to tackle larger species. They can be kept with other mbunas but it’s best to avoid similar-looking tank mates.

    Both males and females are great-looking fish, and they can be tricky to sex. However, males grow larger than females and are more aggressively territorial.

    21. Duboisi

    Tropheus Cichlid
    • Scientific Name: Tropheus duboisi
    • Size: 4.8 inches
    • Minimum Tank Size: 29 gallons
    • Lake Type: Lake Tanganyika
    • Cichlid Type: Rock dwellers
    • Color Form: Black and white
    • Water Temperature: 73 – 81°F
    • pH: 8 – 9.5
    • Hardness requirements: 10 – 20 dKH
    • Diet: Omnivorous. Feed mostly spirulina flake and greens but supplement with live/frozen foods.

    The duboisi cichlid is also known as the white spotted cichlid because it has white spots on a black body when young. Mature fish fade to a blue-black shade and develop a single white bar on either side of their body.

    These fish are highly aggressive toward their own species but relatively peaceful with other fish. They can be kept as a single specimen or in a large school (15+) in a limited space.

    Mark’s Pick

    For Lake Malawi, the electric blue hap (Sciaenochromis fryeri) is my top pick for a display tank: bold, colorful, and large enough to hold territory without destroying smaller fish. For Tanganyika, Julidochromis transcriptus for personality and breeding activity. For beginners, the yellow lab (Labidochromis caeruleus) is the most forgiving Malawi cichlid you can keep and the right starting point.

    Tank Setup and Care Tips

    African cichlids are hardy and easy to keep if you choose their tank mates correctly and provide them with a healthy natural environment. Let’s run through a few important African cichlid care tips.

    Tank Size

    Most African cichlids need a medium to large aquarium, although some of the dwarf cichlid species like Neolamprologus can be housed in a 10 to 20-gallon tank.

    55 Gallon Aquarium
    55 Gallon Aquarium

    The 55-gallon aquarium is a great budget-friendly larger tank. It often goes on sale at chain pet stores.

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    30 gallons is the minimum for some of the dwarf Mbunas and peacocks, but a 55-gallon tank is the recommended starting point for an African cichlid community.

    Diet

    African cichlids are a diverse group of fish, so a one-size-fits-all approach is not recommended. These fish can be very sensitive to poor nutrition, and easily develop problems like obesity and even dangerous health conditions like Malawi bloat.

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    Ron's Cichlid Food
    Ron's Cichlid Food

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    Most African cichlids can be fed prepared foods like cichlid pellets and spirulina flakes, although a more balanced diet is necessary for long-term health. The mbunas in particular require a low-protein diet consisting of algae and vegetable matter, with the occasional meaty supplement.

    Choosing Tank Mates

    Choosing tank mates for African cichlids can be a daunting task. Often the best results come from intentionally overstocking their tank so there is no room for them to claim any territories.

    Make sure to research compatibility carefully before adding new fish to your tank, and remember that sex ratios can be just as important as a species selection.

    It’s also possible to attempt an all male cichlid tank. For further details on how to attempt this I suggest checking out the this cichlid forum.

    Maintenance

    African Cichlids are pretty messy fish, and a heavily stocked community tank is going to need high filtration and regular maintenance. Over-filtering is the norm with these tanks, and weekly water changes are recommended to manage nitrate levels.

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    Fluval FX Series
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    FAQs

    What Is The Most Common African Cichlid Species?

    Mbuna cichlids are the most popular African cichlid species in the hobby. Red zebra cichlids and yellow labs are some of the most common species in the aquarium trade for their amazing colors and high activity levels.

    What Are The 2 Main Groups Of Cichlids?

    The two main groups of cichlids are the African cichlids and the New World cichlids. Most of the African cichlids come from the great lakes of East Africa, whereas the New World cichlids come from North, Central, and South America.

    How Many Types Of Malawi Species Are There?

    There are a staggering 850 species of Cichlids in Lake Malawi. Of course, not all of these fish are available or even suitable for aquariums, but there is still a multitude of Malawi cichlids available in the aquarium trade.

    What Is The Rarest Species?

    There are a staggering 850 species of Cichlids in Lake Malawi. Of course, not all of these fish are available or even suitable for aquariums, but there is still a multitude of Malawi cichlids available in the aquarium trade.

    What Is The Rarest Species?

    At least 52 cichlid species are classified as endangered and a further 106 as critically endangered. Many species are threatened by overfishing, pollution, and the introduction of non-native fish. The Lake Victoria Cichlids, for example, are under serious threat after the Nile Perch was introduced in the 1950s.

    What Are Some Of The Most Peaceful Species?

    African Cichlids have a reputation for being aggressive fish, so they are hardly ever a safe option for a peaceful community tank. However, there are some species that stand out as more peaceful than the rest.

    Frontosa Cichlids may have an intimidating look, but they are actually gentle giants in an African cichlid aquarium. The kribensis cichlids are one of the few African species that can be kept in a small community tank with other popular freshwater fish species, although they can be aggressive when breeding.

    African Cichlid Groups at a Glance

    GroupOriginpHAggressionMin Tank
    Mbuna (rock cichlids)Lake Malawi7.8–8.5High55 gal (208 L)
    Haplochromines (haps)Lake Malawi7.8–8.5Medium75 gal (284 L)
    Peacock cichlidsLake Malawi7.8–8.5Low-Medium55 gal (208 L)
    JulidochromisLake Tanganyika8.0–9.0Medium40 gal (151 L)
    TropheusLake Tanganyika8.0–9.0Very High75 gal (284 L)
    West African (kribs)Rivers/lakes6.5–7.5Low-Medium30 gal (113 L)

    Common Mistakes to Avoid:

    • Mixing cichlids from different lakes (incompatible water chemistry and behavior)
    • Understocking mbuna (concentrates aggression on individuals)
    • Soft, acidic water (most African cichlids decline slowly in the wrong water chemistry)
    • Adding timid community fish (they will not survive in an African cichlid setup)

    Final Thoughts

    African cichlids are real eye candy for fish lovers. Their bright colors, interesting behaviors, and high activity levels make an African cichlid tank one of the most captivating to keep. Hopefully, you have enjoyed this article and learned more about some of Africa’s most exciting freshwater fish!

    Do you keep African cichlids? Tell us about your favorite species in the comments below!

  • How to Tell If a Goldfish Is Male or Female (5 Reliable Ways)

    How to Tell If a Goldfish Is Male or Female (5 Reliable Ways)

    Telling male from female goldfish is trickier than most people expect. outside of spawning season, even experienced keepers can get it wrong. I get asked about this a lot, especially from people trying to set up a breeding pair or figure out why their fish are suddenly chasing each other around the tank.

    The honest answer is there’s no single foolproof method. You’re looking at a combination of physical cues, and most of them only become obvious when the fish are sexually mature and in breeding condition. Here are the five most reliable signs to look for.

    Key Takeaways

    • Goldfish are relatively easy to breed, but their intense care requirements and large brood sizes should be considered before attempting to do so.
    • Male fish are smaller yet brighter in coloration and may display breeding tubercles. Female goldfish may develop a noticeable vent and grow rounder in body shape but lack tubercles.
    • Goldfish are egg scatterers that will eat their eggs once done with the spawning process. Because of this, they do best when bred in a separate tank with controlled settings.

    Introduction To Goldfish

    Goldfish are not a naturally-occurring fish. Goldfish, scientifically known as Carassius auratus, are largely domesticated forms of crucian carp (Carassius carassius). Over centuries, goldfish have been bred to express the brightest colors and to feature interesting ‘fancy’ body modifications, such as telescope eyes and unique tail fin shape. Each modification is considered a breed of Carassius auratus despite the many differences between each individual.

    In the past, goldfish were bred for luck and fortune. Today, some of the rarest breeds of goldfish can also go for large amounts of money, like the Tosakin breed which can sell for several hundred dollars. However, most hobbyists breed their goldfish for the experience as they are relatively easy to breed. Goldfish populations can easily sustain themselves in outdoor ponds and lakes as long as conditions are met.

    It should be noted that goldfish produce large broods and hobbyists can become overwhelmed with the number of goldfish they end up with. No matter what, never release domesticated, invasive fish into the wild. This can be destructive to the native ecosystem and to the individual fish.

    How To Tell If Goldfish Is Male Or Female

    Whether you intend to breed your fish or not, you should identify the gender of your goldfish. This could potentially stop any unwanted broods as well as give a better idea of your available breeding stock; for example, if you’re trying to breed a certain color or feature, you will need to know what breed the parents need to be in order to achieve those desired effects. We have a video below from ThinFrog for a visual ad.

    Luckily, telling male and female goldfish apart is straightforward as they express sexual dimorphism, or outward differences between the two genders.

    There are several differences between male and female goldfish. These physical and behavioral differences include:

    1. Presence of tubercles. When sexually mature, male goldfish develop small white dots on their gills called breeding tubercles (also known as breeding stars). These are a cluster of small, white dots that rise above the skin of the gill covers; they may also sometimes appear on the pectoral fins. This can immediately be alarming to hobbyists as breeding tubercles are very similar in appearance to parasitic ich.

      However, if the white dots stay isolated to the gill plates and other displayed behaviors align with breeding patterns, then these are most likely breeding tubercles.It is not fully understood why male goldfish develop these breeding tubercles, but it’s strongly believed that they help demonstrate strong genes to prospective females.

      It should be noted that not all males display breeding tubercles, especially young goldfish that are still in their juvenile stage. However, female goldfish will never develop breeding tubercles.
    2. Rich appearance. Like other fish and animals, male goldfish tend to be more flashy than their female counterparts. In general, male goldfish are brighter and more intense in coloration and have longer, more flowy fins. They also have more pointy pectoral fins and anal fins that are closer to the tail fin than female goldfish.
    3. Different body shapes. On top of differences in cosmetic appearance, male and female goldfish have different body shapes that make them pretty easy to tell apart. Again, like other fish, females are much larger, rounder, and plumper than the more compact and streamlined body shape of their male gold fish counterparts.
    4. Different vents. Another way to tell male and female goldfish apart is by looking at their vents, or the fish’s opening to their digestive and reproductive tracts. This difference between male and female fish can only really be seen during the spawning season but is very obvious otherwise.When the female goldfish becomes ready during the spawning season, the fish will have a noticeable, often white, protruding vent near its anal fin. This is in contrast to male goldfish that will have a flat vent shape.
    5. Behavioral differences. Lastly, goldfish gender can be determined by observing behavioral changes during the breeding season; male goldfish are generally more dominant outside of these periods, but this becomes especially noticeable when there is a viable female nearby.When the female goldfish is ready to breed, the male will begin to chase after her. The female is chased while the male goldfish is the chaser.

    Can They Be Both Genders?

    No, goldfish are not hermaphrodites. This means that when they are born, they are born one gender and stay that gender for the entirety of their lives.

    Can They Change Genders?

    No, the gender of your goldfish cannot change. While some tropical fish can change their gender based on changing environmental circumstances, goldfish will stay either male or female for their entire life.

    Introduction To Breeding

    Goldfish are not difficult to breed, but this doesn’t mean they should be bred by anyone. Unfortunately, there is an overflow of goldfish available, namely common goldfish. As a result, they’re sold as feeder fish or as prizes at carnivals. Because of their low expense and ease of breeding, they are usually kept in horrible pet store conditions. Their low cost also fools beginner hobbyists into believing they are easy fish to keep.

    As a responsible breeder, you must be able to safely and confidently rehome potentially hundreds of fish after the mature goldfish pair has spawned. In fact, it isn’t unheard of for goldfish to lay 1,000 eggs at a time. Also, keep in mind that these fish can spawn several times throughout the spawning season.

    Ryukin Goldfish

    Goldfish breeders should be aware of goldfish needs, including some handicaps that come along with owning fancy goldfish breeds. For example, some fancy goldfish struggle to swim due to excess finnage.

    Otherwise, breeding goldfish is straightforward and easy as long as you are able to tell males and females apart.

    Why Are They Chasing Each Other?

    As mentioned before, male goldfish will chase females when they’re ready to spawn. This is considered a dancing behavior that encourages the female to release her eggs. However, this can become overwhelming for the female if the male is especially persistent.

    If your male goldfish is chasing your female goldfish outside of the breeding season, then there could be a problem regarding space, water quality, or compatibility. These fish may need to be separated at this point.

    How Do You Know If Your Fish Is Pregnant?

    Goldfish do not become pregnant. Goldfish are egg scatterers. This means that when ready, the female goldfish will release her eggs into the water column for the male the fertilize them. These are sticky eggs that can get caught on live plants, aquarium equipment, or other spawning aids.

    However, female goldfish tend to become rounder in body shape when they’re full of unfertilized eggs. This can definitely give them the appearance of being pregnant though they’re not actually carrying goldfish fry.

    How Do You Know When They Are Laying Eggs?

    Goldfish eggs are macroscopic and easily seen by the human eye. Eggs that are white or clear in color are unfertilized. Fertilized eggs are light brown or yellow in color. As the fertilized eggs develop, a noticeable dark spot will grow in the center of the egg.

    There are many obvious signs that your male and female goldfish are ready to spawn, including physical and behavioral changes. When ready, you will see the female releasing her eggs.

    How To Breed Them

    The best way to breed goldfish is by setting up a separate breeding tank with the same parameters as the display tank or pond. Keeping the goldfish pair in the same tank as other fish and their eggs/fry greatly decreases the chances of success at raising them until adulthood, as the adults are likely to eat their own babies.

    Aquarium Setup

    In a pond setting, goldfish spawn as soon as temperatures start to rise. Goldfish go into hibernation in the winter and emerge during late spring and early summer for the breeding season. Most goldfish reach sexual maturity around 1 year of age.

    In the aquarium, this change in temperature can be replicated by gradually increasing the water temperature. Depending on the initial temperature of your goldfish tank, you may need to first lower the temperature to replicate winter conditions, though this is not usually necessary.

    Ideally, the starting water temperature should be between 50-54° F. Over the course of a few days, gradually increase the temperature by about 3 degrees per day until the water reads between 68-74° F. These water temperature changes should encourage breeding behavior and eventual spawning.

    Goldfish aren’t overly aggressive fish during the breeding season, but males tend to become overambitious when courting a female. The ideal setup would include several females to one male to avoid over-harassment due to the increased chasing behavior. Many hobbyists are successfully able to breed a solitary pair of goldfish without involving other males or females.

    The breeding aquarium should be empty without substrate or decorations. A strong sponge filter with seeded media should be used to cycle the aquarium. As goldfish are messy fish, they need good filtration while keeping delicate eggs and fry safe. A sponge filter allows for good circulation and filtration while not sucking up the babies.

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    Live plants, like water lettuce (Pistia stratiotes) or Java moss (Vesicularia dubyana), may be used to collect the fertilized eggs. However, goldfish may also see these plants as a snack and make a messy aquarium instead. If you’re looking for a cleaner and more controllable alternative to live plants, then you may use a plastic egg crate or a specific aquarium spawning mat that will catch the eggs and keep them safe.

    Java Moss
    Java Moss

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    Spawning

    Once the water temperature has been adjusted to mimic the breeding season and the tank is made comfortable for both the male and female goldfish, spawning may occur. This is a lengthy process and can take several hours. Remember, it’s possible for goldfish to lay 1,000 eggs at a time!

    The female will begin releasing eggs and the male will follow close behind, releasing milt. This can cause the water to become temporarily cloudy. The eggs are sticky and will adhere to the live plants or other spawning material. Unfertilized eggs will be clear while fertilized eggs will be yellowish-tan.

    Raising The Fry

    Once spawning has finished, both the male and female fish should be removed from the tank to prevent them from eating the eggs.

    Over the course of the next 3 days, the eggs will develop. Dark structures will begin to form in the middle of the egg until the fry is ready to hatch. After that, the fry will survive on their yolks for about another 3 days. During this time, they will stay stuck to the aquarium glass or other surfaces and do not need to be fed during this time.

    Once their yolks have been depleted, they will become free swimming. At this time, they can be fed small foods until ready to accept regular fish food. After a couple of months, they may be released into the main aquarium or pond or given to other goldfish keeper enthusiasts.

    Conclusion

    Breeding goldfish is relatively straightforward, but their potential adult size, large brood size, and space requirements should be considered before starting the process. If you have everything you need to raise hundreds of goldfish, then you will need to be able to tell if your fish is male or female. This can be determined through physical and behavioral changes.

    From there, spawning can take place and the fry can be successfully raised.

    📘 Want to learn more? This article is part of our complete Freshwater Fish Guide. your ultimate resource for freshwater species, care tips, tank setup, and more.

    References

  • Aquascape Ideas: The 5 Main Styles and How to Set Each One Up

    Aquascape Ideas: The 5 Main Styles and How to Set Each One Up

    Aquascaping is one of the more creative sides of this hobby, and something I’ve spent a lot of time experimenting with over the years. My personal approach leans toward the natural planted style. soil capped with gravel or sand, low-tech, letting the plants do the heavy lifting. But there’s a whole spectrum here, from the highly structured Dutch style to wild jungle scapes, and each approach has its own philosophy, equipment requirements, and skill level.

    Whether you’re setting up your first planted tank or trying to give an existing one a real visual identity, understanding the five main styles will help you pick a direction that fits your budget, patience, and goals. Here’s a breakdown of each.

    Key Takeaways

    • Aquascaping is an underwater living art form that creates stunning underwater landscape
    • There are several popular styles that are used in aquascaping with Nature Aquariums being the more predominant
    • They involved aquascaping rocks, driftwood, and aquatic plants
    • They often will require CO2 injection to enhance growth

    How to Get Started?

    If you’re completely new to aquascaping, the very first thing you’ll need to do is decide on what type of critter are you looking to keep, or if this is going to be a one hundred percent horticulturist endeavor?

    And I say critter because with all the options of aquascaping available, it’s possible to keep anything from fish to small shrimp and even frogs. So the more you understand what type of aquatic creatures you’re trying to make happy, the easier it will be to try and replicate their natural habitat, or at least somewhere they’d enjoy living.

    For example, if I wanted to have a beautiful nature aquariums with small freshwater shrimp and a few tetras, I would opt for an Iwagumi style set up. Or for fish like Cichlids, I would use the Biotope Style.

    But if this is simply for your enjoyment and have no plans on keeping any specific aquatic pets, then there’s a whole world for you to consider.

    Understanding what’s going to live in your newly created natural habitat, or not, can help narrow down your focus and shorten the learning curve considerably.

    Considerations

    • What will live in the tank
    • How big is your tank
    • How much are you willing to spend
    • How much time do you have for maintenance
    • Your personal aesthetics

    What’s Next?

    Now that you have an idea of what will live in your freshwater aquarium and a taste of what’s involved, it’s time to see what style you would want to recreate in your own tank.

    This is aquascaping, simply landscaping under water in a confined space. So the best place to see what you might like is to look at some regular landscaping pictures.

    Type in something like ‘beautiful landscapes’ into your search engine and click ‘images’. You’ll be presented with thousands of images, all of them potential aquascapes for you to clone and experiment with.

    CO2 Injected Planted Tank

    Choose a few images that really inspire you, and notice what they all have in common. Are they all sprawling grass fields, or forest covered mountains?

    This is what you feel is beautiful or have some sort of connection with, and it’s also what you should be working towards in your own aquascape ideas. After all, it’s you that needs to see it everyday!

    Once you have an idea of what you connect with, explore the different styles of aquascaping to see which style most resembles your personal choices. It’ll be easier to understand one style’s complexities than trying to learn the whole hobby at one go.

    Just like in ‘real’ landscaping, there are a lot of styles of aquascaping and you just need to figure out which aquascape ideas float your boat.

    Once you narrow your focus on which style resonates with you, then you can go deeper into researching everything that goes into that particular aquascape.

    Here Are A Few Of The Main Aquarium Styles

    Nature Aquarium Styles

    Nature Style Aquarium Example

    Nature aquariums are definitely one of the most popular aquascaping ideas and was originally developed by Takashi Amano from Japan. Takashi took what he knew, and incorporated the lush high mountain peaks of Japan into his art using aquascaping rocks, mosses and other aquatic plants and hardscapes.

    His style is one in tune with nature and wanting to bring the beauty of large landscapes into a small underwater space. Everything is as natural looking as possible and well balanced for a sense of serenity when looking at one of his creations.

    Dutch Aquarium Style

    Originating in the Netherlands, Dutch aquascaping is characterized as vibrant and full of color and variety. This planted aquarium style focuses on aquatic plants rather than other materials.

    Dutch Aquascape

    More of an underwater flower garden, Dutch aquarium aquascapes contain patches of a wide variety of plant species that are arranged neat rows and patterns. The densely planted aquariums are well manicured and are reminiscent of the old traditional gardens of the Netherlands.

    Iwagumi Style

    The Iwagumi aquascape originated with the same man who started the Nature Aquarium style, Takashi Amano. Only this time, he went for a super minimalist appearance creating sprawling low landscapes that bring the eye to a few key focal points, usually strategically placed stones all having their own importance in the overall balance of the Iwagumi aquascape.

    Short aquatic mosses help create a sense of grandeur of the jutting rocks while giving the Iwagumi aquascape a life form all its own.

    Biotope Style

    Biotope aquascapes are great when you have a certain species of aquarium fish you want to keep and pamper as best you can. The aquascapes are literal miniature ecologically correct environments that replicate the fish’s natural habit down to the last detail.

    These can include what you’d naturally find in rivers, swamps, or other aquatic terrains. Done right, your aquarium fish should never realize they are in a fish tank and not in their natural habitat.

    Paludarium Style

    One of the more difficult aquascaping styles to pull off, these aquascaping ideas require three key components; water, land, and a canopy portion. That means your tank will never be completely filled with water which is perfect if you want to keep a small frog or two. You can see a world class Paludarium below from Green Aqua’s YouTube channel.

    They include terrestrial plants and aquatic plants, making them a true biozone. And although they may be a bit more complicated, they do open up the possibilities when it comes to what you can keep in your tanks.

    Setting Up Your Tank

    When it comes to your aquarium, you really want to go with the largest freshwater aquarium you can afford or fit in your space. A twenty gallon fish tank and a few plants is a great start, but a hundred gallons is even better. Only go with small aquariums if you’re working with a really tight budget.

    You’ll also want to use a rimless tank that doesn’t have any braces or other materials that take away from your aquascape. You want a tank that is pure glass and a solid stand.

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    As far as a stand, it’s a good idea to get a cabinet type. You’ll need a few tools and possibly a CO2 tank for your aquascape, and it makes it easier to hide all your equipment so everything looks as clean and professional as possible.

    Personally, I like a very dark colored cabinet stand so when the aquascaping lights are on, you don’t even notice what’s underneath the aquarium.

    Substrates

    Substrates are extremely important in a planted tank due to all of the live plants you’ll be working with. It’s needs to be both fertile enough to sustain your aquatic plants, and hardy enough for the plants to root in and support rooting plant growth.

    If you’re only working with carpeting plants like mosses, then your plant substrate isn’t as important. But even small plants need something to grow in.

    And just like the live plants that grow in your yard, many aquatic plants pull nutrients from the soil using their roots. That means your plant substrate will need to include these nutrients and possibly be easy enough to change or add more when they’re depleted.

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    Walstad Method

    The best method for achieving a well balanced planted tank is the Walstad Method.

    This method of growing aquatic plants in aquascapes is named after the woman named Diana Walstad who literally wrote the book on it, (see: ‘ECOLOGY of the PLANTED AQUARIUM – A Practical Manual and Scientific Treatise for the Home Aquarist’).

    When done correctly, this method provides all the nutrients your aquatic plants will need and you won’t need to change the soil or add any additional nutrients. You can see an example of this setup from Ceyhun Derindere Aquatics’ YouTube Channel.

    This is because the plants will quickly create a chemically balanced biological ecosystem within your tank and break down any fish refuse to be used by your plants as fertilizer.

    Once established, you shouldn’t even need to use a filtration system for your tank as the plant life and biological ecosystem created naturally does all the work for you.

    All you need to do is get some quality potting soil that you can find at any garden center. Just make sure there are no added chemical fertilizers!

    Add at least one inch of the soil in the bottom of your tank. Then add a thin layer of sand, or 2 inches of medium fine gravel so the soil can always breathe. That’s it!

    The only thing you need to be aware of is you must give your fish tank a minimum of two months to stabilize and be ready for your fish.

    Sand and Gravel

    Both sand and gravel make great substrates depending on the aquascaping plants you’re growing. Both come in all sorts of sizes and colors and are easy enough to source.

    Just be sure that your aquatic plants match they type and size you’re looking to use. Tall plants find it hard to root in small particle sized sand whereas mosses will have problems rooting in large gravel substrates.

    And also take your fish into account. Don’t use substrates with sharp edges if you’re going to include catfish or other bottom dwellers.

    Hardscape Materials

    Hardscape materials will either make or break your entire design. Everything about them is important, their size, color, material, everything. After all, these are the focal points of your aquascape and should be added after you’ve finished adding your substrate.

    Rocks

    Although you may think rocks are pretty boring, there are actually a massive amount of different kinds of rocks. And each one you place in your tank will have an effect on the overall experience of your aquascape. So take your time finding that perfect aquascaping rock!

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    Obviously what look you’re going for will determine a lot as far as choosing your rocks. For a Nature Aquascape you’ll usually want dark colored rocks with interesting designs that can look like mountain peaks or far away mountains.

    If you’ll be adding rocks to a Dutch style tank, then you should be looking for colors that play off the types of plants you’ll be using. Or sizes that won’t overpower the rest of the scene.

    Some great rock types to start with are Dragon stone, Lava rock, Ryuoh or Seiryu, Ohko and Elephant Skin rocks are all used in aquascaping.

    Which one you choose to use is going to depend on how you want your finished aquascaping design to look.

    Driftwood

    I absolutely love the look of ragged, aged driftwood in a tank. Driftwood has so much character, and the colors are perfect for a natural tank. But you can use other types of wood like petrified woods,

    Best used in Nature, Biotope and Paludarium Styles of aquascaping, driftwood can be used as a central focal point or for layering to bring depth of field to a scene.

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    Coupled with plants like Java Moss or Anubias Barteri, your wood becomes a living organism that looks amazing with a few freshwater invertebrates grazing on them.

    Filtration

    Great filtration is a must for any aquarium, and even more so when you include soil, wood and plant life into the mix. Rotting plant material decomposes over time and add a lot of different elements to your water that must be filtrated out.

    And that’s not to mention the addition of fish to your tank. Even small fish species produce waste that needs to be filtered out in order to keep your water well balanced.

    The best and most natural way of handling all this when you can is to use the Walstad Method I described above. Then instead of waste, you have fertilizer.

    But if that isn’t possible, then you’ll need to think about the best sort of filtration system yo use for your specific aquascape. Usually, some sort of external hang-on back (HOB) filter or canister filter.

    Canister filters are the best you can get. They can be hidden underneath your tank, and you can use almost any type of filtration medium you can find. They come in all sizes and can handle even the biggest water volume. The only problem is they’re also the most expensive type of filter system.

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    A less expensive type is the HOB filter. These filters simply hang on the back of your tank and are simple in terms of how they’re used. So they can be a solid starting point for a new aquarist.

    But they also have many drawbacks. The first being that they hand on your tank. For aquascaping, this is definitely not ideal. Furthermore these filters can’t hold nearly the amount of filtration media that canisters can, nor are they as quit when running.

    They are also not meant for larger tanks as they aren’t all that powerful.

    So if you have the funds, I highly suggest just going for the canister filtration system.

    Lighting

    Since aquascaping relies heavily on plants to complete their overall scene, having the correct lighting for plants to photosynthesize and fish to thrive is going to matter a lot.

    Unlike other types of aquarium lighting, we are looking for lighting options that are specifically designed for growing aquatic plants. This is one area where the needs of your fish take a back seat.

    In a traditional aquarium set up, fluorescent light bulbs would be fine for most plants and fish. But they aren’t well suited for aquascaping plants and should be your last choice.

    The very best lights for your aquascapes would be bulbs that mimic natural daylight. And they need to be strong enough to reach the depths of your tank while not creating a lot of heat and effecting the water temperature.

    LEDs are the perfect choice for aquascaping. They can do all of that and more. In fact, you can do all sorts of cool things with LED. They can be easily timed when they come on and off.

    Best Value
    Serene RGB Pro LED
    Serene RGB Pro LED

    Current USA’s offering into aquascaping is an incredible value. Spectrum, spread, easy to program and great PAR output.

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    You can dim your lighting, or even dim or brighten certain areas of your tank all with the same light source. You can even add different colors or light spectrums to the mix.

    There really isn’t much you can’t do with LEDs today. And they are much more energy efficient than other types of grow lights. So over time they can end up saving you money.

    Plants

    Obviously, plants are going to play a major role in any aquascape. Your plant choices will ultimately depend on the overall aesthetic you’ve chosen and the type of aquascape style you want to achieve.

    You’ll also need to take into consideration the individual requirements of each plant. It’s best if you have similar species of plants that require the same lighting, temperatures and water hardness so it’s easier to maintain your tank. And slower growing plants will need less pruning.

    There are actually four groups of plants you need to consider when planning your aquascape based on their size and where they will be placed in your setup. The idea is to vary the heights of your plants to give your tank an overall feeling of depth to the scene.

    Background . Background plants will usually be the largest plants in your aquarium. The ones I’ve listed here are the easiest to source and grow to about 12 inches (30 cm) or more. They do come in a variety of leaf shapes and sizes, but the only color variations are greens and reds.

    Midground . Your Midground plants are next. They only grow to a medium height of about six inches tall and should be used somewhere in the middle of your tank in front of your background plants.

    • Java fern
    • Anubias species
    • Cryptocoryne species
    • Alternanthera reineckii
    • Red dwarf Hygrophila
    • Blyxa short leaf. Blyxa novoguineensis
    • Chain Sword
    • Dwarf Cardinal plant. Lobelia cardinalis
    • Downoi. Pogostemon helferi
    • Basil Leaf. Limnophila rugosa
    • Water Hyssop. Bacopa caroliniana

    Foreground . The area closest to you as your viewing your tank, most aquascaped foregrounds will include some of your smallest plants so you have a clear vision of the entire scene.

    Some species are also called carpeting plants, and many types of mosses are incorporated here giving your aquascape a lawn effect, or rolling hills like in the Iwagumi style of aquascaping.

    • Staurogyne repens (S. repens)
    • anubias nana petite
    • dwarf hairgrass (Eleocharis acicularis)
    • Micro sword (Lilaeopsis brasiliensis)
    • dwarf chain sword or pygmy chain sword (Helanthium tenellum)
    • Hydrocotyle tripartite

    Carpeting Plants

    • Dwarf baby tears (Hemianthus callitrichoides ‘Cuba’)
    • Monte carlo (Micranthemum tweediei)
    • Mini pennywort (Hydrocotyle tripartita “Mini”)
    • Creeping Staurogyne (Staurogyne repens)
    • Vietnam Ambulia (Limnophila sp. “Vietnam” )

    Floating – Floating plants are helpful in low to medium light conditions as they can provide cover and can be arranged in ways to shed shade on the areas of your tank that need less light.

    And since these types of plants do not grow in the substrate, they can be added or taken away easily. Plus, the species with roots can add a lot of drama to the overall feel of an aquascape as the plant roots hand down into the scene.

    • Duckweed (Lemna minor)
    • Hornwort (Ceratophyllum demersum)
    • Amazon Frogbit (Limnobium laevigatum)
    • Dwarf Water Lettuce (Pistia stratiotes)
    • Water Spangles (Salvinia minima)
    • Mosquito Fern (Azolla filiculoides)
    • Pennywort (Centella asiatica)

    Fish Species

    Your fish should be the last thing that’s added to your aquarium. Your aquascape will need some time to take hold and after you first finish, you will probably want to make some adjustments which means arranging aquatic plants which your fish won’t take kindly to.

    And it also takes some time for the water to become more stable and establish a healthy ecosystem. This can take as long as two months, so be patient.

    Give your aquascape the chance to cycle through and the plants to take root. then when you introduce your fish, they’ll feel right at home with no disturbances.

    As far as which fish to keep, remember, the aquascape is the focus, not the fish. They are just the decoration. So you want fewer and smaller fish than you would otherwise.

    This also helps to give the aquascape more of a sense of largeness or openness. A big fish would just look really out of place!

    Just try to match your fishes requirements with that of your plants. If all of your plants need strong light or warm water, make sure the plant safe fish you include can tolerate these same conditions.

    Small schooling fish like Neon Tetras are perfect for these types of tanks since they are easy to care for, don’t pull up plants and can live in all types of freshwater aquariums.

    Neon Tetra
    Neon Tetra

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    One of the most popular freshwater community schooling fish available in the aquarium trade. Great neon blue colors!

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    These fish only grow to an inch and a half and are inexpensive and easy to source. There are many different tetras and any of these colorful fish would do well in an aquascaped environment.

    Harlequin Rasboras are another great choice reaching less than an inch and a half full grown, they are easy to source and are very inexpensive. They’re easy to keep, school well in groups and don’t disturb your plants. Overall a great choice.

    Harlequin Rasbora
    Harlequin Rasbora

    A peaceful schooling fish. An ideal community fish. A great beginner fish

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    Celestial Pearl Danios, or Galaxy Rasboras are beautifully colored fish and work well in Natural or Iwagumi tanks where there isn’t much color. These easy to care for fish are still a bit rare and much more expensive than the Tetras or Rasboras, but they are worth the cost.

    Celestial Pearl Danio
    Celestial Pearl Danio

    A great-looking danio fish. Males are more colorful than females. A midway dwelling fish

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    The best part is these fish naturally live in heavily planted ponds and grow to less than two inches, so an aquascaped tank would be the best option to keep these fish healthy and happy.

    The Spotted Blue-eye is another easy choice. Colorful and timid, this fish’s natural habitat is heavily planted shallow pools. They rarely grow to over an inch and a half and add some pizazz to any planted tank.

    The Neon Blue Tux Guppy  (Poecilia reticulata) is another peaceful fish that looks great in aquascapes. You should keep at least six as they like to school, and you can keep up to 20 or 30 if your tank is large enough. This brilliant blue tailed fish grows to be about around 1.5 inches and is easy to manage and find at most fish stores.

    Another fish you should include is a Otocinclus Catfish. These are small busy fish and should be kept in groups of three or more. These guys will help you keep your tank clean by eating most forms of algae which is always a bit of a problem when it comes to heavily planted tanks. If you have a larger aquarium, keep five to ten to help out with your tank maintenance.

    Otocinclus Catfish
    Otocinclus Catfish

    A small algae-eating fish. Also great with freshwater shrimp.

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    Shrimp are another great way to combat algae growth and are very interesting to watch and even breed. Neocaridina Shrimp are probably the best ones to start off with. They are stunningly colored and come in reds, blues, yellows, and greens.

    They’re also easy to find and care for and if your tank is properly maintained, they’ll breed with no problems.

    You can also try Caridina multidentata, or ‘Amano Shrimp‘ respectfully named after Takashi Amano after he made these crustaceans ‘famous’ using them as a way to keep down algae in his creations, especially in his Iwagumi Style aquascapes.

    Best Shrimp For Planted Tanks!
    Amano Shrimp
    Amano Shrimp

    Best For Planted Tanks!

    When it comes to keeping a healthy planted aquarium, Amano Shrimp are the best. These hard-working crustaceans will dutifully wipe your plants and rockwork clean of algae. Their appetite for different types of algae that can’t be matched by other shrimp breeds!

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    These little translucent shrimp will eat almost any type of algae and are cheap and easy to find at most pet shops.

    Maintenance

    Since you’re primarily keeping an underwater garden, it’s smart to focus on your aquatic plants as much as possible since your plants will end up helping you maintain you aquarium once they’re established and happy. Yes, plants can be happy too!

    The perfect aquascape should rely on the miniature ecological environment in the tank to take care of most issues. Your plants should be absorbing the carbon dioxide from your fish, and the fish should be breathing the oxygen from the plants.

    Any fish waste should be fertilizer for the aquatic plants and food for your catfish and shrimp.

    Think of how nature works and that’s what you should be trying to replicate inside your aquarium. The closer you get, the less maintenance you’ll need to do.

    Daily Tasks

    Do daily inspections of your plants, fish and anything living in the tank. notice if your fish are loosing their colors, or seem lethargic.

    See that your plants are steadily growing and there are no brown spots or dying leaves.

    Check for algae growth and ensure your filters and lights are all working correctly.

    Water changes are the most important thing you can do to keep your aquascapes pristine. And it’s far better to do a 10% or 20% daily water change that a 50% change once a week.

    If you’re unable to stick to a regime like this, do the best you can. Even every other day or every two days is better than weekly changes. Just be sure the water you’re adding is close to the same temperature of your tank’s water so as not to shock your pets inside.

    Weekly Tasks

    Clean the aquarium glass inside and outside the aquarium. Even if it looks clean, small algae spores may begin to collect and it’s best to never give them a foot hold on your tank.

    Check your plants and trim any ones that are not growing the way you want. Really look at them and be sure their leaves are clean and smooth and nothing is eating them.

    You may need to vacuum your substrate if possible from time to time. But you need to be very careful as not to bring up any soil under the substrate if you’re using the Walstad method for your aquatic plants.

    Test you water’s pH range and carbon dioxide levels to make sure your plants and fish are happy and safe.

    And if you haven’t done daily water changes, you must do at least weekly changes or you’ll run into problems! If done weekly, you need to do at least a 50% change. Just make sure the water temperature stays stable when making such a large change.

    Wrapping Up!

    Getting started aquascaping is as easy or complex as you want it to be. And the diversity of the hobby is enough for anyone to keep busy for a life time. All you need is a bit of imagination, a few bucks and an aquarium. After that, the rest is up to you.

    🌿 Want to learn more? This article is part of our complete Planted Tank & Aquascaping Guide. your ultimate resource for aquarium plants, aquascaping styles, substrates, and more.

  • How to Lower Nitrates in a Fish Tank: 9 Methods That Actually Work

    How to Lower Nitrates in a Fish Tank: 9 Methods That Actually Work

    Nitrate management is something I think about constantly across my tanks. especially my 125-gallon reef where elevated nitrates directly impact coral health. Over 25 years I’ve tried every method out there, from water changes to refugiums to carbon dosing. Here’s what actually works and what’s most practical for most setups.

    Nitrates don’t kill fish overnight the way nitrites do. and that’s exactly what makes them dangerous. In my 125-gallon reef tank, I learned to respect nitrates the hard way. Coral bleaching, nuisance algae outbreaks, and sluggish fish behavior were all signs I initially attributed to other causes. Once I dialed in my nitrate management through a combination of water changes, refugium macroalgae, and a biopellet reactor, everything improved. In freshwater tanks, the fix is often simpler, but the principle is the same: elevated nitrates stress fish chronically, suppress immune systems, and fuel algae blooms. Here’s what actually works, based on my experience across dozens of setups over 25 years.

    Expert Take (Mark Valderrama, AquariumStoreDepot)

    High nitrates are almost always a symptom of one of three things: overstocking, underfiltering, or infrequent water changes. After 25 years, I’ve seen plenty of people chase nitrates with filter media and additives when the real answer is simpler. A test kit tells you you have high nitrates. The question is why. Fix the root cause first, then maintain with consistent water changes and live plants. Anything else is treating a symptom.

    Key Takeaways

    • Nitrates are the least toxic compared to Ammonia and Nitrite
    • At high levels, nitrate is harmful to your fish
    • Water changes, live plants, and specific media can help lower nitrates

    What Is It?

    Nitrate is a component of the nitrogen cycle and it is formed when bacteria do the conversion of ammonia. The bacteria named, Nitrosomonas1 first convert ammonia into nitrite and then it converts nitrite into nitrate.

    The names, nitrate, and nitrite are similar and beginner aquarists usually confuse them. However, nitrite is very toxic to the fish, while nitrates are less toxic. That’s because most aquarium fish may be poisoned and killed by nitrite concentrations of just 1 part per million, whereas nitrate concentrations can occasionally be 100 times higher. Some people associate high nitrate levels with bothersome algae and Old Tank Syndrome, which causes nitrate levels to rise, pH levels to fall, and any newly introduced fish to be stunned and die despite ammonia and nitrite tests coming back negative.

    The fun part about nitrate is it’s present almost everywhere. You might just be replacing your old tank water with new tap water and there are high chances of nitrate being present. Fortunately, it’s not as deadly as nitrite.

    How To Lower Nitrates In Fish Tank

    Quick Answer

    The fastest method: a 25 to 30 percent partial water change, repeated every 2 to 3 days until nitrates drop below 20 ppm. Long-term solutions include reducing stocking density, increasing water change frequency, adding fast-growing live plants (hornwort, water wisteria, vallisneria), and using nitrate-absorbing filter media like Seachem Purigen. Target: under 20 ppm for freshwater, under 5 ppm for reef tanks.

    One of the easiest ways to lower nitrates in a fish tank is by changing your tank water frequently. The other quick ways include adding live plants, removing filter media, and avoiding overfeeding and overcrowding.

    We have a video from our YouTube Channel for those who want a visual explanation. As always, our blog post goes into more detail. Feel free to look at both. If you like our channel, be such to subscribe as we post new videos every week!

    1. Frequent Water Changes

    Your nitrate level will decrease if you switch to tap water as long as it contains less nitrate than your tank water. Test the nitrate level in both your freshwater tank and your tap to check that this is the case.

    Also, remember to maintain the right temperature of the water you’re replacing and make sure it’s treated for chlorine or chloramine.

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    Seachem Prime
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    Avoid using tap water if the nitrate levels are around 40 ppm or higher. It’s best to use RO water if the nitrate levels are too high in your tap water. The benefit of RO water to your aquarium fish is many as it removes nitrates, phosphates, chlorine, and minerals from tap water. Also, RO water is soft water with low pH, so suits the fish that prefer such water conditions.

    Summary:

    1. Perform water changes frequently.
    2. Vacuum the gravel to remove debris and fish waste
    3. Change your filter pads every once or twice a week to remove uneaten food rots or fish wastes that add to nitrate levels
    4. Make sure to test your tap water for nitrates before introducing it into the tank.

    2. Live Plants

    The old tank syndrome or high nitrate accumulation in your tank is very common. If you have freshwater aquariums, the problem seems quite under control. However, in saltwater tanks, extreme nitrate levels can cause a nuisance. It is said to lower nitrates and keep them below 20 mg/L for a healthy ecosystem.

    To cater to this, a planted aquarium works best to pull nitrates from the water for nutrition. However, there are some plants better than others.

    As plants might really run low on this important nutrient after using it all up, aquascapes actually inject nitrate in the form of nitrogen, or N. Other advantages of live aquatic plants for freshwater aquariums include helping to control algae growth, sheltering young fish and fry, and providing areas for fish to lay their eggs. Just make sure any aquarium with plants has the appropriate lighting and additional fertilizers to keep the plants thriving and healthy.

    Aquarium Plants That Work Best

    Water Sprite

    Water sprite or Indian Water Fern is a good live plant for most community tanks. They are also very useful, low-maintenance, and beautiful plants that keep your aquarium nitrate, ammonia, and nitrite free.

    Water Sprite
    Water Sprite

    Readily available and easy to grow. This fast growing plant will soak up nutrients and thrive in low light

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    The leaves of water sprite are fast growing, so they quickly absorb all harmful toxins and chemicals from the tank water. Hence, they are powerful natural filters for your aquarium. However, they are very fast-growing plants that grow like a weed and may tangle into other plants. So, it’s important to prune them occasionally without harming the leaves.

    Duckweed

    Duckweeds are excellent floating plants that lower nitrates in your tank naturally. In the wild, you will usually find them sitting on top of the surface of many lakes and ponds.

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    Duckweed
    Duckweed

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    In the aquarium hobby, duckweed is known to control nutrients and add aesthetics to the fish tank. However, like water sprite the growth rate of duckweed is very high, leading to uptake nutrients, equipment clogs, and many other problems. Therefore, it’s important to trim the branches occasionally.

    Water Wisteria
    Water Wisteria
    Water Wisteria

    An easy to grow and great beginner floating plant to try!

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    Water wisteria is one of my top picks for nitrate-reducing plants because it is, aesthetically pleasing with its gorgeous palmate leaves. Plus, it’s so easy to grow and low-maintenance. However, always grow this plant in the background as it turns very tall and bushy within no time.

    Frogbit

    If you have a larger aquarium tank, the frogbit plant should be your go-to. Appearance-wise, frogbit is very similar to duckweed and nitrate uptake.

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    Amazon Frogbit

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    However, the leaves are thick and circular in shape.

    Frogbit is very similar to duckweed in appearance and nitrate uptake. Your community fish can thrive and seek shelter in their long roots. But extra maintenance should be done to keep the roots and growth at bay.

    Hornwort

    A common choice for nitrate reduction in aquariums is hornwort. Aquarists wishing to lower nitrate levels in their tanks can use this rapidly growing aquatic plant because of its special capacity to absorb nitrates from the water column.

    Hornwort
    Hornwort

    A tall and easy to grow freshwater plant. One of the least demanding background plants available

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    As hornwort can absorb a lot of nitrates from the water column, it is a fantastic choice for aquariums with high nitrate levels. The plant is a helpful addition to any aquarium since it also lowers ammonia and phosphate levels.

    Hornwort may drastically reduce nitrates in as little as two weeks, but it’s crucial to keep in mind that it should be used in conjunction with nitrate-reducing systems. The aquarium must be regularly checked for nitrate levels in order to remain healthy and free of them.

    Anacharis

    Anacharis not only create nitrate remover but they also recognize to be a fantastic food source for many varieties of freshwater fish, including goldfish, tetras, and guppies. It also makes a terrific plant for breeding tanks because of its long, thin leaves, which offer excellent hiding places for fry.

    Anacharis
    Anacharis

    Excellent as a food source and sucks up nutrients in an aquarium. One of the easiest freshwater plants to care for

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    Water Lettuce

    One other live plant species that may remove nitrates from the tank water is water lettuce. A shallow-water pond’s nitrogen content may be effectively extracted by species like pistia stratiotes to the extent of 83%. You should plant this floating plant if you want both aesthetics and functionality.

    Water Lettuce
    Water Lettuce

    A popular floating plant that is used in ponds and aquariums!

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    3. Nitrate Reducing Media 

    To remove nitrates, nitrate removal filter media is used to lower nitrates in fish tanks. As mentioned earlier, nitrates are the natural by-product of the nitrogen cycle. The process allows beneficial bacteria to convert fish waste and uneaten food into less harmful substances.

    In order to remove nitrates, many aquarists equip the filer with high-performance filter media, such as the Biome Ultimate Filter Media, which is highly porous with a unique structure that absorbs water seamlessly. Filter media works in an exclusive way and supports beneficial bacterial bloom that is good at removing nitrate levels. 

    However, there are a few pointers you have before using nitrate-removing filter media in your tank.

    Filter media type

    It is important to choose the right type of filter media that suits your aquarium size and filtration system. There is a variety of nitrate-removing filter media in the market, including resins, pellets, sponges, sintered glass, etc. Biome Ultimate Filter Media is made of premium quality sintered glass and is ideal for Canister, HOB, and sump filters.

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    Biohome Ultimate Filter Media

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    This is the best media you can buy for your aquarium. It does it all – removes ammonia, nitrite, and nitrates

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    Preparation of filter media

    It is crucial to rinse the media to remove any dust particles and debris. While rinsing the media, always use fresh water and avoid the use of soap or detergents, as they can potentially harm the beneficial bacteria in the media. 

    Placement 

    Whether the media should be placed in the filter compartment or inside the filter bag, place it in the filter and make sure to follow the instructions on the label correctly.

    Keep An Eye On Your Levels

    I recommend using a water testing kit to monitor the nitrate levels in your aquarium. After adding filter media, it should take around 2 weeks to notice a significant decrease in nitrate levels.

    Replace The media

    Over time, media might become dirty and saturated and will need to be routinely changed. For information on when to change the media, consult the manufacturer.

    4. Equipment Methods

    Reverse osmosis, water distillation, and ion exchange methods can remove nitrate levels from water. However, remember that it’s not easy to get rid of nitrate levels through sediment filters, carbon filters, or even traditional ion exchange water softeners. To get rid of nitrates effectively, it’s important to install an anion resin tank. Also, if you want to reduce nitrate levels in your tap water, it’s crucial to install an under-sink RO system. If you have a small fish tank, it’s recommended to use a water distiller to reduce nitrate from the water. 

    Reverse Osmosis Method

    To use the reverse osmosis method, you have to install an RO unit that is specifically designed for aquariums. The RO unit is usually connected to the source of tap water. The water is then transferred through the system which removes toxic nitrate, and other contaminants.

    After the removal of all the nitrate, the pure water is collected in a tank that could later be used for aquarium water changes and regular maintenance by topping off the tank.

    Important

    The reverse osmosis process does not guarantee proper water quality. It is even proven to remove essential nutrients and other beneficial minerals from the water along with nitrate removal. Therefore, it is important to re-mineralize the water to maintain a healthy environment for your fish.

    Also, the RO water system demands regular maintenance to prevent the growth of bacteria and other microorganisms in the fish tank.

    Ion Exchange Method

    Though not commonly used, the ion exchange method effectively removes nitrate from the fish tank. 

    In this method, you pass the water through a resin bed with charged particles; ions. These ions in the resin bed attract the oppositely charged particles in water, including nitrates. Hence, the resin becomes saturated with nitrates and other contaminants. It’s best to regenerate or replace the resin bed to effectively remove nitrates from the water in the future. 

    Water Distillation Method

    If you want to remove nitrate, dissolved solids, minerals, and other toxic substances from water, you should go for the water distillation method.

    In this method, the water is boiled until steam is produced. The steam is later cooled and condensed into liquid form. While the water is boiling, it removes nitrates and other toxic substances. As a result, you get pure distilled water free of nitrates and other dissolved solids.

    5. Algae Turf Scrubber (ATS)

    Caution: If you have a planted aquarium, DON’T try this method!

    The Algae turf scrubber method is ideal for freshwater aquariums or saltwater tanks through a process called biological filtration. 

    In this method, the ATS device used light and nutrient-rich water flow to encourage bacterial growth, which absorbs nutrients, such as nitrates from the fish tank. ultimately removing them from the core.

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    To speed up the process and effectiveness of ATS, it’s crucial to provide adequate lighting and nutrient-rich water flow for smooth algae bloom. It’s also advisable to clean your algae mats and screens to prevent clogging. 

    6. Refugium Sumps (Saltwater)

    Refugium sumps are a natural form of biological filtration that effectively reduces nitrates in the tank. They are ideal for a saltwater tank.

    In an aquarium system, a refugium sump is a separate compartment that is often stocked with living plants, algae, and other microorganisms. Nitrates and other dissolved nutrients are absorbed by living plants and microbes when water passes through the refugium, changing them into less hazardous forms. The primary aquarium is then filled with purified water.

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    You would normally require a sump tank, a water pump, and suitable lighting for the living plants and algae to set up a refugium sump for nitrate removal. To avoid overgrowth and to guarantee adequate nitrogen intake, the living plants and algae in the refugium would need to be routinely clipped and removed.

    7. Live Rock and Porous Rock (Saltwater)

    Live rock and porous rocks are the types of rocks, which are directly harvested from the ocean. These types of rocks have living organic matter such as bacteria, algae, and invertebrates to break down organic waste, such as nitrates. When the water in your aquarium flows through these rocks, the bacteria in them convert nitrates into nitrogen gas, which is less harmful. 

    Real Reef Rock
    Real Reef Rock

    This is the best aquacultured rock you can find in stores and online

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    However, the process of biological filtration through these rocks is slow and may be insufficient, depending on the tank size. To use live rock and porous rock as natural filters, just add the rock to your fish tank and let it establish a biological system. 

    Pros

    1. Source of natural biological filtration
    2. Provide a natural aesthetic to the aquarium
    3. Require little to no maintenance

    Cons

    1. They can be costly
    2. Can be contaminated
    3. Takes time to establish a biological filtration system
    4. May not be effective for heavily planted aquariums or stocked aquarium

    8. Feed Less

    Feeding less is one of the most significant ways to lower nitrates in your tank. Also, it’s important to set a feeding routine for your fish. During the feeding time, make sure to shut off all the filters and pumps. Add a smaller amount of food and let the fish consume it all. Feed your fish for no more than 5 minutes. Otherwise, there will be leftover food trapped in filters, leading to higher nitrate levels.

    Key Takeaways:

    1. Always feed smaller amounts of food because overfeeding can lead to increased nitrate levels
    2. Feed only twice or thrice daily to prevent excess waste 
    3. Use high-quality food with fewer fillers and more nutrients for better digestion

    9. Avoid Overcrowding 

    Any aquarium’s nitrate level should directly correspond to how much ammonia the fish produce. Nitrate production increases with the number of fish present. The more fish you have, the more nitrate they will produce. As a result, tanks are frequently overstocked with too many fish and overfed in tanks with persistent nitrate issues. You may reduce the amount of ammonia, fish waste, and subsequent nitrate created by keeping fewer, smaller fish without overfeeding them.

    To avoid overcrowding your tank, start out with one small fish per 10 gallons of water. Later, add two or three fish weeks apart and test the nitrate levels in your tank. As soon as the nitrate levels start to rise, stop adding fish to your tank.

    FAQs

    What is the fastest way to lower them?

    The fastest and easiest way to lower nitrates in your aquarium is by performing partial water changes by removing a portion of tank water and replacing it with fresh, clean water. 

    How do I lower them in my fish tank naturally?

    Fortunately, we have some excellent natural filters in the form of live plants. Live plants absorb nitrates and other nutrients from the tank and promote a healthy natural ecosystem

    What can I put in my tank to lower them?

    You can put nitrate-removing filter media in your filter to lower nitrates in your tank. Additionally, you can also use live and porous rocks if you have saltwater tanks.

    Why are my levels so high?

    There can be several factors associated with high nitrate levels in your fish tank. They can be:

    Too many fish
    Overfeeding
    Improper filtration
    Dead fish or dead plants (decomposing plant matter)
    Tap water high in nitrates

    How do you fix high levels in a fish tank?

    You can fix and avoid the high nitrate levels in your fish tank by testing the water regularly. Also, regular water changes and maintenance is the key to keeping your tank ammonia and nitrite free.

    Can fish survive high levels?

    Yes, but only for a short period of time. Overexposure to high nitrate levels can result in reduced oxygen levels, increased stress, and health-related problems.

    How long does it take for levels to go down in the aquarium?

    It depends on the nitrate levels, the efficiency of the filter system used, the tank size, the water changes schedule, etc. Generally, you will notice a considerable difference in nitrate levels just after a water change. However, if the levels are too high, it may take multiple water changes to reach a safe level. 

    Final Thoughts

    High levels of nitrates can affect the health of your fish and the overall aquarium ecosystem adversely. Therefore, it is important to monitor the nitrate levels through regular maintenance and water testing. It’s also crucial to add live plants in your aquarium to keep the fish healthy, happy, and thriving. Lastly, make sure to never overfeed your fish and overcrowd your tank as it may cause a nitrate spike, leading to severe stress and other health problems. 

    References

  • 8 Signs a Fish Is Dying (And What to Do Before It’s Too Late)

    8 Signs a Fish Is Dying (And What to Do Before It’s Too Late)

    After 25+ years in this hobby, I’ve lost more fish than I care to admit. and the honest truth is that most of those early losses happened because I didn’t know what to look for. Fish that died slowly almost always showed warning signs first. I just wasn’t trained to recognize them yet.

    Catching these symptoms early is the difference between saving a fish and losing it. Some of the signs below are obvious, but a few are subtle enough that experienced keepers still miss them. Here’s what to watch for. and what to do when you spot it.

    Key Takeaways

    • Losing a fish is hard, but it’s important to know what to do when that time comes.
    • There are many symptoms of a dying fish, including abnormal swimming patterns, differences in physical appearance, and trouble breathing.
    • Sick and dying fish are often the result of incorrect water parameters, extreme water temperature, stress, or injury. However, they may also die from old age.

    Is Your Fish Dying?

    If you ask this question, it’s likely too late to save your fish. A healthy fish is colorful, active, and eager to eat. A dying fish might have some obvious external symptoms like cut-up fins, abrasions, inflamed gills, or other signs of parasites. You can check out our video below on our YouTube channel. Subscribe if you like our content and follow along with our blog below. Our blog is more detailed than our video.

    Some behavioral changes might include erratic swimming around the tank, laying sideways on the substrate, gasping for air at the water’s surface, or scratching against hard surfaces. Sick fish may also lose weight from a poor appetite and turn pale in body color.

    Neolamprologus similis fish

    Many of these symptoms overlap with symptoms regularly displayed due to disease and illness. For example, common parasitic infections, like ich, cause the fish to scratch themselves against surfaces in the aquarium and gasp for air. Even though the fish may show these symptoms and look physically damaged, they can still be saved through relatively straightforward treatment methods.

    How do you know that your fish is past the point of being saved, though?

    This is a hard call to make, but it’s easy to know when your fish is on its final days either due to disease or age. That isn’t to say that you shouldn’t keep trying to save your fish until that day comes, though. But at some point, there is nothing you can do.

    Usually, there will be major changes in behavior and appearance. Some of the more foretelling symptoms of imminent death include:

    • staying out in the open once the fish tank lights have gone out
    • staying hidden in rockwork and decorations during the day
    • pale and tattered appearance
    • getting stuck in intake flows
    • getting picked on by other fish and invertebrates

    How To Tell Your Fish Is Dead

    It can be hard to tell when your fish is dead for certain. When they’re dying, it is common for fish to lay on the substrate motionless. Their breathing can be fast and shallow or slow and deep.

    A dead fish will be completely motionless. They may have stiff fins. They may have sunken-in and cloudy eyes. Their body may have started to deteriorate. If you have invertebrates in the tank, they may have even started to break down the body.

    If you’re unsure about whether or not your fish is dead, try to remove it with a fish net. If your fish is dead, then it will most likely be stiff and won’t put up a fight. If your fish is dying, it may be flexible and try to evade being caught.

    Do Fish Float or Sink When They Die?

    You’ve probably seen the cartoon of the dead fish floating upside with crosses over its eyes. Its tongue might have even been sticking out.

    No, this is not what happens!

    When your fish die, generally, they sink. Oftentimes you’ll turn on your aquarium light to find your sick fish nowhere in sight. Once you start checking between rocks and decorations, you’ll often find the dead fish laying on its side on the substrate. If you have invertebrates in the tank, it’s possible that they will have started to eat the fish.

    It is strongly recommended to remove the dead fish as soon as possible to prevent problems with water quality.

    Signs That A Fish Is Dying, Dead, Or Sick

    So what signs should you look out for in your fish? We’ve listed some of the less common symptoms of a dying, dead, or sick fish, but we haven’t listed the ones you’re most likely to see.

    Remember, these can result from a disease or illness and do not always indicate imminent death.

    Swimming Sideways Or Upside Down

    Swimming sideways or upside down is a very worrying symptom. This behavior can display itself in several ways.

    One, your fish may literally be swimming upside down or sideways. This is usually indicative of poor water quality but is also one of the leading symptoms of both swim bladder disease and fin rot (video source).

    Another way this symptom presents itself is your fish rapidly swimming up and down or side to side across the aquarium. This motion can be so fast that they look like they’re swimming upside down or sideways and can even lead to the fish jumping out of the aquarium.

    White Spots On Body

    A healthy fish has bright colors without any discoloration. A fish with white spots on its body is most likely suffering from parasitic, bacterial, or fungal infections. The leading cause for white spots to appear on a sick fish is ich, also known as white spot disease. However, velvet and various flukes can also present as this symptom.

    Loss Of Appetite

    Loss of appetite is seen in nearly all sick fish. However, as long as your fish eats, there is a good chance of recovery. It’s once your fish stops eating that it becomes difficult to keep them strong and bolster their immune system.

    Siamese Algae Eater

    This symptom can be difficult to treat. Hobbyists recommend soaking food in garlic to entice appetite as well as for garlic’s natural healing properties.

    Gasping For Air On The Water Surface

    Gasping for air is a sure sign your fish tank water is poor quality. This is your fish’s attempt to breathe fresh air and get away from harmful toxins. This could also mean that your fish’s gills are being affected either by parasites or bacterial infections.

    Unless your fish has a labyrinth organ, like betta fish or gourami, then it will not be able to breathe at the surface of the water.

    Betta in Fish Tank

    Swollen Or Distended Belly

    Out of all of these symptoms, a distended belly is probably the easiest to diagnose. A swollen belly can be a sign of constipation, which is easy to fix. It can also be a sign of swim bladder disease or dropsy, which are more challenging to fix but easy to diagnose.

    Gills Stop Moving

    This symptom is often paired with sick fish gasping for air at the water’s surface. The most common reasons your fish’s breathing is affected can be due to parasites and other infections.

    Breathing can also become difficult when exposed to poor water quality or other chemicals and toxins in the water.

    Redness On Body

    Redness, swelling, and inflammation of the body can be primary or secondary symptoms. Primary symptoms can be due to cuts and scrapes that your fish has received. Be mindful that redness can also indicate an infection in these areas.

    Secondary redness could be caused by parasites and related infections as well. Swelling and inflammation could even be a mix of a parasitic infection, your fish trying to scrape the parasites off its body, and infection.

    Why Is Your Fish Dying?

    Now that you can tell that your fish is dying, you need to find out why. Most fish species in the aquarium trade are hardy and can adapt to unfavorable conditions and even survive some diseases without treatment.

    Still, the most common reasons you might be dealing with a dying fish are:

    Also, consider how long you’ve had your fish. Most aquarium fish available at the pet store are at least 6 months to a year old. Tropical fish can live for surprisingly long times, with most species having the potential to live up to a decade. However, if you’ve had your fish a long time and nothing seems to be wrong with it, then your fish might be dying of old age.

    At this point, there’s nothing you can do for your fish but give it the best remaining days of its life.

    Common Causes

    Here are some of the most common reasons why your fish might be sick or dying. Keep in mind that many of these issues overlap with one another, along with the symptoms caused.

    Water Quality Issues

    There are many reasons why an otherwise healthy fish may die from water quality issues. One of the most obvious reasons for sudden fish death is adding a ton of fish to a brand-new, uncycled aquarium. This means that fish create ammonia through waste and respiration, which cannot be processed due to the absence of beneficial bacteria that make water conditions safe. As a result, the fish often succumb to ammonia or nitrite poisoning.

    Nitrogen Cycle

    Unfortunately, many new fish keeper enthusiasts make this mistake as they don’t understand the aquarium needs to go through the nitrogen cycle before adding fish. In some cases, the fish tank is cycled, but too many fish have been added at once, leading to overloading the current population of beneficial bacteria. Other times, a water conditioner isn’t used, leading to death from chlorine and chloramine.

    Even in a mature tank, water quality issues cause dead fish. Ammonia and nitrite poisoning are still very real threats for cycled aquariums if tank maintenance isn’t regular. This is especially true if leftover food and waste are left to rot at the bottom of the aquarium and if the filtration system is insufficient.

    An easy fix to water quality issues is performing a weekly or biweekly 10-25% water change. At the same time, siphon the substrate with an aquarium vacuum to remove any unprocessed waste. Regularly use an aquarium test kit to check water chemistry.

    However, one of the more challenging water parameters to keep in check is pH. This is because pH is a very sensitive parameter due to it being calculated on a logarithmic scale. Sudden changes exceeding more than a daily increase or decrease of .50 can cause a fish’s body to stop functioning correctly. This can lead to a very fast and painful death.

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    Another parameter difficult to gauge is dissolved oxygen. Fish need oxygen to breathe. As they breathe, they also release carbon dioxide into the water. This is why aquarium water surface agitation and overall water circulation are so important.

    Water surface agitation helps facilitate gas exchange, meaning bringing in new oxygen and releasing used carbon dioxide. Water circulation helps carry both oxygen and carbon dioxide throughout the water column to prevent dead zones. If fish cannot breathe, then they can suffocate.

    Water surface agitation and circulation can be increased through the use of an air stone, pumps, increased filtration, or more regular tank maintenance.

    Water Temperature

    If water quality is correct, then you still need to worry about water temperature. Aquarium fish are very adaptable to both higher and lower temperatures, but sudden fluctuations and extreme temperatures can cause your fish to go into shock.

    The reality is that too high of a water temperature can cause your fish to cook, while a low temperature can cause your fish to slip into unconsciousness and eventual death. To prevent this from happening, an aquarium heater should always be used for stability for tropical fish and cold weather environments. As aquarium heaters are very prone to malfunctioning, some fishkeeper hobbyists replace their equipment yearly.

    At the very least, the temperature should be checked once a day.

    Stress

    Even if nothing is outwardly wrong with your fish’s body, it may still succumb to stress. There are many reasons why a fish could become stressed. This could be due to incorrect water parameters, incompatible tank mates, lack of space or hiding spots, or disease and illness.

    Even though fish might not die due to water parameters, they’ll still become stressed when conditions aren’t right or when they’re fluctuating. The effects of consistently low amounts of ammonia or nitrite can start to affect fish long-term, leading to early death.

    Fish compatibility is often an overlooked reason for a stressed fish. However, if your fish feels like it needs to fight for its life every day, then it can become injured or malnourished due to competition. The same is true if keeping a schooling fish that isn’t kept with enough related species.

    Keeping a big fish in a small tank can cause the fish to become stunted. This is a physical stress that can start to affect bodily functions over time. A lack of hiding spots can also make your fish feel like it needs to be in constant flight mode, which can cause stress on the body.

    Lastly, stress from having a disease can exacerbate the symptoms of the illness. This is why it’s strongly recommended to move fish to a quarantine tank that can be fully controlled with minimal lighting and other stressors.

    Injuries

    Just like you, getting injured causes extreme stress on a fish’s body. On top of that, many of the medications used to treat injuries can cause even greater stress. Oftentimes, this stress is less than what would be caused by staying untreated.

    Still, aquarium fish are very resilient and will quickly bounce back from an injury if given proper care. Fish can happily live with one eye if need be!

    Action Steps

    Now that you know why your fish is dying, how can you save them? Like any other aquarium problem, you need to treat the cause at the source. The best ways to give proper treatment to a sick fish are through water changes, medications, and lastly, euthanization.

    Water Changes

    Water changes are one of the best ways to treat water and sick fish. Even if your fish isn’t suffering from poor water quality, introducing new water through water changes can help bolster your fish’s immune system and get them on the right track to recovery.

    As mentioned before, regular tank maintenance should include weekly or biweekly 10-25% water changes. Some medications and disease treatments may require more frequent water changes, like one ich treatment method that requires daily water changes.

    Make sure that the source water being used is high-quality, meaning that there is no ammonia or nitrite with minimal nitrates.

    Medications

    Medications are readily available for almost any parasitic, bacterial, or fungal infection found in the aquarium. Medications are not always necessary for the recovery of the fish but can help aid in extreme cases. A gentle and indirect medication, like aquarium salt, can help make the recovery process smoother.

    Keep in mind that many medications are harsh on your fish’s immune system. If your fish is dying, heavy medications may ultimately cause the death of your fish. That being said, the appropriate treatment for some diseases is only through medication.

    Conclusion

    Sadly, losing fish is part of the hobby. It is pretty easy to tell when a fish is dying or not, but it can be harder to tell if they’re past the point of recovery. A few signs of a sick and dying fish are if they have trouble breathing, erratic movements, pale body color, or loss of appetite. These symptoms can be a result of incorrect water parameters, water temperature, stress, or injuries. Also, keep in mind that fish die of old age, too.

    Luckily, there are many medications available that can treat sick fish. But if you find that your fish is suffering, it may be time to humanely euthanize them.

    🐟 Want to learn more? This article is part of our complete Aquarium Care Guide. your ultimate resource for water chemistry, maintenance, feeding, disease prevention, and everything you need for a healthy tank.

    References

  • Brown Algae in Your Fish Tank: 4 Causes and 9 Ways to Get Rid of It

    Brown Algae in Your Fish Tank: 4 Causes and 9 Ways to Get Rid of It

    Brown algae is one of the first things new tank keepers panic about. and honestly, one of the least serious issues you’ll face. It looks alarming when it starts coating your substrate, glass, and decorations, but what you’re seeing is actually diatoms, not true algae. It’s extremely common in newly set up tanks as they cycle and silicate levels stabilize.

    The good news: in most cases, it resolves on its own as the tank matures. When it doesn’t, there are reliable fixes. Here are the 4 main reasons it shows up and 9 ways to clear it out for good.

    Key Takeaways

    • Brown algae (diatoms) are common in new aquariums and usually disappear on their own
    • If brown algae is a long-term problem, its cause can be managed
    • Brown algae is a common aquarium pest that thrives on high silicates, phosphates, and nitrates
    • Increasing regular tank maintenance is a good way to combat brown algae in many cases

    What Is It?

    Brown algae- also known as silicate algae or diatoms1, are single-celled algae found in fresh and saltwater all over the planet. These tiny algae use light to grow (photosynthesize) and silicate to form a protective ‘glass’ shell. Diatoms are not true brown algae, although they evolved from the same ancestor.

    Aquarists think of diatoms as a pest, but these algae are actually vital for life on earth. Like plants, they are the foundation of the food chain, which supports all living animals. These incredible life forms also provide the oxygen we breathe. In fact, diatoms in the ocean are said to produce more oxygen than all the world’s rainforests!

    So how do you identify brown algae? These algae settle on pretty much all tank surfaces, including rocks, glass, and substrate. They form a thin, rusty brown layer that is soft and easy to remove.

    Is It Bad?

    Diatoms are generally not bad for your aquarium. They often show up in new tanks after a few weeks or months and then disappear on their own. However, a slimy brown layer is not very attractive, so in that sense, they are bad.

    Despite the ‘dirty’ look, diatoms are a great food source for many aquatic animals, including algae-eating fish. Unfortunately, there are some situations where serious brown algae growth can have real negative effects on your aquarium.

    When Are Diatoms Bad?

    Sometimes diatoms do not disappear on their own, and they can be a concern in planted aquariums. Brown algae harm plants by covering their leaves and blocking their access to light.

    When plants are unhealthy, their leaves begin to decay. Decaying leaves break down and release even more phosphates and nitrates into the water, potentially making the problem even worse.

    Let’s take a look at some of the main causes of brown algae in aquariums

    Causes Of Diatoms

    Understanding the cause of any problem in your aquarium is the first step toward finding a solution. So, it’s time for a little detective work! This information is also useful to prevent brown algae in any other aquariums you put together.

    Freshwater Diatoms

    1. New Aquariums

    The most common cause of diatom growth is a water chemistry imbalance in a newly set-up aquarium. This problem usually happens in immature tanks without healthy populations of beneficial bacteria and other microorganisms.

    A covering of brown slime is a big surprise to many new fish keepers, and it’s easy to panic and start looking for complicated and expensive solutions. Rest assured, after a few weeks, other forms of algae will probably outcompete these diatoms, and you may never see them again.

    However, if the brown algae in fish tank water do not disappear on their own, or if you develop this problem in a mature aquarium, you may need to look for other causes.

    2. High Nitrates, Phosphates, and Silicates

    These three compounds are the usual cause of persistent brown algae problems in established aquariums. Let’s take a closer look at each one and how they encourage brown algae growth.

    • Nitrates

    Nitrates are the final product of the nitrogen cycle in an established aquarium. They can also be found in low concentrations in tap water and other water sources. Diatoms thrive in high nitrate environments because they use this compound as an energy source for growth.

    The best way to limit nitrate is to physically remove it from your aquarium by changing the water. However, you can also manage this nitrogen compound by limiting the amount of fish you keep or by growing aquatic plants.

    • Phosphates

    Diatoms and other algae thrive in water with high phosphate. These phosphorous compounds are another product of aquarium waste, like uneaten food and dead plant material.

    A lack of maintenance and overfeeding flake foods are major causes of high phosphate levels in aquarium water.

    • Silicates

    Brown algae (AKA silica algae) thrive in the aquarium water with high silicate levels because they use silicates to grow a protective shell.

    Silicates are salts formed by combining silicon and oxygen. They can come from water sources like tap water and hardscape materials like sand, gravel, and rocks. Silicate concentrations in tap water may vary depending on where you live.

    3. Stagnant Water

    Brown algae attach themselves very weakly or simply settle on surfaces in your aquarium. Stagnant water with no movement allows them to multiply, while flowing water keeps them suspended in the water column where they can be filtered.

    Aquariums should have healthy water flow to keep small waste particles suspended in the water column where your filter can collect them.

    4. Poor Water Quality

    Diatoms and aquarium algae tend to thrive in low water quality with high nutrient levels. Most nutrients come into your aquarium as fish food and never really leave the system.

    Sure, the fish eat the food, but they cannot absorb all of the nutrients, and whatever remains stays behind in the form of fish poop.

    Good quality filtration and beneficial bacteria turn these excess nutrients from highly toxic substances into mildly toxic substances known as nitrate. The most efficient way of removing nitrates is through regular partial water changes and growing live aquarium plants.

    Testing

    So now you know a little more about what diatoms are and what causes them, but how do you know which cause applies to your situation? The simple answer is by testing.

    A standard aquarium test kit measuring ammonia, nitrite, and nitrates is a ‘must-have’ for any fish tank. A silicate test kit is recommended for an older tank with a persistent brown algae problem.

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    When To Test

    An important thing to remember about testing is that water parameters change over time. Testing once a year or once a month will not give you an accurate idea of what’s really going on with your water chemistry.

    Test your water every three days or so in a new aquarium to monitor changes in your water chemistry. You can reduce the frequency to once a week as things stabilize, but I recommend testing before and after water changes to work out a schedule with the right results.

    Once your aquarium is established and stable, you can slow down and test once a month or whenever you notice any potential problems like sick fish, algae growth, or unhealthy plants.

    How to Get Rid of Brown Algae in Fish Tank – 9 Best Ways

    Now that you know a little more about the causes of brown algae problems, let’s go ahead and learn how to get rid of brown algae in your aquarium. We have a video from our YouTube channel that you can also follow along.

    1. Give It Time

    Brown algae are usually a temporary problem, and the best course of action in many cases is to just watch and wait. The diatoms will clear up on their own in time as other algae establish themselves and the nitrogen cycle develops and matures in your tank.

    2. Clean It Up

    If your brown algae problem is not solving itself, or you really can’t stand the sight of it, you can always clean it off manually.

    Diatoms do not attach themselves firmly like some other algae species, so they are pretty easy to remove. Here’s how:

    Cleaning Aquarium Glass

    Let’s face it; no one likes dirty aquarium glass. Removing brown algae from tank walls is easy with an algae scraper or a non-scratch algae pad. Use a plastic scraper or a purpose-made algae pad to avoid scratches if you have an acrylic aquarium.

    Whatever you use to clean your aquarium glass, take care to never get sand or gravel between the glass and the cleaner because that’s how scratches happen.

    Cleaning Aquarium Ornaments

    You can carefully remove aquarium ornaments and clean them in old tank water, ideally when doing a water change. This is not necessary if your brown algae problem has just started in a new tank.

    Cleaning Aquarium Substrate

    Brown algae often settles on the bottom of fish tanks, and this can be pretty unsightly, especially if you have a light-colored substrate. These diatoms can be removed by suction with your gravel vacuum.

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    Cleaning Aquarium Plants

    Cleaning brown algae on aquatic plants is difficult without damaging their leaves. This job is best left to the experts- the algae eaters!

    Keep reading to learn more about aquarium algae eaters later in this article or check out my in-depth guide to the best algae eaters for freshwater tanks.

    Cleaning Fake Plants

    Many aquarium owners prefer to use fake plants to create a more natural appearance, although cleaning them can be a challenge. You can scrub your plastic plants with a soft brush or cloth or dip them in a mild bleach solution (1/10 parts) or hydrogen peroxide.

    3. Change Your Substrate

    Brown algae require silicates to grow, but where do they get this material? While it is possible to reduce your silicate levels through filtration, sometimes you need to go straight to the source. Silicates can come in through your water, but they are also found in most substrates. Play sand, for example, is high in silicates.

    4. Increase Water Flow

    Increasing the water flow in your aquarium can prevent diatoms from settling. You can do this by installing a larger filter or a powerhead. In some cases, just rearranging your hardscape or moving your filter will have a big effect on water circulation.

    Of course, some fish don’t do well in strong water flow so this might not be an option with slow-swimming fish like bettas and fancy goldfish.

    5. Improve Water Quality

    Poor water quality is the cause of so many problems in the aquarium hobby that it’s usually the first place to start when anything goes wrong. But how do you improve water quality?

    Filtration

    All aquariums need adequate filtration to support the nitrogen cycle and remove waste particles from the water. There are many types of aquarium filters on the market, but it’s always a good idea to buy the best quality unit that you can afford.

    Designs like canister filters that provide more space for filter media can support larger beneficial bacteria colonies and ensure better filtration. Still, you can also use more than one filter in your aquarium as long as you do not create too much flow.

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    Aquarium filters are usually rated by the tank size they can be used for, but manufacturers often overestimate this figure.

    Therefore, the filter’s gallon-per-hour rating is far more useful. As a general guideline, choose a filter that can process the total amount of water in your tank 4 to 6 times every hour.

    Adding a protein skimmer to your saltwater aquarium can improve the filtration by removing even more phosphates from the water.

    Maintenance

    The number one cause of poor water quality is a lack of aquarium maintenance. We all dream of an aquarium that takes care of itself, but the truth is that the water quality in our tanks changes in time, and the smaller the tank, the faster this happens.

    Excess nutrients cause water quality issues, and the two most effective ways of reducing these nutrients are to limit the amount that goes in and to remove as much as possible.

    If you have too many fish in your aquarium, you’ll need to feed them a lot, and they will produce a lot of waste. Consider stocking your tank with fewer fish if you want to minimize your maintenance needs.

    Water Changes

    Even with a low-stocking rate, nitrate levels will slowly climb, leading to algae outbreaks and many other issues. Performing more water changes is the simple solution to reducing these excess nutrients.

    But how often should you perform water changes? And how much water should you change each time?

    Nitrates and phosphates build up at different speeds in different tanks, so the only way to answer these questions is to test your water regularly. Nitrate levels of 20 ppm or lower are considered ideal for fish, although you can usually let them rise to double that without problems.

    Put simply, if your aquarium water has a nitrate reading of 30 ppm, a 50 percent water change will bring it down to about 15 ppm. If it takes two weeks to return to 30 ppm, then a 50% water change every two weeks may be necessary.

    6. Grow Plants

    Healthy plants will compete with brown and green algae to suppress their growth. Live plants use light and nutrients to grow, just like brown algae, and we can all agree that aquarium plants look much better than diatoms!

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    However, growing healthy, vigorous plants is not as simple as throwing them into your tank and hoping for the best. Different aquarium plants have different needs, so while some plants will grow like weeds without any care, others will need experience, time, and some extra equipment to flourish.

    Here’s what you need to know about plant care:

    • Aquatic plants need light to grow

    Use purpose-made aquarium lights to provide the right spectrum of light for your plants, and run your lights on a timer for 6 – 8 hours each day to simulate a natural photoperiod (day/night cycle).

    • Plants need nutrients

    You’re probably wondering how adding nutrients could be beneficial when your goal is to reduce nutrients. Well, plants will use nutrients in the water from excess food and fish poop, but they also need other nutrients from fertilizers to perform at their best.

    Remember, healthy growing plants will use up the nutrients in the water column before the brown algae, and basically beat them at their own game.

    • Plants need Carbon Dioxide

    Did you know that plants breathe in carbon dioxide (CO2) and breath out oxygen? Fortunately, CO2 occurs naturally in our aquarium water column. But some plants need increased levels to thrive.

    If your goal is to simply get rid of algae, choose plants that do not need injected CO2 to thrive. If you want a jaw-dropping aquascape full of colorful plants, however, you will want to invest in some extra equipment.

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    • Plants attach themselves in different ways

    Aquarium plants fall into three categories; the fastest and easiest are the floating plants. Species like hornwort will float in the water column, soaking up nutrients and competing with diatoms and other algae types like blue-green algae.

    Epiphytes do not float or drift but rather anchor themselves to solid structures like rocks and driftwood. These plants use their roots to hold on and to capture nutrients from the water column. Epiphytes will compete with brown algae, although they tend to be slower growers than floating plants.

    Rosette plants and rooted stem plants send their roots down into the soil, sand, or gravel to anchor themselves and collect nutrients. Some rooted plants need quality aquarium soil to thrive.

    7. Add Animals That Eat Them

    Growing live plants is an excellent way to combat many algae species in the aquarium, but there’s another way to use aquatic life to your benefit. One of the easiest (and most fun) ways to control brown algae is to add algae eaters!

    Various fish and snail species eat brown algae, and these creatures can be fascinating to keep. While these animals will remove brown algae, they cannot solve the cause of the problem.

    Let’s quickly look at some great species that can help you eliminate brown algae.

    • Otocinclus catfish

    The otocinclus catfish is a small freshwater fish with a big appetite for algae and diatoms. These fish grow to just 2 inches, and they can be kept in tanks as small as 10 gallons.

    • Amano shrimp

    Amano shrimp are another excellent option for diatom control in a freshwater aquarium. These interesting inverts are perfect for planted tanks, but beware, larger fish will eat them.

    Best Shrimp For Planted Tanks!
    Amano Shrimp
    Amano Shrimp

    Best For Planted Tanks!

    When it comes to keeping a healthy planted aquarium, Amano Shrimp are the best. These hard-working crustaceans will dutifully wipe your plants and rockwork clean of algae. Their appetite for different types of algae that can’t be matched by other shrimp breeds!

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    • Nerite snails

    Nerite snails are hard-working creatures that love to eat diatoms. There are a few different species available, and most have awesome shell patterns or shapes.

    Some aquarium snails tend to breed out of control, but not the mighty nerite. These snails cannot breed in freshwater.

    • Plecostomus

    Plecos are armored catfish from South America that love to snack on brown algae. There are many species of plecostomus catfish, ranging from the strange bristle nose pleco at 4 to 5 inches to the common pleco that can reach 20 inches. Naturally, choosing the right species for your tank size is pretty important!

    • Lawnmower blenny

    So far we’ve only focused on freshwater species that eat brown algae, but there are many great options for marine aquariums too!

    The lawnmower blenny is a great little reef fish that grows to just a few inches and is suitable for reef tanks of 30 gallons or more. These expertly camouflaged bottom dwellers may take up to 3,000 bites each day, so they’re great for removing brown algae.

    • Trochus snails

    Trochus snails are another excellent option for marine tanks. These conical gastropods come in many patterns and colors, and the various species range from 1 to more than 3 inches across. Trochus snails are easy to care for, easy to breed, and they eat diatoms and blue-green algae.

    8. Try Phosphate Removers

    It is possible to control diatoms by reducing the amount of silicates in the water. Products like Phos-Zorb from API and Phosguard from Seachem remove both silicates and phosphates from the water to suppress brown algae growth.

    9. Use Reverse Osmosis Water

    If your tap or well water is very high in silicates, your best option might be to use reverse osmosis (RO) water or RODI water in your aquarium. Reverse osmosis water is pure water that has all contaminants and minerals removed through a filtration process.

    However, it is important to note that RODI water for freshwater fish is completely pure and unsafe for fish unless it has been remineralized. Another option is to simply ‘cut’ or mix your tap water with RO water to reduce the silicate levels.

    My Pick
    Seachem Equilibrium
    Seachem Equilibrium

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    FAQs

    Why am I getting this in my Aquarium?

    The most common causes of brown algae in fish tank water are an imbalance of nutrients in a new tank, excess silicates, and excess nutrients like nitrates and phosphates. This kind of algae is very common in new aquariums and usually disappears after a few weeks.

    What eats it in an aquarium?

    Many aquarium algae eaters will happily feed on brown algae in fish tanks. Otos, plecos, and nerite snails are all great options for freshwater tanks. Saltwater clean-up crew like lawnmower blennies, trochus snails, and cerith snails are perfect for reef tanks.

    Is it okay to have it in an aquarium?

    Brown algae is usually harmless, except for extreme cases. A little brown algae in a new aquarium is perfectly normal, but abundant diatom growth in established tanks is a sign of nutrient imbalances or other problems.

    Does having it mean my aquarium is cycled?

    Brown algae is a sign that your tank is going through the cycling process rather than proof that cycling is complete. The best way to know if a new aquarium is cycled is to test the water parameters. A cycled aquarium will read zero ammonia and zero nitrites but show detectable nitrates.

    What causes it to grow in a freshwater aquarium?

    Brown algae loves fish tanks with high nitrate, phosphate, and silicate levels. Nitrates and phosphates increase as uneaten food and fish waste accumulate in your tank, and silicates usually occur in varying levels in well and tap water.

    What kills it in Aquariums?

    The best way to stop brown algae is to starve it by making your aquatic environment unsuitable for its needs. Simply killing the algae will not remove the cause of the problem, so avoid using any harsh chemical treatments.

    Final Thoughts

    Brown algae in fish tanks is something that most fish keepers will need to deal with from time to time. If you have a brown algae outbreak in a new aquarium, keep calm and allow it to work itself out. If your problem is in an established tank, run through the causes and solutions explained in this article for the best chance at removing brown algae for good!

    Have you gotten rid of brown algae in your tank? Tell us about your experiences in the comments below!

    🌿 Want to learn more? This article is part of our complete Planted Tank & Aquascaping Guide. your ultimate resource for aquarium plants, aquascaping styles, substrates, and more.

    🐟 Want to learn more? This article is part of our complete Aquarium Care Guide. your ultimate resource for water chemistry, maintenance, feeding, disease prevention, and everything you need for a healthy tank.

    References

  • Red Devil Cichlid Care Guide: What You Need to Know Before You Buy

    Red Devil Cichlid Care Guide: What You Need to Know Before You Buy

    Red devil cichlids earn their name. They’re large, bold, and genuinely aggressive. And in 25+ years I’ve seen plenty of them rehomed by people who underestimated just how much personality (and destruction) one fish can bring to a tank. That’s not a knock against the species. It just means they’re a commitment, not an afterthought.

    The fish that needs its own tank, its own filter, and its own insurance policy.

    The Red Devil does not share. It does not compromise. It owns the tank, and everything in it is either food or a target.

    What Most Care Guides Get Wrong About Red Devil Cichlid

    The most common misconception about red devil cichlids is confusing them with Midas cichlids (Amphilophus citrinellus). Most fish sold as “red devils” in stores are actually Midas cichlids or hybrids between the two species. True red devils (Amphilophus labiatus) have noticeably thicker lips and a slightly different body shape. This matters because their temperaments differ. True red devils are even more aggressive than Midas cichlids, which is saying something. The other myth is that their aggression is managed by adding more fish. Unlike mbuna where overstocking can spread aggression, adding more fish to a red devil tank just gives them more targets.

    Table of Contents

    Red devil cichlids are among the most aggressive freshwater fish in the hobby. They will kill tank mates, bite your hand during maintenance, and rearrange everything in the tank on a daily basis. This fish does not coexist with anything. I have seen red devils crack heater guards and move rocks that weigh more than they do. If you want a pet with personality, this delivers. If you want a peaceful tank, look elsewhere. The fish that bites back and means it.

    The Reality of Keeping Red Devil Cichlid

    There is no sugarcoating this. Red Devils are demanding, aggressive, and destructive. Here is what owning one actually looks like.

    They destroy everything. Heaters, thermometers, decorations, plants. If a Red Devil can move it, it will. If it cannot move it, it will try. Use external heaters, protected equipment, and heavy rocks that cannot be displaced.

    Tank mates are not an option. Most Red Devils end up as solo fish because they attack and kill everything else in the tank. Some keepers have success with similarly-sized aggressive cichlids in very large tanks (150+ gallons), but this is the exception, not the rule.

    They bite. Red Devils will bite your hand during water changes and maintenance. This is not playful nipping. They have strong jaws and it hurts. Use caution or tools during tank maintenance.

    They need massive filtration. A 12 inch Red Devil produces an enormous amount of waste. You need canister filtration rated for at least double your tank size, and water changes of 30 to 50 percent weekly are mandatory, not optional.

    Biggest Mistake New Red Devil Cichlid Owners Make

    Buying one as a juvenile and thinking you can keep it with other fish. That cute 3 inch baby will be an 12 inch tank terror within a year, and by then your other fish are already dead or traumatized.

    Expert Take

    If you want a Red Devil, plan for a 75 gallon species-only tank from day one. Invest in a canister filter rated for twice the tank volume. Accept that this is a solo pet fish with a personality closer to a dog than a typical aquarium fish. If that sounds like your kind of challenge, a Red Devil will not disappoint.

    Key Takeaways

    • The red devil cichlid is a large, aggressive freshwater fish that needs a large tank
    • They grow over 12 inches with males being larger
    • They make wonderful pets for experienced fish keepers, but they are known to attack other fish and even bite human hands
    • It is easiest to keep the red devil cichlid in its own tank without other fish

    Fish Species Overview

    Scientific NameAmphilophus labiatus
    Common NamesRed devil cichlid
    FamilyCichlidae
    OriginNicaragua, Central America
    DietOmnivore
    Care LevelModerate
    ActivityHigh
    Lifespan10 to 12 years
    TemperamentAggressive
    Tank LevelAll levels
    Minimum Tank Size75 gallons
    Temperature Range70 – 78 °F
    Water Hardness6 – 25 dGH
    pH Range6.0 – 8.0
    Filtration/Water FlowModerate to high
    Water TypeFreshwater
    BreedingEgg Layer
    Difficulty to BreedModerate
    CompatibilityLimited, Species-only tank
    OK, for Planted Tanks?No

    Classification

    Taxonomic RankClassification
    Common NameRed Devil Cichlid
    Scientific NameAmphilophus labiatus
    OrderCichliformes
    FamilyCichlidae
    GenusAmphilophus
    SpeciesA. Labiatus

    Origins

    The red devil cichlid is native to Lake Managua and Lake Nicaragua, two large freshwater lakes in the Central American country of Nicaragua. These Nicaraguan lakes provide naturally warm waters throughout the year.

    These feisty fish have been introduced to a few places in the world, and wild populations exist in Florida and Hawaii today.

    Appearance

    The red devil cichlid is a large, attractive freshwater fish that comes in a range of colors. Wild fish are often gray or dark brown but specimens in the aquarium trade stand out with white, yellow, orange, and even bright red shades.

    Red-Devil-Cichlid-Amphilophus-labiatus

    They may be a single color or a combination, with many fish having attractive spots and patterns. Many specimens change color as they mature, so a full-grown adult may look quite different from when you first bought it.

    Male red devil fish are larger than females and develop a pronounced bump (nuchal hump) above their heads. Red devils are characterized by their large, thick lips, although this feature is much more pronounced in wild-caught fish.

    Red devil cichlids have large dorsal and anal fins that end in a sharp point, sometimes extending to the end of their fan-shaped tails.

    The red devil cichlid is easily confused with another popular Central American species known as the Midas Cichlid (Amphilophus citrinellus). However, the red devil grows larger and have thicker lips.

    How Big Can They Get?

    The red devil cichlid is a large, heavily built fish. Adults can measure 12 to 15 inches when fully grown, and males are the larger sex.

    Red devil cichlids are often sold at just an inch or two, but they grow to reach adult size in just three years or so.

    How Long Do They Live?

    The red devil cichlid can live for over ten years with good care. Their average lifespan is about 10 to 12 years, making them a similar commitment to the average dog.

    These fish will live longest if given plenty of tank space, high water quality, and a healthy, balanced diet.

    What Do They Eat?

    Feeding your red devil cichlid is one of the easiest aspects of its care. These true omnivores eat insect larvae, snails, small fish, and plant material in nature.

    Captive specimens are not fussy, and high-quality cichlid pellets are the best option for their daily needs, although young red devil cichlids will eagerly accept tropical fish flakes.

    Great Balanced Food
    Ron's Cichlid Food
    Ron's Cichlid Food

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    Supplement the red devil cichlid diet with the following foods to improve their general condition:

    Live Foods

    Live foods provide a great natural source of nutrition for your red devil cichlid. These fish regularly hunt live prey in nature, so they certainly have that killer instinct. Live foods like earthworms, crickets, and cockroaches are great choices.

    How Often and How Much to Feed them

    Feed your red devil cichlid at least twice each day, providing only as much food as your fish will eat. Remove any uneaten food before it spoils in your tank water.

    Red devil cichlids is excitable around mealtimes, and they will often crash into the hood of your aquarium when taking food from the surface. Make sure your lid is securely fitted and solidly built.

    Weigh down lightweight hoods to keep them securely in place, and take care when feeding these fish, as an accidental bite is pretty painful.

    Temperament and Behavior

    The red devil cichlid is an aggressive fish, and they aren’t called devils for nothing! However, these colorful cichlids make wonderful pets that love to interact with their owners.

    Nevertheless, many specimens will bite the hand that feeds them, and larger fish can easily draw blood. In extreme cases, you need to use a divider to keep your fish to one side when performing tank maintenance.

    Red devils are not fish you can add to a community aquarium. These guys need careful planning and a tank that is designed around their needs. However, it is possible to keep them with some other fish types.

    Continue reading to learn about the best red devil cichlid tank mates.

    Red Devil Cichlid Tank Mates

    Choosing tank mates for your red devil cichlid is challenging because these fish are just so aggressive. It is best to keep them in a species-only tank because they have such great personalities that you don’t need any others.

    Nevertheless, multi-fish tanks are possible, but you should always have a plan B in case things don’t work out. Keeping your red devil cichlid with other fish will require an enormous aquarium, so consider the size and weight of a 180 + gallon aquarium before committing to this kind of setup.

    Best Tank Mates For Them

    It is possible to keep these fish with other red devil cichlids when they are young, but they will become increasingly aggressive as they mature. Introducing all the tank mates when they are young is the best chance of creating a harmonious fish tank, but there are no guarantees when it comes to the red devil.

    Common Pleco in Aquarium

    Some freshwater fish have lived side by side with the red devil cichlid. Plecos are one of them, although these bottom feeders will become strictly nocturnal to stay out of the red devil’s way.

    Other possible options are large cichlids like Jack Dempseys, Texas, Midas, and jaguar cichlids, but again, having a spare tank is important if things go wrong.

    Least Compatible Fish For Them

    Most fish will not get along with the red devil cichlid. Smaller fish may be eaten, while others may be attacked and killed.

    Red devil cichlids become particularly aggressive when breeding. They will kill any other fish in their tank during this time.

    Care

    Red devil cichlids are not ideal for beginner aquarists. That being said, their care is relatively straightforward for more experienced fishkeepers, especially if you start out with the right tank setup.

    Read on to learn more about red devil cichlid care, their tank size, and setup needs.

    Tank Requirements

    The red devil cichlid needs a large aquarium with stable decorations, a secure hood, and a fine sand substrate. Keep reading for more information.

    Tank Size

    Red devil cichlids are large fish that need plenty of room. You can start out with a 55-gallon tank, but a 75-gallon setup will be best for a single fish in the long run. You could also keep a pair in this size tank, but stepping up to a larger size is a better bet.

    Setup

    Keeping red devil cichlids is all about the fish, so don’t design a complicated aquascape. These fish rearrange their tank regularly, so choosing the right decor is very important.

    Decor

    Providing a cave or shelter is a great way to ensure your fish has a place to relax and feel secure. However, safety is a very important consideration when choosing decorations for red devil cichlids.

    These fish love to dig, and they can destabilize rock piles and driftwood arrangements, causing them to collapse. This will cause injury to your fish or even crack your aquarium!

    Avoid placing decorations on top of deep sand. If you don’t want to make a rock arrangement for your fish, secure each component with an aquarium and fish-safe epoxy.

    Substrate

    A fine sand substrate is ideal because it will allow your fish to dig without scratching or injuring themselves.

    Live Plants

    Red devil cichlids are not recommended for a planted aquarium because they are notorious for tearing up all sorts of aquatic plants.

    Water Quality And Filtration

    Maintaining high water quality is essential in any aquarium; your red devil tank is no exception.

    Filtration & Aeration

    Powerful filtration is vital when keeping these large and messy fish. Red devils is hard on aquarium equipment like filters and heaters, so external hardware is often the best choice. Canister filters with integrated heaters (or you can get an in-line heater) are a great option because they limit the amount of hardware that your red devil cichlid can reach.

    Great For Large Tanks
    Fluval FX Series
    Fluval FX Series

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    A sump system is recommended for larger tanks. Larger hang-on back and internal power filters do not have enough to capacity to house adult cichlids. Their activity will also damage internal filters and sponge filters.

    Red devil cichlids are native to stillwater environments, so aim for moderate water movement to avoid stressing your fish. Although it’s not essential, an airstone or two will increase aeration in your red devil cichlid tank and increase the activity levels of your fish.

    Water Parameters

    Red devil cichlids is kept in water with a pH of 6 to 8, although right around neutral is preferred. Ideal temperatures range from about 70 to 78 degrees Fahrenheit, and they will thrive in water hardness of 6 to 25 dGH.

    Aquarium Maintenance

    Regular aquarium maintenance is essential for keeping your red devil cichlid tank looking great and keeping your fish in excellent health.

    Perform a 25-30% water change on your aquarium each week to reduce the build-up of nitrates in your water. This is also a great time to clean up your glass, vacuum up waste from the substrate, and perform any maintenance on your equipment.

    Testing Tank Conditions

    The only way to really know what’s going on in your water chemistry is to test regularly. Red devil cichlids can survive in a reasonable range of water parameters, but you should strive to maintain stable conditions in your tank.

    Editor’s Choice – Freshwater
    API Freshwater Master Test Kit
    API Freshwater Master Test Kit

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    Pick up a test kit that can monitor the following important parameters:

    Breeding

    Breeding red devil cichlids is easy – just make sure you’ll be able to find homes for all the young freshwater fish before you start!

    Sexing

    The first step toward breeding red devil cichlids is to acquire a breeding pair. Fortunately, adult red devil cichlids are easy to sex. The male red devil cichlid is bigger (up to 15 inches) and has a bigger nuchal hump. Females max out at about 10 inches and have a lighter build and a flatter forehead.

    Red-Devil-Cichlid-As-An Adult

    However, forming a pair is easier said than done since males can kill females if they don’t hit it off. Growing out a few young red devils in a large tank and allowing a pair to form naturally is one safe technique, but the other fish will need to be removed for their safety.

    These fish can reach spawning age when they are about 6 inches long if healthy and well-conditioned.

    Conditioning

    Your fish should be in excellent condition before starting your breeding project. Pay extra attention to their water quality through frequent maintenance and provide plenty of live and frozen foods.

    Raising the tank temperature to 75 – 78 degrees, Fahrenheit can trigger spawning since this replicates the natural temperature increase in their breeding season.

    The Breeding Process

    Red devil cichlids spawn on hard, level surfaces like a flat rock, or the walls or ceiling of a cave. The female will lay hundreds of eggs which the male then fertilizes.

    The fertilized eggs will begin to hatch after about three days and will be closely guarded by the adult fish. After hatching, the young fry will be moved to a hole in the substrate and become free swimming within another week or so.

    Males becomes aggressive toward female red devil cichlids at this point, so make sure you include a few secure hiding places and caves that are too small to fit the male. A divider is necessary.

    Caring for Fry

    Red devils are large fish, and you can expect a lot of babies after a successful spawn. Be prepared to see 300 to 800 red devil cichlid fry! The fry gets all the nutrients they need from their yolk sac, but they will require food after their fourth or fifth day.

    Baby brine shrimp and crushed flakes are great starter foods for these fish. You can feed the fry directly using a turkey baster or a large syringe with some airline tubing.

    The adult fish (video source) are very protective over their fry, although you can move the baby fish to their own tank to avoid any chance of them being eaten by their parents. Move the female to her own tank, if you choose to separate the fry as this can trigger extra aggression from the male.

    Health And Disease

    Red devil cichlids are not particularly prone to health problems, and they are relatively trouble-free if maintained in good conditions. Like any fish species, they are most likely to develop problems when stressed by poor water quality, inappropriate food, or conflict with other fish.

    Evaluating their Health

    The best way to monitor your fish’s health is to observe their physical appearance and behavior. Make the time to watch your fish for a few minutes in the morning and evening each day, and pay attention to any noticeable changes.

    Healthy fish have vibrant colors, complete fins that are not held clamped against the body, and a healthy appearance without sores or wounds.

    Buoyancy issues like floating or sinking are something to watch out for, as well as low activity levels and a lack of appetite.

    Common Health Issues

    Red devil cichlids can contract various illnesses that commonly affect freshwater fish species. Consult your veterinarian for more information on treating illnesses in your fish.

    • Ich

    Ich or white spot disease is one of the most common illnesses that affect freshwater fish, and it is serious if left untreated. This parasitic infection is caused by protozoa and often flares up in stressed fish.

    Ich is treated with aquarium salt, heat treatments, or specially formulated medications like ich-X.

    • Fungal infections

    Fungal infections can cause fluffy growths on your fish’s skin, gills, and fins. This form of illness often arises from poor water conditions, so a targeted treatment with antifungal medication and better aquarium hygiene are recommended for the best results.

    • Physical injuries from fighting

    Red devil cichlids have an aggressive nature, and they are often kept with other aggressive freshwater fish. Fights happen, and these powerful cichlids can easily damage each other with their powerful jaws and sharp teeth.

    It’s very important to have a spare fish tank available if you keep red devil cichlids with other fish, even of the same species. Separate your fish immediately if you see signs of serious aggression and treat their wounds when necessary.

    • Bacterial infections

    Fish are susceptible to many bacterial infections, particularly when injured or kept in poor water quality conditions. These infections is treated with antibiotics, available online, from aquarium stores, or from your local veterinarian.

    Where To Buy

    Red devil cichlids are very affordable if bought young. You can find these aggressive cichlid species online or at many aquarium stores. Unfortunately, red devils often hybridize with other cichlid species like Midas and Texas, so buy from a reputable breeder to be sure your fish are purebred.

    FAQs

    Do They Eat Fish?

    Red devil cichlids are omnivorous fish with large mouths and they will eat any fish small enough to swallow. However, avoid providing feeder fish as this can introduce infectious diseases to your tank.

    How Can You Tell If They Are Male Or Female?

    Young red devil cichlids are very difficult to sex, although older fish develop distinct physical differences as they mature. An adult male will grow larger and develop a more prominent nuchal hump above his head than a female red devil.

    What Do They Eat?

    Red devil cichlids will eat just about anything you give them. A balanced diet of quality cichlid pellets supplemented with live/frozen foods and vegetables will keep your red devil cichlid healthy.

    What Is The Difference Between This Fish And Midas Cichlid?

    The red devil cichlid is easily confused with the Midas cichlid. Both fish come from the same family and genus, and they will readily interbreed to produce hybrids. Younger red devils look very similar, but adults grow longer, have thicker lips, and have a longer sloped forehead than Midas cichlids.

    How Fast Do They Grow?

    Red devil cichlid fry grow quickly and begin to change color by the time they reach about two inches long. They may reach 8 to 10 inches within a year if well-fed and cared for, but their growth rate slows after that.

    How long does it take for them to reach full size?

    Red devil cichlids take about three years to reach their adult size. However, they can live for over ten years and will continue to grow slowly throughout their lives.

    Is the Red Devil Cichlid Right for You?

    Before you commit to this species, here’s an honest assessment of whether it fits your setup and experience level.

    • Only for experienced keepers who understand extreme aggression. This is not a fish for beginners or anyone who hasn’t managed aggressive cichlids before.
    • Need 75 gallons minimum for a single fish. A pair requires 125+ gallons, and even then, the female need to be separated during non-breeding periods.
    • Incredible personality and intelligence. Red devils are among the most interactive freshwater fish and develop strong bonds with their owners.
    • Best kept as a solo species. Tank mates are possible but risky. Even large, tough fish can be injured or killed.
    • Will rearrange everything. Decorations, substrate, heaters, filter intakes. Nothing is safe from a determined red devil.
    • Long-lived commitment. Healthy red devils can live 12-15 years, so be ready for the long haul.

    What It Is Actually Like Living With Red Devil Cichlid

    This is the part no other care guide gives you. Forget water parameters for a minute. Here is what it is actually like to share your tank with this species.

    They have enormous personality. Red Devils are among the most interactive freshwater fish. They recognize their owner, beg for food, and will display for you constantly. Some keepers describe them as underwater dogs.

    Feeding time is an event. A hungry Red Devil does not wait politely. It splashes, rams the glass, and makes itself impossible to ignore. Feeding this fish is entertaining and occasionally wet.

    They rearrange the entire tank. Gravel mountains, dug-out caves, displaced decorations. Your aquascape is a suggestion, not a reality, when a Red Devil lives there.

    Aggression is constant, not occasional. This is not a fish that gets aggressive during breeding and calms down afterward. Red Devils are aggressive all the time. Every day. That is their baseline personality.

    How the Red Devil Cichlid Compares to Similar Species

    Red devils are constantly compared to flowerhorns, partly because they’re one of the parent species used in flowerhorn creation. In terms of aggression, they’re roughly equal. Both are among the most aggressive freshwater aquarium fish. Flowerhorns are flashier with their pronounced nuchal hump and iridescent coloring, while red devils have a more natural, wild-caught aesthetic. Red devils is successfully bred in captivity as a pure species, which is something flowerhorns can’t match. If you value authenticity and want to work with a real species, the red devil is the choice. If you want maximum visual drama, the flowerhorn edges ahead.

    The Jack Dempsey is another large Central American cichlid that gets compared to red devils, but they’re in different leagues of aggression. Jack Dempseys are assertive but manageable in a well-planned community tank. Red devils will dominate and potentially injure any tank mate regardless of size. If you like the idea of a big, tough Central American cichlid but want more flexibility with tank mates, the Jack Dempsey is the safer choice.

    Final Thoughts

    A red devil does not share territory. It eliminates competition.

    The red devil cichlid is not for everyone. However, If you want a feisty, aggressive, and exciting pet that loves to interact, it is the perfect option for you! Just make sure you read through this guide carefully before adopting one of these amazing cichlids from Central America.

    Do you keep red devil cichlids? Tell us about your experiences in the comments below!

  • Hatchetfish Care Guide: The Surface-Dwelling Jumpers That Fill Your Tank’s Top Level

    Hatchetfish Care Guide: The Surface-Dwelling Jumpers That Fill Your Tank’s Top Level

    Table of Contents

    Hatchetfish are the only freshwater fish that can genuinely fly. They launch themselves out of the water using powerful pectoral muscles, and they will do it right out of your tank if you give them the chance. A tight-fitting lid is not optional. It is the single non-negotiable requirement for keeping any hatchetfish species.

    Hatchetfish fly. Your lid is either tight or your fish is on the floor. There is no in-between.

    The Reality of Keeping Hatchetfish

    The jumping is not a behavior problem. It is instinct. In the wild, hatchetfish jump to escape predators and catch flying insects. In your tank, any sudden disturbance, a loud noise, a fast-moving hand near the glass, or a startled tank mate can trigger a jump. A lid is not optional. It is the most critical piece of equipment for this species.

    They are strict surface dwellers. Hatchetfish spend virtually all their time at the surface. They do not explore the middle or bottom of the tank. This makes them perfect for filling the top layer of a community setup, but it also means surface agitation from filters or airstones stresses them. They need calm water.

    They are more sensitive than most tetras. Hatchetfish are wild-caught more often than tank-bred, and they are more sensitive to water quality fluctuations than common community tetras. Stable parameters and gentle acclimation are essential. They are not a good choice for new or unstable tanks.

    Biggest Mistake New Owners Make

    Not having a proper lid. I cannot stress this enough. Hatchetfish will find gaps you did not know existed. Every opening around filter intakes, heater cords, or airline tubing needs to be sealed.

    Expert Take (Mark Valderrama, AquariumStoreDepot)
    Hatchetfish are one of the most fascinating freshwater species you can keep, but they demand a lid and calm conditions. When properly housed, they are the best surface-dwelling fish in the hobby by a wide margin.

    Key Takeaways

    • Hatchetfish get their name from their unique ‘Hatchet-like’ body shape.
    • It is a peaceful community fish that enjoys the company of at least 6 to 12 fish. 
    • They are the only true flying fish with large pectoral muscles that work like wings.
    • Many species of hatchetfish have bioluminescence with their own pattern of lights in order to communicate, attract prey, and camouflage. 

    An Overview Of The Fish Species

    Scientific NameGasteropelecus sternicla
    Common NamesRiver hatchetfish, common hatchetfish, silver hatchetfish
    FamilyGasteropelecidae
    OriginSouth America in Brazil and in the southern tributaries of the Amazon river basin
    DietOmnivore
    Care LevelModerate
    ActivityModerate
    Lifespan5 years
    TemperamentPeaceful 
    Tank LevelSurface dwellers
    Minimum Tank Size20 gallons
    Temperature Range72. 81° F
    Water Hardness2 – 15 dGH
    pH Range6.0. 7.5
    Filtration/Water FlowModerate
    Water TypeFreshwater
    BreedingEgg Layer
    Difficulty to BreedDifficult
    CompatibilityCommunity tanks
    OK, for Planted Tanks?Yes

    Classification

    OrderCharaciformes
    FamilyGasteropelecidae
    GenusCarnegiella / Gasteropelecus / Thoracocharax
    SpeciesMultiple species across three genera
    ASD Difficulty Rating: Intermediate | 6/10
    Hatchetfish are surface specialists with two non-negotiable requirements: a tight-fitting lid and soft, slightly acidic water. They are not difficult once you understand those needs, but they expose sloppy setups fast.

    Origin And Habitat

    Linnaeus in 1758 discovered the common hatchetfish; Gasteropelecus sternicla species. They originate in South America in Brazil and mainly in south and central America (Southern tributaries of the Amazon river basin). Common hatchetfish are also found in the small streams of Guyana and Surinam with dense vegetation (floating aquatic plants). 

    In their natural habitat, they are found in regions that are densely populated with aquatic plants. In the wild, the common hatchetfish are mostly found at the water surface and retreat occasionally when threatened or in danger. Mostly, you will find these fish species flying from the surface of the water, trying to catch flying insects.

    Fun Fact: Certain hatchetfish species participate in the largest migration in the world, migrating from 1,500 meters (about 5,000 feet) of depth to shallower seas. They gather with their twilight zone neighbors in the shadows to eat at the zooplankton feast, where they consume crustaceans, copepods, floating fish larvae, mosquito larvae, and ostracods. But as soon as the sun comes up, it's time to head back to the twilight zone. The hatchetfish has no control over when the axe will fall.

    The Definition Of Hatchetfish 

    The common hatchetfish species go by their scientific name, Gasteropelecus sternicla. They are known for their unique but strange-looking body that looks like the head of the hatchet. Hence, the term Gasteropelecus in their scientific name also refers to a hatched-shaped belly. 

    One of the leading reasons for their popularity is not their particular body shape, but their ability to leap from the water’s surface and fly through the air. River hatchetfish or common hatchetfish can also flap their large pectoral fins and catch flying insects. Thus, in the fish-keeping world, the hatchetfish bag the title of the only true flying fish. 

    Species of hatchetfish are able to fly more than 4 feet and move their pectoral fins like a bird’s wings in the air. As astounding as it sounds, the flying power of hatchetfish is a problem in hatchetfish aquariums as this ability also develops the need for a tight-fitting lid.

    Characteristics 

    The common hatchetfish are small, shiny silverfish with a hatchet-shaped bodies. They are tropical fish found in mostly warm temperature regions at a depth of around 200 to 1000 meters.

    Hatchetfish have deep bodies that are flattened from side to side. The tails are slender with big eyes. The common hatchetfish are often mistaken as their cousin relative, the silver hatchetfish. However, the common hatchetfish species are slightly larger than the Silver hatchetfish.

    What Is The Average Size Of These Tropical Fish Species?

    The average size of Hatchetfish is around 2.6 inches in captivity. However, the wild-caught fish is a bit smaller in size, around 1 1/2 inches. 

    How Long Do They Live?

    On average, hatchetfish lives for about 3 to 5 years in captivity. Since they are social and peaceful fish, you should to keep a group of 8 or more fish to improve their life quality. 

    What Are The Different Types?

    There are five different species of hatchetfish found in the aquarium hobby.

    Silver

    Silver Hatchetfish

    The most common type of Hatchetfish is the silver hatchetfish. They have silver bodies that seem almost transparent and a unique ‘hatchet-like’ body shape. The silver hatchetfish are great swimmers and are known for their ability to jump out of the aquarium. Therefore, always choose a tight-fitting lid for your aquarium. 

    Blackwing 

    The Blackwing hatchetfish are larger than the other species of hatchetfish. They grow around 3 inches in length with darker bodies adorned with metallic green or blue hues on the fins. Temperament-wise, they are semi-aggressive fish but generally peaceful fish, ideal for a community tank.

    Marbled

    The marbled hatchetfish are somewhat similar in appearance to the popular silver hatchetfish. However, they have smaller bodies and marble-like mottled coloration on their bodies. Marbled hatchetfish are schooling fish that enjoys the company of other species of hatchetfish. Thus, I advise keeping a group of 8 or more to keep your fish healthy and thriving. 

    Marbled Hatchetfish

    Carnation

    Carnation hatchetfish are the species that experienced fishkeepers would enjoy. That’s because they are sensitive to water quality and conditions, so little attention is required. Size-wise, they are a smaller species with a pink or peach-colored body. 

    Pygmy

    The smallest species of hatchetfish are the pygmy hatchetfish (video source). They grow only up to 1 inch in length. Also, they have silver bodies with a black stripe along their dorsal fin. 

    Common Hatchetfish Care

    The freshwater Hatchetfish is a particularly hardy fish. However, it is still recommended for aquarists with some previous fish-keeping experience. That’s because they are active fish and need lots of free swimming space. Also, they are highly prone to fish diseases such as Ich, especially when introduced to a new tank. 

    Therefore, you should to quarantine the new fish before introducing them into the community tank.

    Are they hard to care for?

    No, they are not difficult to keep and care for. However, you need a certain level of expertise in keeping their water conditions optimal. Species of hatchetfish are sensitive to water conditions. Therefore, a little maintenance goes a long way. It’s crucial to maintain your tank and clean all the decomposing organic matter, check water quality regularly, and clean fish waste. 

    These toxins pollute the fish tank and affect the wellness of your fish. Therefore, to cater to these water conditions, I recommend replacing the water on a daily basis. If your tank is densely populated with a group of fish, at least 50% of the water should be replaced every week. 

    Aquarium Setup 

    The natural habitat of hatchetfish undergoes rainy season and floods. So, thankfully, they can survive in a wide range of pH, GH, and other water parameters. Hatchetfish are tropical freshwater fish that appreciates water temperature between 75. 80°F. 

    Since they are schooling fish, they thrive in a group of 6 to 12 or more. I recommend keeping at least 12 fish in the community tank because they feel safer and more comfortable. Though hatchetfish are active fish, but not exceptional. 

    Therefore, the minimum tank size should be 20 gallons or larger. Regardless of the tank size, install a tight-fitting lid or hood because you will find them jumping out of the aquarium often. Besides, if you have installed a filter, heater, or pumps, you are sure to cover any openings with aquarium-safe materials such as craft mesh, etc.

    Tank Size

    Hatchetfish are not super active fish but they do require free swimming space, considering the fact that they thrive in a community of at least six fish. 

    The minimum tank size should be 20 gallons. I recommend a long tank with sufficient surface space as they will jump out of the water. 

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    Water Parameters

    Even though hatchetfish are moderately hardy aquarium fish. There are specific water parameters to maintain for them to thrive in your aquarium. 

    Hard Rule: Your tank must have a tight-fitting lid before you add hatchetfish. No gaps, no open spaces around filter tubes or heater cords. Hatchetfish are powerful jumpers and will clear a gap without warning. Out of water, they die within minutes. This is not an exaggeration.

    Filtration And Aeration 

    Hatchetfish are highly sensitive to ammonia and nitrites. Therefore, installing a quality filter is important. 

    If you have a small tank of around 15 gallons, Hang-on-back filters are easy to install and maintain, and they provide excellent filtration. However, if you have a larger aquarium of around 20 gallons or more, I recommend installing canister filters as they are more powerful than HOB and ideal for larger aquariums.

    For hatchetfish tanks, I advise installing sponge filters as they don’t produce strong currents and are gentle. 

    No matter what type of filter you use, it’s crucial to clean and maintain them daily for efficient results.

    For aeration, it’s important to avoid strong currents in the tank as they can lead to stressful behavior. The use of air stones and air pumps is recommended for tank aeration. 

    Lighting

    Hatchetfish occupies the surface of the water tank and does best in tanks with moderate to low lighting. Therefore, the ideal lighting for hatchetfish is moderate to low, depending on various factors, including plants, and species of hatchetfish. Low light aquarium plants are most ideal for them.

    Aquatic Plants and Decorations

    Aquatic plants and decorations are important for a hatchetfish tank because it provides hiding places and a fun natural environment for your fish. That’s because their natural habitat is laden with hiding places and vegetation. Also, plants improve the quality of water by absorbing excess nutrients and promoting a healthy balance of microorganisms in the water.

    Some of the best aquatic plants for your hatchetfish are:

    1. Floating plants: Amazon Frogbit, water lettuce, Salvinia, etc.
    2. Mosses: Java Moss, Christmas Moss, etc
    3. Other plants: Java Fern, Anubias, Cryptocoryne, etc.

    For decorations, you should to add driftwood, rocks, and stones to create a natural environment for your fish. 

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    Tank Maintenance

    Freshwater hatchetfish are simple to keep and take care of. To maintain their water in the best possible condition, you need to have a particular level of competence. Because hatchetfish species are sensitive to water quality, a little upkeep may go a long way. Maintaining your tank is essential, as is cleaning out all of the fish waste, nitrate, nitrite, and phosphate buildup. 

    These chemicals contaminate the fish tank and harm your fish’s health. I advise refilling the water every day in order to address these water conditions. If you have a lot of fish in your tank, you should change the water every week by at least 50%. 

    Substrate

    Hatchetfish are surface dwellers. Thus, choosing a substrate for their tank is not challenging. However, you need to consider the size of the tank, and the type of plants in your aquarium before choosing the right substrate.

    Fortunately, you can keep any substrate you want as long as it suffices your tank’s needs. Fine sand is the most popular option for substrate because it does no harm to your fish’s fins. Gravel and Aqua soil are also common substrate options.

    What People Get Wrong

    The biggest mistake is an unsecured lid. Hatchetfish are surface fish that startle easily, and a startled hatchetfish jumps. Any gap around a filter, heater cable, or return tube is a death trap. Before you buy hatchetfish, seal every opening in your lid. This is not optional.

    Second mistake: adding them to a new or uncycled tank. Hatchetfish are more sensitive to water quality than their appearance suggests. Ammonia or nitrite spikes will kill them quickly. They belong in an established tank with stable parameters, not a cycling setup.

    Third: keeping them without surface cover. Floating plants , water lettuce, frogbit, or even hornwort at the surface , give hatchetfish the security they need. In a bare tank under bright overhead lighting, they hide at the edges and stress out. A floating plant layer keeps them active and visible.

    Community Tank Mates 

    Hatchetfish are peaceful fish that are relatively shy. Therefore, they should be kept with compatible fish that is not hostile or aggressive towards them. Since they are schooling fish, always keep them in a group of 6 or more.

    The bigger the school, the happier the fish. Some of the suitable tank mates for hatchetfish are:

    1. Tetras
    2. Rasboras
    3. Corydoras
    4. Gouramis
    5. Dwarf cichlids
    6. Dwarf shrimps
    7. Other hatchetfish

    What Do They Eat?

    Hatchetfish are carnivorous fish that mostly feed on crustaceans and insects in their natural habitat. They have their mouths on the top of their bodies so they prefer eating surface foods such as fruit flies, mosquito larvae, and small vinegar flies.

    In captivity, they accept live food, fish flakes, flake foods, and frozen foods. Basically, any food that is on the surface of the water. It’s recommended to feed them protein-rich food such as brine shrimp or blood worms, daphnia every day, etc. You can also feed them vegetables occasionally such as blanched spinach, zucchini, and cucumber.

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    What Is The Feeding Frequency? 

    You should feed them several feedings a day. Ideally three times a day. However, make sure not to overfeed your hatchetfish otherwise, it will create health issues or water quality problems.

    Breeding

    Hatchetfish are egg layers. But in captivity, the common hatchetfish has failed to breed. However, the marbled hatchetfish are hardy and easy to breed as compared to other species.

    Overall, the breeding of hatchetfish is challenging, but with the right conditions, it’s certainly possible.

    Choose A Breeding Tank

    Hatchetfish need a spacious tank with lots of hiding places, floating plants, and other] vegetation. Adjust the lighting to mimic daylight or use some natural sunlight to escalate the process. The breeding tank should have ideal water parameters with a pH range of around 6.0 to 7.5

    Feed The Breeding Fish 

    Feed your breeder fish with high-quality protein-rich food that includes live or frozen foods such as daphnia, mosquito larvae, blood worms, and brine shrimp. This will help in the breeding and spawning process. Once they are well-fed and nourished, introduce the pair into the breeding tank.

    The Perfect Timing 

    Hatchetfish breed in the early morning hours, therefore, mimic the natural environment of fish in the breeding tank. Gradually increase the light intensity and then reduce it in the evening to trigger the breeding behavior. 

    Keep An Eye On The Floating Plants

    You will find the fish eggs mostly on the underside of floating plants or on the tank glass. Remove the adult fish as soon as they lay eggs as the adult fish might end up eating eggs. The fish eggs hatch in around 3 days. The baby fish need to be fed small amounts of brine shrimp with other small live food at least thrice a day.

    Fish Diseases

    Want an easy community fish? This is not it. Want a species that rewards dedicated care? The Hatchetfish delivers if you put in the work.

    The hatchetfish are susceptible to Ich. Therefore, it is crucial to quarantine the new fish in a separate tank before introducing it to the community tank. However, if you don’t keep a check on water conditions, there are higher chances of your fish developing diseases.

    Like most fish, these freshwater fish are subject to many other fish diseases, such as skin flukes, parasitic infections, and fungal or bacterial infections. Despite being hardy, these fish species still get diseases. Thus, whatever you add to your aquarium. new fish, tank decorations, aquatic plants, substrate, properly clean and quarantine everything before moving to the main tank.

    What It Is Actually Like Living With Hatchetfish

    The Hatchetfish is more active and aware of its surroundings than most people expect. In a properly set up tank, it shows behaviors that generic care guides never mention.

    Feeding becomes a routine both you and the fish look forward to. The Hatchetfish learns your schedule and responds to your presence near the tank within the first few weeks.

    Maintenance is consistent, not difficult. Regular water changes and parameter monitoring become second nature. The fish rewards consistent care with better color, more activity, and visible health.

    Over time, you notice personality traits unique to your individual fish. Some are bold explorers. Others are cautious observers. That individual personality is what turns casual fishkeeping into a genuine hobby.

    FAQs

    How Many Should I Keep?

    Hatchetfish enjoys being in a school of at least 6 to 12 and even more.

    What Fish Can Live With Them?

    They are peaceful fish that are also shy. Therefore, they should be kept with compatible fish that is not hostile or aggressive towards them. The ideal tank mates for hatchetfish are:

    Tetras
    Rasboras
    Corydoras
    Gouramis
    Dwarf cichlids
    Dwarf shrimps
    Other hatchetfish

    Are They Easy To Keep?

    Yes, they are hardy and easy to keep. However, they are not recommended for beginners as they demand particular water conditions and tank maintenance.

    What Do They Eat?

    They are carnivorous that need a diet rich in protein. Frozen foods, live food, frozen fried foods, meaty foods, brine shrimp, tubifex, fruit flies, and daphnia are excellent sources of nutrition for Hatchetfish.

    Are They Aggressive?

    No, they are very peaceful and non-territorial. In fact, they are a great choice for a community tank. However, if they are kept in small tanks or containers where they feel threatened, they might become semi-aggressive toward other hatchetfish.

    Are They Hardy?

    Yes, they are moderately hardy fish recommended for aquarists with some prior experience.

    Is the Hatchetfish Right for You?

    Good Fit If:

    Avoid If:

    Final Thoughts

    Hatchetfish, like their unique name, are interesting and intriguing fish with unusual bodies, shimmery scales, and peaceful nature. The fish species, despite their many different types, share similar characteristics and behavior. Hence, ideal for community tanks and a treat to watch and care for.

    Check out our tetra tier list video where we rank the most popular tetras in the hobby, including the hatchetfish:

    This article is part of our Tetras: Complete A-Z Species Directory. Visit the hub page to explore care guides for all tetra species we cover.
  • 15 Best Platy Tank Mates for a Peaceful Community Tank

    15 Best Platy Tank Mates for a Peaceful Community Tank

    Platies are one of the best beginner fish in the hobby: peaceful, colorful, hardy, and genuinely fun to keep. But here’s the part nobody talks about upfront: if you have males and females together, you will have fry. Constantly. The tank mates you choose determine whether your platy setup stays enjoyable or turns into an overstocked mess fast.

    The fish is easy. The breeding is what separates people who enjoy platies from people who get overwhelmed by them.

    I’ve worked with platies for decades, both personally and through the stores I managed. They’re as forgiving as freshwater fish get, but “forgiving” doesn’t mean “no plan needed.” The right tank mates make a platy tank thrive. The wrong ones (or no plan for the fry) will have you dealing with problems inside six months.

    Key Takeaways

    • Platies are hardy, peaceful community fish, but livebearer breeding reality means you need a fry plan before you add tank mates
    • Best tank mates are peaceful fish sharing neutral to slightly alkaline water (pH 7.0–8.0) and similar temperature ranges (72–79°F / 22–26°C)
    • Keep at least 2–3 females per male platy to prevent harassment; this applies to all livebearer mixes including mollies and guppies
    • Avoid fin-nippers, aggressive cichlids, and large predatory fish that can swallow platy fry or stress adults

    Caring For Your Platies: A Brief Recap

    Before picking tank mates, you need to know what platies actually need. The basics set the boundaries for everything else in the tank.

    Types of Platies

    There are two species in the hobby: the Southern Platy (Xiphophorus maculatus) and the Variable Platy (X. variatus). Decades of selective breeding have produced a huge variety of color forms, including:

    • Variegated platy
    • Mickey Mouse platy
    • Swordtail platy
    • High fin platy
    • Wagtail platy
    • Balloon platy
    Golden Wagtail Platy

    The good news: all these varieties share the same care requirements.

    Aquarium Size & Parameters

    Platies come from the warm waters of Mexico, Central America, and northern South America. They need water temperatures of 68–79°F (20–26°C), so most setups need an aquarium heater.

    Target parameters:

    • pH: 7.0–8.2
    • Water hardness: 10–30 dGH
    • Minimum tank size: 15 gallons (57 L) for platies alone; 30 gallons (114 L) for a community setup

    A 15-gallon (57 L) works for a small group of platies. For a mixed community, 30 gallons (114 L) minimum, and bigger is always better once fry start surviving.

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    Maintenance

    Platies need a quality filter and regular partial water changes. Get yourself a water test kit and use it. There’s no substitute for knowing what’s actually in your water.

    Breeding Platies

    Put males and females together and they will breed. That’s not a maybe. It’s a certainty. In a community tank, most fry get picked off by other fish, including the platies themselves, and the population stays manageable on its own. If you actually want to raise fry, pull the pregnant female into a separate tank before she drops. Otherwise, let the community handle it and don’t stress about it. Most people do just fine without intervention.

    Feeding

    Platies eat almost anything: high-quality flake or micro-pellet food as a daily staple, supplemented with frozen or live foods a few times a week. Most tank mates in this guide thrive on the same diet. I’ll call out exceptions where they exist.

    What People Get Wrong About Platy Tank Mates

    The number-one mistake I see is picking tank mates based purely on temperament, checking the “peaceful” box and calling it done. Temperament is only half the equation. The bigger issue is the livebearer breeding dynamic.

    In my experience, the male-to-female ratio issue catches more people off guard than any tank mate compatibility question. Put platies with guppies and mollies without managing male-to-female ratios and you don’t get a peaceful community: you get constant harassment. I’ve watched this play out at the stores I managed: customers would come back two months later wondering why their females were dying, and the answer was almost always the same ratio problem. Females get run ragged. Within a few weeks, you’ll notice a female hiding, losing color, refusing food. That’s stress, and it progresses to death if nothing changes.

    The second mistake is ignoring pH. Platies want neutral to slightly alkaline water: 7.0 to 8.0. That’s a different world from discus, altum angels, or wild-caught tetras that need soft, acidic conditions. I’ve seen hobbyists try to find a “compromise” parameter that keeps both groups alive. It doesn’t work. One group is always running suboptimal, and that shows up in color, behavior, and lifespan. Pick tank mates that actually live in the same water, not ones you’re hoping will adapt.

    Biggest Mistake Platy Keepers Make

    Mixing male-heavy livebearer tanks without a ratio plan. After 25+ years in this hobby and time running fish retail, I’ve seen this wreck otherwise great community setups more times than I can count. One male platy relentlessly chasing two females in a 20-gallon (76 L) sounds harmless. It isn’t. The females are constantly evading, constantly stressed, constantly burning energy. Over weeks, immune function drops, they become prone to disease, and they stop eating well. You’ll lose fish that look physically healthy and never connect the dots back to the male-female ratio. Keep at least two to three females for every male, regardless of tank size.

    Top 15 Tank Mates for Platy Fish

    Every species here shares platy water chemistry: neutral to slightly alkaline pH, moderate hardness, and a temperature range in the low-to-mid 70s°F (22–24°C). That’s the filter that matters most. Compatibility starts with parameters, not just personality.

    Expert Take

    After 25+ years in this hobby (and years managing freshwater retail), platies are the livebearer I’d recommend to anyone starting out. They’re peaceful, hardy, adaptable, and they don’t nip fins. I’ve built platy communities in my own tanks and in every store I managed. These are the tank mates that actually held up long-term. The main challenge with tank mates isn’t compatibility: it’s fry management. In my experience with platies, the male-to-female ratio is the single thing most people get wrong. Platies breed constantly, and if you’re putting them in a community tank, you need a plan for the fry. Other fish will eat most of them. That’s actually fine for population control. What breaks a platy tank is the ratio, not the tank mates themselves. — Mark Valderrama, AquariumStoreDepot

    Quick-Reference Comparison Table

    Species Adult Size Min Tank Ease Compatibility
    Molly Fish 3–5 in (7.6–12.7 cm) 30 gal (114 L) 8/10 High
    Guppy Fish 1.5–2.5 in (3.8–6.4 cm) 10 gal (38 L) 8/10 High
    Honey Gourami 2 in (5 cm) 10 gal (38 L) 8/10 High
    Betta Fish 2.5 in (6.4 cm) 10 gal (38 L) 6/10 Conditional
    Zebra Danio 2 in (5 cm) 20 gal (76 L) 9/10 High
    Cory Catfish 1–3 in (2.5–7.6 cm) 20 gal (76 L) 9/10 High
    Bristlenose Pleco 5–6 in (12.7–15.2 cm) 29 gal (110 L) 8/10 High
    Harlequin Rasbora 1.75 in (4.4 cm) 20 gal (76 L) 9/10 High
    Otocinclus 1.75 in (4.4 cm) 20 gal (76 L) 7/10 High
    Boeseman’s Rainbowfish 4 in (10 cm) 30 gal (114 L) 7/10 High
    White Cloud Mountain Minnow 1.5 in (3.8 cm) 15 gal (57 L) 8/10 Conditional
    Neon Tetra 1 in (2.5 cm) 15 gal (57 L) 8/10 High
    Ember Tetra 0.75 in (1.9 cm) 10 gal (38 L) 8/10 High
    Angelfish 6 in (15 cm) 29 gal (110 L) 6/10 Conditional
    Hatchetfish 1.25 in (3.2 cm) 20 gal (76 L) 6/10 High

    1. Molly Fish

    Ease: 8/10 Natural livebearer tankmate. Manage the male-to-female ratio.

    How Do Molly Fish Look Like

    Mollies and platies are a natural pairing: both livebearers, both adaptable, both peaceful. Mollies top out at 5 inches (12.7 cm) and need at least 30 gallons (114 L). One thing to watch: if you’re keeping both species, the male-to-female ratio issue doubles. Male mollies will pursue female platies and vice versa. Keep the whole livebearer population skewed female: two to three females per male across all species combined.

    2. Guppy Fish

    Ease: 8/10 Excellent match. A mixed livebearer tank needs a numbers plan.


    Guppy Fish
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    Guppies are another live-bearing fish that thrives alongside platies. They’re smaller (topping out around 2.5 inches / 6.4 cm) and even more colorful in the males. There are many guppy varieties to choose from. Guppy fry get eaten by most community fish, which helps keep the population in check without any intervention.

    3. Honey Gourami

    Ease: 8/10 Peaceful, works perfectly with platies, no livebearer complications.


    Honey Gourami
    Honey Gourami

    One of the more peaceful Gourami fish available in the hobby. Has a unique yellow coloration and only grows up to 2 inches in length

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    The honey gourami is a quiet, unassuming fish that works beautifully in a platy community. At 2 inches (5 cm), it doesn’t compete for space, doesn’t harass other fish, and its golden coloration stands out alongside the varied platy color forms. A related species of the betta fish, it uses a labyrinth organ to breathe atmospheric air, which means it tolerates slightly lower oxygen levels better than most tank mates.

    4. Betta Fish

    Ease: 6/10 Works with careful planning. Not a casual add.

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    Bettas can work with platies, but they’re not a casual add. A male betta in a platy community needs a tank of at least 20 gallons (76 L), not the 5-gallon solo minimum, with plenty of sight breaks. Choose a betta whose color differs from your platies, and skip long-finned platy varieties. A betta that mistakes its platies for rival fish will attack. The honey gourami is an easier option if you want the gourami look without the aggression risk. Choose a betta if you want a centerpiece fish with personality; choose the honey gourami if you want zero drama.

    5. Zebra Danio

    Ease: 9/10 One of the most reliable platy tank mates in the hobby.

    What Does A Zebra Danio Look Like

    Zebra danios are fast, hardy, and completely unbothered by platies. They school actively in the mid-water and upper column, which creates movement in a tank dominated by platies hovering in the middle. Keep at least 6. Danios in small groups get nippy. In a proper school of 8 or more, they’re model citizens. These fish handle a wide range of water conditions and bounce back from beginner mistakes better than almost anything else on this list.

    Hard Rule: Keep at least 2–3 female platies per male, across all livebearers in the tank combined. A single female relentlessly chased by one or more males will be harassed to exhaustion and death over weeks. The ratio applies whether you have 1 species or 4. This is not optional.

    6. Cory Catfish

    Ease: 9/10 The best bottom-dweller for a platy community. No competition.

    What Does A Cory Catfish Look Like

    Corydoras are my default recommendation for any platy community. They stay on the bottom, clean up whatever falls to the substrate, and have zero interest in bothering anyone. Most cory species want the same neutral to slightly alkaline water as platies: bronze cories (C. aeneus) and peppered cories (C. paleatus) are the most forgiving and easiest to find. Keep at least 6. I’ve kept groups of 4 and they’re fine, but 6 or more and you’ll see a completely different level of activity. They move together, they feed together, and they’re genuinely fun to watch work a tank.

    7. Bristlenose Pleco

    Ease: 8/10 Reliable algae control. Stays small. Needs driftwood.


    Bristlenose Pleco
    Bristlenose Pleco

    The Bristlenose Pleco is a smaller Pleco that does a great job of eating algae. Peaceful and gets along with most fish

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    The bristlenose pleco is the pleco for community tanks. Unlike common plecos that hit 18 inches (45 cm) and outgrow everything, bristlenoses stay under 6 inches (15 cm) and do a real job on algae. Keep one per tank. Two males will fight over territory. Give it driftwood to graze on and a cave to claim, and it will mostly disappear during the day and work the tank at night.

    8. Harlequin Rasbora

    Ease: 9/10 One of the best schooling fish for a platy community.


    Harlequin Rasbora
    Harlequin Rasbora

    A peaceful schooling fish. An ideal community fish. A great beginner fish

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    Harlequin rasboras are a standout schooling fish for this type of community. The black triangular patch on the rear half of the body gives them a distinctive look, and a tight school of 10 or more moving together is genuinely impressive. Their lower pH preference (down to 6.0) works fine alongside platies at 7.0–7.5, and the overlap zone is comfortable for both. Avoid very small rasbora species like chili rasboras: at under 1 inch (2.5 cm), they get outcompeted at feeding time and stressed by the activity level of larger platies.

    9. Otocinclus

    Ease: 7/10 Best algae grazer for the community, but needs an established tank.


    Otocinclus Catfish
    Otocinclus Catfish

    A small algae-eating fish. Also great with freshwater shrimp.

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    Otos are the algae grazers you want when the tank has a real algae coating to maintain. Don’t add them to a new setup; they need an established tank with a consistent algae food source or they’ll starve. Keep 4–6 together; they do better in small groups than alone. They’re completely vegetarian, which means they’re safe with platy fry. They’re one of the few tank mates you can say that about.

    10. Boeseman’s Rainbowfish

    Ease: 7/10 Striking display fish that matches platy water parameters well.

    Boesemani Rainbowfish

    Boeseman’s rainbowfish are visually striking: neon blue on the front half, vivid orange-yellow on the back. They prefer the same neutral to slightly alkaline water as platies, and that overlap makes the chemistry side easy. You need at least 6 of them and 30 gallons (114 L) of space. These are active mid-water fish that need room to move. They’re one of the larger options on this list, which adds visual impact to a platy community without adding aggression. Browse the full range of rainbowfish species if you want to explore other options in this family.

    11. White Cloud Mountain Minnow

    Ease: 8/10 Excellent match at the cooler end of the platy temperature range.


    White Cloud Mountain Minnow
    White Cloud Mountain Minnow

    A very peaceful fish that does well in coldwater. Other minnow varieties are also available

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    White cloud mountain minnows are graceful, peaceful schooling fish that work well with platies, with one temperature caveat. White clouds are cold-water fish that prefer 60–72°F (16–22°C). Platies can drop to 68°F (20°C), so the overlap window is 68–72°F (20–22°C). Keep the tank at that range and both species do fine. Push it warmer for the platies and the minnows will struggle. This is a conditional compatibility: make the temperature decision first, then commit.

    12. Neon Tetra

    Ease: 8/10 The classic platy community addition. Reliable and visually striking.


    Neon Tetra
    Neon Tetra

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    One of the most popular freshwater community schooling fish available in the aquarium trade.

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    Neon tetras have earned their reputation. They’re peaceful, visually dramatic in a school, and completely compatible with platies at the water parameter level. Keep 10 or more for the full schooling display. Groups under 6 tend to scatter and look sparse. The blue and red neon stripe under good lighting alongside the color variety of platies is one of the better beginner community combinations you can build.

    13. Ember Tetra

    Ease: 8/10 Small, colorful, and peaceful. Great for smaller platy setups.


    Ember Tetra
    Ember Tetra

    A small red tetra that grows up to 1.25 inches. A very peaceful schooling fish

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    Ember tetras are small (under an inch / 2.5 cm), but in a school of 10 or more, their burnt-orange coloration against green plants is striking. They’re best in a planted platy tank where there’s some cover, since they can get outcompeted at feeding time in busy tanks. Their pH preference (down to 5.5) runs slightly softer than ideal platy water, but at 7.0 the overlap is fine. A good choice for anyone with a 20-gallon (76 L) platy setup who wants a schooling fish without needing a large tank.

    14. Angelfish

    Ease: 6/10 Works with adult platies. Will eat fry and small juveniles.

    Koi Angelfish

    Angelfish are one of the hobby’s great centerpiece fish. The catch: they’re large enough to swallow platy fry and juveniles whole. Keep angels with fully adult platies only. The temperature ranges are compatible: both like the mid-to-upper 70s°F (24–27°C), but a 55-gallon (208 L) tank is much more practical than the 29-gallon minimum when combining angels with an active livebearer community. Choose angelfish if you want a dramatic showpiece; go with honey gouramis if you want compatibility without size complications.

    15. Hatchetfish

    Ease: 6/10 Unique surface dweller, but sensitive and escape-prone.

    Marble Hatchet Fish

    Hatchetfish are unlike anything else on this list. They live exclusively at the surface, don’t compete for mid-water space with platies, and their deep-bodied silhouette is genuinely unusual. The trade-off: they jump. A tight-fitting lid is not optional. It’s essential. They’re also more sensitive to water quality than most fish here, so they’re better suited to hobbyists who already have a stable, mature tank. Keep 6 or more; they’re social and stay calmer in a proper school.

    Community Aquarium Setup Guidelines

    Found the right combination? Run through this before you buy.

    The Aquarium

    A 30-gallon (114 L) tank is the practical minimum for a platy community. A 20-gallon (76 L) works only if you’re keeping just two small species in modest numbers. Every tank needs a secure lid. Most fish on this list jump, and platies themselves have been known to launch themselves when startled.

    Essential Hardware

    A quality aquarium filter is non-negotiable. Hang-on-back filters work well for tanks up to 40 gallons (151 L). For larger setups or more bioload, consider a canister filter.

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    You’ll also need a heater, as almost everything on this list wants water in the low-to-mid 70s°F (22–24°C).

    Substrate & Decorations

    Sand or fine gravel works for the bottom layer. Choose smooth substrate if you’re keeping corydoras: their sensitive barbels need it. Driftwood and rocks add natural structure. Live plants (Anubias, Java fern, hornwort) are the right call for a platy community. They improve water quality, reduce stress, and give fry somewhere to hide if you’re not using a breeding tank.

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    Mark’s Pick: For a classic platy community, I’d go with corydoras on the bottom, a school of harlequin rasboras or neon tetras in the mid-water, and a bristlenose pleco for algae duty. All three tolerate the same neutral to slightly alkaline water as platies, none of them cause conflict, and the result is a tank with activity at every level. That’s the setup I’ve recommended for years, and it still holds up.

    Platy Tank Mates FAQs

    What fish can live with platies?

    Mollies, guppies, corydoras, honey gouramis, zebra danios, harlequin rasboras, neon tetras, bristlenose plecos, and otocinclus are all reliable platy tank mates. The common thread: peaceful temperament and neutral to slightly alkaline water (pH 7.0–8.0). Avoid aggressive species, fin-nippers, and any fish large enough to swallow adult platies.

    How many platy tank mates can I keep together?

    In a properly sized tank, you can mix several species comfortably. A 40-gallon (151 L) tank can support a group of 6–8 platies, a school of 8–10 rasboras, and 6 corydoras without crowding. The limiting factor is bioload and livebearer population growth over time. Plan for fry production when calculating how many fish you’re actually adding to the tank.

    Are platies good community fish?

    Yes. Platies are some of the best community fish available for a beginner setup. They’re peaceful, adaptable, colorful, and hardy. The one thing that catches people off guard is the breeding rate. If you have males and females, you’ll have fry. Plan for that and the rest is straightforward.

    Do platies breed in a community tank?

    Yes, continuously. Females give birth to live fry roughly every 4–6 weeks. In a community tank, most fry get eaten by other fish, which naturally limits population growth. If you want to raise fry, move the pregnant female to a separate tank before she gives birth. If you don’t want fry at all, keep only males or only females, but be aware that an all-male platy tank produces chasing behavior between males.

    Can platies live with angelfish?

    Adult platies: yes. Platy fry and juveniles: no. Angelfish are large enough to eat anything that fits in their mouth, and platy fry definitely qualify. If you want angelfish in a platy community, keep only fully grown adult platies, use a 55-gallon (208 L) or larger tank, and accept that fry won’t survive.

    What fish should you NOT keep with platies?

    Avoid large cichlids (Oscars, Jack Dempseys, Green Terrors), aggressive fin-nippers like tiger barbs in small groups, and any fish requiring very soft or acidic water below pH 6.5. Large predatory fish will eat platies. Fin-nippers will shred their fins. And fish that need very different water chemistry than platies will never thrive in the same tank. One group or the other will be compromised.

    Should You Build a Platy Community Tank?

    Good Fit If:

    Avoid If:

    Final Thoughts

    Platies are a gateway fish: genuinely easy to keep, endlessly varied in color, and compatible with most of what you’d want in a community tank. The livebearer breeding reality is not a problem if you go in with a plan. Know your male-to-female ratio, choose tank mates from the same water chemistry world, and decide early whether you want to manage fry or let the tank handle it naturally.

    Here’s what I tell people after 25 years in this hobby: a well-planned platy community is one of the most satisfying tanks you can build. A poorly planned one (wrong ratios, wrong chemistry, no fry strategy) becomes a frustrating mess within months. The fish aren’t the problem. The planning is. Get the planning right and everything else follows.

    What’s your favorite platy combination? Drop it in the comments. And if you found this useful, subscribe to our YouTube Channel for more freshwater content from someone who’s actually been doing this for decades.

    📘 Want to learn more? This article is part of our complete Freshwater Fish Guide: your ultimate resource for freshwater species, care tips, tank setup, and more.