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Tag: Freshwater

  • White “Algae” in Your Aquarium: What It Actually Is and How to Get Rid of It

    White “Algae” in Your Aquarium: What It Actually Is and How to Get Rid of It

    If you’re seeing white fuzz in your tank, the most likely culprit is a benign fungus growing on new driftwood. It’s one of those things that freaks people out the first time they see it. but it’s completely harmless to fish and almost always disappears on its own within a few weeks as the wood finishes leaching. I’ve seen it in nearly every tank I’ve set up with new driftwood. Don’t panic.

    “White algae” actually covers a few different things. fungal growth, bacterial biofilm, and in some cases genuine white slime algae. Knowing which one you’re dealing with changes how you handle it. Here’s a breakdown of the causes and what to do about each.

    Key Takeaways

    • White algae isn’t actually a type of algae. Instead, it’s more likely to be a fungus.
    • This algae is most likely to appear on new driftwood and other organic aquarium additions but can be the leftovers of dead algae too.
    • There are a few ways to get read of this algae, including removing it by hand, adding different fish species and invertebrates that eat white algae, or using aquarium-safe chemicals.
    • The best way to get rid of white algae is by letting it leave on its own.

    Introduction To White Algae In Aquariums

    Everyone dreads getting green algae in their aquarium. But when you see something that appears to be white algae showing up, you might be more confused than ever.

    While algae is ugly, it’s a natural part of the ecosystem. However, we like our fish tanks to be perfect so it must go. There are a few reasons why you’re growing white algae over other green or red algae species. To get rid of white algae, you need to understand why it’s growing.

    But first, what is white algae, and how do you identify it?

    What Is It?

    To understand what white algae is, we must understand what it’s not.

    Biofilm In Aquariums

    The term white algae is a misnomer. This name comes from its plant-like appearance that covers aquarium decorations and causes hobbyists headaches. In fact, it’s more likely that white algae is a bunch of filamentous fungus-like organisms instead of true algae; white algae may also be described as white mold.

    But if it looks and acts like algae, then why isn’t it algae?

    Algae is a scientific group of photosynthetic eukaryotic organisms, or living things that have a nucleus and membrane-bound organelles they use to gather energy from the sun. There are many species of known algae with many different varieties growing in freshwater, saltwater, and brackish ecosystems.

    In nature and in the aquarium, species of algae thrive when given plenty of light, nutrients, and little competition. While unwanted in home fish tank setups, algae is a natural part of any aquatic system and aren’t inherently bad. However, it can smuggle other aquarium plants and corals, lessen light penetration, and become unsightly over time. Some algae growth is easy to control, while others quickly overtake an aquarium.

    That being said, there are only three main divisions of algae: Rhodophyta, Chlorophyta, and Heterokontophyta1. Simply put, Rhodophyta is red algae, Chlorophyta is green algae, and Heterokontophyta is largely recognized as brown algae. Though these associated colors don’t always tell the correct species of algae, you can see that there is no white algae mentioned.

    Plants get their green colors from how light interacts with their chlorophyll, or pigments of the plant; different plants produce other pigments, which can result in the red or brown coloring of algae outside of Chlorophyta.

    If the plant does not contain chlorophyll, then it will lack color and be unable to photosynthesize. While some parasitic plant species can survive without chlorophyll, white algae do not fit in this group. Thus, white algae is not considered a plant or a type of algae.

    What Is This Fuzzy Stuff In My Aquarium?

    Have you noticed a thick, white, slimy surface over your new driftwood or other aquarium decorations in your freshwater fish tank? You might be dealing with white algae.

    We established that white algae isn’t actually a type of algae and is, instead, a type of fungus. This means that it doesn’t thrive from high lighting or excess nutrients. Instead, we’ll see that it mostly originates from the availability of carbohydrates.

    Is It Harmful To Fish Or Invertebrates?

    Don’t worry, though! White algae is harmless to aquarium fish and invertebrates and is oftentimes a natural part of the tank’s changing ecosystem. The biggest problem about having white algae in your fish tank is its appearance.

    It’s important to note that there are a few other reasons why your freshwater aquarium has white fuzzy stuff growing in it. Some of which are not as safe or easy to deal with as white algae.

    Why It’s In Your Fish Tank (Causes)

    There are two main causes for white algae growing in your freshwater fish tank. Often, white algae appear around new driftwood and other organic structures placed in the aquarium. However, white algae growth may also appear to come from other aquarium plants or algae.

    New Driftwood

    One of the biggest problems new hobbyists face in their aquariums is the growth of white algae. This can happen simultaneously throughout the nitrogen cycle, with fish or without.

    A few days after adding new driftwood to the aquarium, beginner hobbyists may start to notice an unsightly white coating on their new driftwood. This progresses into a thick layer of white or transparent slime that covers the entire structure. As you can imagine, this can become concerning very quickly.

    This is perfectly natural and to be expected. In fact, there aren’t any ways to prevent it from happening. Even the most popular driftwood treatments, like leaving the pieces out in the sun, boiling them, or preserving them, will likely result in white algae growth.

    Why does white algae grow over new driftwood?

    Hobbyists must remember that everything they put into fish tanks affects the ecosystem. This is especially true when placing organic items into the aquarium, like plants, wood, or decorations, and filter media that have been transferred from another tank.

    In the case of driftwood, unfamiliar organics, , are introduced into the aquarium. The beneficial bacteria that help your fish tank run are determined to keep your aquarium safe from outside threats while also being highly attracted to carbohydrates. As a result, they start to process them and break them down. This results in the growth of white algae fungus and an unnecessary headache for hobbyists.

    Remember, a white algae invasion is not harmful to fish or invertebrates and does not immediately indicate an issue with nutrients or lighting. In about one to four weeks, all white algae should disappear from the aquarium; as quickly as it appeared, it will leave.

    Amano Shrimp Male

    In fact, it’s better to create stability during this time instead of trying to remove the white algae as quickly as possible. But if you really can’t stand the sight of it, then there are a few ways to get rid of white algae before it leaves on its own. These methods include manual removal, introducing a cleanup crew, and dosing aquarium products.

    Manual Removal

    In most cases, persistence and manual removal are the best ways to tackle any algae problem in both freshwater and saltwater aquariums. This holds true for a white algae problem–if you want to be proactive about it.

    We can’t lie. White algae is slimy and messy to remove. Because of this, we strongly recommend removing the affected driftwood from the aquarium and using a toothbrush or other scrubber to lightly detach the algae. Take a bucket of aquarium water from the fish tank to rinse off the driftwood. Remember that there are beneficial bacteria on these pieces of driftwood that you want to disturb as little as possible. Using tap water or other untreated water could kill the present bacteria, leading to even bigger problems than unwanted white algae growth.

    It is likely the white algae will grow back a couple of times more after being removed but will return as less and less every time. To help diminish returns, increase water circulation.

    If removing the white algae while still inside the main fish tank display, it’s strongly recommended to use an aquarium vacuum to help clean up the detached pieces in the water column. Unlike other algae, white algae will not self-propagate when transferred to other parts of the aquarium. Still, it’s recommended to remove any possible decaying organic matter that could lead to other issues.

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    CleanUp Crew

    If you have white algae, you’re most likely in the beginning stages of your freshwater aquarium. At some point or another, you should add a cleanup crew and algae eaters to help keep your aquarium system running.

    A cleanup crew should not be seen as a way to solve the algae problems in your tank, but rather, a natural part of the ecosystem that helps remove decaying organic material before it can start to affect water parameters. Remember that snails and shrimp will not eat fish waste! Although freshwater snails and shrimp are great at what they do, some species can reproduce very quickly and add to the overall bioload of the aquarium.

    It’s true that there are some excellent algae eaters out there, though. Some of the best algae eaters belong to the Otocinclus genus. These fish are hungry for green algae and will clean up a tank in a few days. However, their green appetite can quickly lead to food shortages, so they’re only recommended for more experienced fish keepers. They also won’t take care of a white algae bloom.

    In fact, nothing really eats white algae while it’s developing. Fish and invertebrates will pick at it as it starts to die off, though. And keep in mind that algae eaters will help clean up after the other main cause of white algae: algae die-off. But we’ll get to that in a bit.

    Aquarium Products

    We never recommend using aquarium products to treat algae problems, and especially not to get rid of white algae from the fish tank. But if you’re desperate to get your tank clean and free from white algae, then there are some readily available solutions.

    Hydrogen peroxide is a household item that is very effective at treating algae problems in saltwater and freshwater aquariums. Specifically, spot treat with a mixture of 3 ml of 3% hydrogen peroxide for every 1 gallon of water. Use a syringe or turkey baster to target the affected area while the equipment is off.

    The white algae should start to recede in the next day or so, though several treatments may be needed.

    The other readily available aquarium product is Seachem Flourish Excel. This is a bioavailable organic carbon that acts as an algaecide. The idea is that other plant species outcompete the algae with the added supplement, leaving the algae to die. While this is mainly meant for pest algae, like green hair algae, it has worked with white algae as well.

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    If planning to keep aquarium plants long-term, then Seachem Flourish Excel can be a great supplement even after your algae problem is gone.

    Doing Nothing

    Our favorite method on this list, doing nothing, is one of the best, least expensive, and least time-consuming ways to deal with white algae growth in the aquarium.

    Remember that white algae is the result of beneficial bacteria feeding on new organics, including carbohydrates, entering the ecosystem. This means that these are limited resources that will be depleted over time. In fact, most white algae growth stops in a couple of weeks, with all remaining coverage receding by the end of the month.

    To help speed things up, we recommend continuing to do regular fish tank maintenance, including using an aquarium vacuum. While in the tank, feel free to suck up any loose white algae. Try to remove food residue and other waste on top of the algae to prevent poor water quality.

    Dead Algae

    While white algae is often the result of new driftwood being placed in the tank, it’s not the only reason.

    Sometimes, pieces of dead algae turn white. This is especially true if treating excess growth with chemicals that cause sudden death. Again, there is no reason to try to treat white algae as aquarium fish, and other invertebrates will often eat whatever is leftover. If they don’t, then a well-working mechanical filtration system will clean up the rest.

    There are some occasions when white algae growth actually indicates the growth of the algae. This can be seen in calcareous species of algae, like Halimeda. Halimeda is a saltwater genus of algae that grows a hard, white skeleton underneath its fleshy green cover; when Halimeda dies, the white skeleton may also be exposed, making it the truest species of white algae on this list!

    This growth and receding effect is very similar to that seen on the white tips of corals.

    How To Treat (If It’s the Other Species)

    If the cottony growth isn’t due to driftwood or dead algae, then you might have misidentified the initial problem. While it’s unlikely that a new type of algae appears in your fish tank, stranger things have happened.

    To treat algae, we need to understand what causes it. There are three main influences of algae growth:

    1) Too much light

    2) Excess nutrients

    3) Poor water quality

    Excess Or High Lighting

    Fish tanks need a lot of light, but not too much lighting. They also need a balance of intensity, spectrum, and photoperiod. Unfortunately, algae can be caused by one or all of these factors.

    There are many aquarium lights available for purchase today. Luckily, most models can be customized for the needs of the specific tank, allowing for intensity, spectrum, and photoperiod to be manually adjusted.

    Any adjustments made should be made over long periods of time. Plants need time to adjust to sudden changes in lighting, which can slow their rates of photosynthesis and allow algae to outcompete them.

    For saltwater fish tanks, remember that white, red, and green light highly contributes to algae growth.

    Excess Nutrients

    It’s hard to tell the water and tank conditions of your system if you’re not regularly testing parameters. Even if things are okay one day, the next, you can end up with an algae bloom due to high phosphates and nitrates.

    The best way to prevent excess nutrients in your fish tank is by regularly checking water parameters and performing aquarium maintenance accordingly. Make sure that you stock your aquarium correctly without adding too many fish. Have an adequately sized aquarium filter to help process waste and create water circulation throughout the tank. Remove leftover food and waste as needed.

    Poor Water Quality

    While excess nutrients can cause poor water quality, the quality of your water starts at its source.

    Freshwater aquariums can be filled with tap water as long as algae-causing nutrients, like phosphate and nitrate, are low (and the water is treated for chlorine). Unfortunately, many beginner hobbyists do not check their source water quality, causing them to do more fish tank maintenance that only introduces more excess nutrients.

    A good aquarium setup starts with good aquarium water.

    Fungal Infections

    If you start to notice a white fuzz growing on the body or fins of your fish, you’re most likely dealing with a fungal infection. This can look like a piece of white algae that is stuck to the side of the fish but is indicative of an open wound.

    Fungal infections are often secondary infections that are due to incorrect water parameters. Improving water quality and dosing medications can lead to a full recovery and a completely healthy fish.

    Final Thoughts

    Contrary to popular belief, there is no such this as white algae. But if you see white stuff growing from a new piece of driftwood you put in the tank, you’re most likely dealing with a type of harmless fungus that will leave on its own.

    If you don’t want to wait for it to clear up over the course of a few weeks, then you may manually remove it and keep the tank clean, add algae eaters, or use chemical intervention. We think it’s best to leave it alone, though!


    🌿 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

  • 25 of the Most Beautiful Fish You Can Keep (Freshwater and Saltwater)

    25 of the Most Beautiful Fish You Can Keep (Freshwater and Saltwater)

    After 25+ years keeping fish across freshwater and saltwater setups, I’ve developed a strong opinion on which species are genuinely beautiful versus just hyped. This list covers 25 fish that have actually made me stop and stare. a mix of freshwater and saltwater species, from beginner-friendly to advanced-only. If you’re building a display tank or just looking for inspiration, here’s what I’d put on it.

    In this article, we’ll meet 25 of the most beautiful fish species in the world. And the best part is, all of these fish can be kept in a home aquarium! Read along to learn what makes them beautiful and also whether they are a good choice for your fish tank.

    Let’s get started!

    Key Takeaways

    • Choose your fish based on their looks, but also their needs. Each species needs different water conditions and tank sizes to stay healthy
    • There are beautiful fish for saltwater and freshwater aquariums of every size. Koi fish and goldfish can even thrive in outdoor ponds
    • The most colorful fish come from tropical zones, but there are some cold water species with great colors too

    What Makes A Fish Beautiful?

    They say beauty lies in the eye of the beholder, which means it’s up to each of us to decide what is most attractive. Fortunately, fish come in such an incredible array of shapes, sizes, and colors that there is a species to suit any taste.

    Let’s take a look at some of the features that make some fish so eye-catching.

    Shape

    Fish come in an incredible array of shapes, from the long, cylindrical eel to the square-shaped box fish. There are flat, circular fish like the Discus, diamond-shaped fish like the mono and even triangular species like the angelfish!

    Color

    There is a fish to match any color you can think of, from pitch black to pure white and everything in between. Some fish have every color of the rainbow, while others are highly reflective and iridescent.

    Patterns

    Solid-colored fish are beautiful, but these fascinating creatures also come in various patterns, including spots, stripes, and almost anything you can imagine.

    Fins

    Fish use their fins to propel them through the water and to direct their path. Selective breeding in the aquarium hobby has created beautiful fish with amazing fins that are much longer and larger, but many species have naturally strange and impressive fins. Betta fish and fancy guppies will tend to have the most unique tail varieties of the bunch.

    25 Beautiful Fish – My Top Choices

    Now it’s time to meet 25 of the world’s most beautiful fish species. Each of these fish can thrive in aquariums with the right care, but I’ve included a list of important facts to help you choose a species that will suit your aquarium and skill level.

    The video above is from our YouTube Channel. Our blog post goes into more detail. If you enjoy our content, be sure to subscribe as we post new videos every week!

    Let’s get started!

    1. Japanese Koi

    My Pick!
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    • Scientific name: Cyprinus rubrofuscus
    • Origin: Japan
    • Size: 12 to 36 inches
    • Care level: Intermediate
    • Minimum tank size: Pond
    • Special features: Diverse colors and patterns, rich history
    • Water type: Freshwater, cold water

    Japanese Koi are large pond fish that are usually kept in outdoor ponds. These colorful fish first domesticated about 2500 years ago, and they have been specifically bred for their colors and patterns for more than two centuries.

    Koi Fins

    Koi are usually marked in white, orange, and black, although red and yellow are also common colors. There are hundreds of koi varieties, and the most sought-after varieties can cost up to $1.8 million! Fortunately, you can find beautiful koi for very affordable prices.

    2. Fancy Goldfish

    • Scientific name: Carassius auratus
    • Origin: China
    • Size: 6 to 12 inches
    • Care level: Easy-Intermediate
    • Minimum tank size: 20 gallons
    • Special features: various, colors, fin types, patterns, and body shapes
    • Water type: Freshwater, cold water

    The fancy goldfish is another beautiful fish with a long history in the fishkeeping hobby. These beautiful fish were already bred and displayed a thousand years ago in China.

    Today, you can find goldfish in homes and pet stores worldwide. The most common color is bright orange, but many goldfish have black, white, red, yellow, brown, and gray markings too.

    3. Bettas

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    • Scientific name: Betta splendens
    • Origin: Thailand
    • Size: 2.5 inches
    • Care level: Easy
    • Minimum tank size: 5 gallons
    • Special features: Amazing colors, patterns, and fins
    • Water type: Freshwater, tropical

    Like Japanese koi and goldfish, betta fish have been bred into various amazing colors and patterns. However, these gorgeous fish come in a much wider range of colors.

    Betta fish are highly aggressive, which is why they are also called Siamese fighting fish. They were first kept for fighting, a cruel sport that is illegal in most parts of the world today. However, betta fish are still as popular as ever because they make amazing pets for both beginners and experienced aquarists alike.

    4. Discus

    Discus In An Aquarium
    • Scientific name: Symphysodon spp.
    • Origin: Amazon River Basin, South America
    • Size: 6 – 8 inches
    • Care level: Intermediate
    • Minimum tank size: 55 gallons
    • Special features: Electric colors and flat, disc shape
    • Water type: Freshwater, tropical

    Discus fish are stunning species from South America that have been bred to show a range of amazingly vibrant colors, including neon blue, red, green, and pearl shades.

    Discus fish are not only one of the most colorful fish in the world, but they have a really eye-catching shape too. As their name suggests, these popular freshwater aquarium fish have circular, flattened bodies.

    5. Fancy Guppies

    • Scientific name: Poecilia reticulata
    • Origin: South America
    • Size: 1.2 to 2.4 inches
    • Care level: Easy
    • Minimum tank size: 10 gallons
    • Special features: Bright colors, interesting patterns, long and colorful fins
    • Water type: Freshwater, tropical

    Guppies are one of the most popular aquarium fish, so it’s easy to forget just how beautiful these peaceful fish really are. These hardy fish are super easy to breed, and they are a wonderful first species for anyone new to the fishkeeping hobby.

    Male guppies are smaller but much more colorful than their female counterparts. These cute little fish can be pretty much any color, and they usually combine different shades and patterns, especially on their tail and dorsal fin.

    Check out my guide to 21 amazing types of guppies to learn more about this beautiful species!

    6. Freshwater Angelfish

    <a href=Altum Angelfish in Planted Tank” class=”wp-image-551860″/>
    • Scientific name: Pterophyllum spp.
    • Origin: South America
    • Size: 6 inches
    • Care level: Easy to intermediate
    • Minimum tank size: 29 gallons
    • Special features: Triangular shape and long fins
    • Water type: Freshwater, tropical

    The freshwater angelfish is one of the most elegant fish in the world. These stunning South American Cichlids don’t have the greatest range of colors, but their incredible body shape and long dorsal and anal fins have made them incredibly popular in the aquarium trade.

    There are many types of angelfish, ranging from pure white to striped and even koi-patterned varieties. These fish are great for a peaceful community tank, although they need a deep aquarium to accommodate their long fins.

    7. Cardinal Tetra

    • Scientific name: Paracheirodon axelrodi
    • Origin: South America
    • Size: 2 inches
    • Care level: Intermediate
    • Minimum tank size: 15 gallons
    • Special features: Neon blue and red horizontal stripes
    • Water type: Freshwater, tropical

    The cardinal tetra is a colorful schooling fish that looks amazing in aquarium community tanks and planted aquascapes. These fish have a prominent red stripe from their head to their tail and a neon blue stripe that glows in the water.

    Cardinal tetras are a great choice for moderately experienced aquarists looking to add some color to a community tank because they get along great with other smaller fish.

    8. Chili Rasbora

    • Scientific name: Boraras brigittae
    • Origin: Southeast Asia
    • Size: 0.7 inches
    • Care level: Easy
    • Minimum tank size: 5 gallons
    • Special features: Miniature size and bright red color with a bold horizontal stripe
    • Water type: Freshwater, tropical

    Small fish can be beautiful too, and the tiny chili rasbora is a perfect example. These tiny schooling fish are amazing to watch, especially in a heavily planted aquarium.

    The chili rasbora is also known as the mosquito rasbora, and they are one of many similar micro fish species. These little guys are great for fishkeepers with only space for a 5 to 10-gallon aquarium.

    9. Celestial Pearl Danio

    • Scientific name: Celestichthys margaritatus
    • Origin: Myanmar, Southeast Asia
    • Size: 0.8 inches
    • Care level: Intermediate
    • Minimum tank size: 10 gallons
    • Special features: Bright orange fins and ‘galaxy’ spotted body
    • Water type: Freshwater, tropical

    The Pearl Danio” data-lasso-lid=”1063218″>Pearl Danio” data-lasso-lid=”1063218″>celestial pearl danio is another beautiful nano fish that has become incredibly popular in the aquarium community. Affectionately known as the CPD, these tiny freshwater shoaling fish are peaceful creatures that thrive in well-maintained, planted tanks.

    10. Gold Barbs

    Gold Barbs Profile
    • Scientific name: Barbodes semifasciolatus
    • Origin: Southeast Asia
    • Size: 2.5 to 3 inches
    • Care level: Easy
    • Minimum tank size: 20 gallons
    • Special features: Golden body with black-spotted scales
    • Water type: Freshwater, cool/tropical

    The golden barb is a beautiful fish that has been bred to show the amazing bright colors that make them so popular today. The wild form of this species has a greener appearance but is nevertheless a gorgeous fish.

    11. Rainbowfish

    Lake Tebera Rainbowfish
    • Scientific name: Melanotaenia spp., Iriatherina spp. etc.
    • Origin: Australia, New Guinea, Madagascar
    • Size: 2 to 8 inches
    • Care level: Easy to intermediate
    • Minimum tank size: 20 to 30 gallons
    • Special features: Various bright colors and long fins
    • Water type: Freshwater, tropical

    Rainbow fish are colorful members of the Melanotaeniidae family. These popular freshwater community fish come in many shapes and sizes, from the elegant threadfin rainbowfish with its long dorsal and anal fins, to the Boeseman rainbowfish with its bright blue and yellow shades.

    12. Dwarf Gouramis

    Dwarf Gourami in Aquarium
    • Scientific name: Trichogaster lalius
    • Origin: India, Bangladesh, Pakistan
    • Size: 2.4 to 3.5 inches
    • Care level: Easy to intermediate
    • Minimum tank size: 10 gallons
    • Special features: Red and neon blue colors, long, thread-like pelvic fins
    • Water type: Freshwater, tropical

    The dwarf gourami is beautiful little fish that comes in various breeds. Flame gouramis, for example, have bright orange bodies and a neon blue dorsal fin, while the powder blue breed has an electric blue body with vertical red stripes.

    Dwarf gouramis make wonderful pets and will thrive in a planted tank of ten gallons or larger. They are peaceful creatures that can be kept with various other fish like corydoras, rasboras, barbs, and many others in a community tank.

    13. Ram Cichlids

    Blue Ram Cichlid in Planted Tank
    • Scientific name: Mikrogeophagus ramirezi
    • Origin: Amazon River Basin, South America
    • Size: 2 to 3 inches
    • Care level: Intermediate
    • Minimum tank size: 20 gallons
    • Special features: Neon colors and bold, upright fins
    • Water type: Freshwater, tropical

    German blue rams are dwarf cichlids with some of the most vibrant colors in the hobby. There are several breeds, with colors that vary from solid bright blue to specimens with a yellow body and blue spots.

    Ram cichlids are popular fish that you can find at many fish stores, but they are not ideal for beginners. These stunning fish require warmer water than many other species, and very high water quality is essential.

    14. Sailfin Molly

    Sailfin Molly in Aquarium
    • Scientific name: Poecilia latipina
    • Origin: United States and Mexico
    • Size: 4 to 5 inches
    • Care level: Easy
    • Minimum tank size: 30 gallons
    • Special features: Huge sail-like dorsal fin
    • Water type: Freshwater, brackish water

    The sailfin molly is a pretty fish with a really unusual feature. Males have huge dorsal fins, almost like the sail on a yacht! Sailfin mollies come in many colors and patterns, from pure white to black, and even bright orange.

    Sailfin mollies are a great choice if you have naturally hard water. These omnivorous fish are livebearers, so they are really easy to breed in the home aquarium.

    15. African Cichlids

    African Cichlids in a Rock Aquarium
    • Scientific name: Various
    • Origin: East Africa
    • Size: 1.5 inches to 3 feet
    • Care level: Easy to advanced
    • Minimum tank size: 55 gallons for most species
    • Special features: Amazing variety of colors, patterns, and shapes
    • Water type: Freshwater, tropical

    African Cichlids are among the most colorful freshwater fish in the world, and also some of the most beautiful. These fish range in size from tiny species that live in empty snail shells to large predators that hunt and eat other fish.

    Most African cichlid species come from the great lakes region of East Africa where they live in huge lakes like Victoria, Tanganyika, and Malawi. These stunning fish come in practically any color you can imagine, from the shocking electric yellow lab to the multi-colored peacock cichlid.

    Of course, it’s very important to research the needs of any fish before adding it to your aquarium. Most African cichlids need high-pH water to thrive, and their tank mates must be chosen carefully because these guys get very territorial.

    16. Killifish

    Gardneri Killifish in Planted Tank
    • Scientific name: Various
    • Origin: Every continent except Australia and Antarctica
    • Size: 1 to 6 inches
    • Care level: Easy
    • Minimum tank size: 10 to 20 gallons
    • Special features: Multicolored fish with interesting body shapes
    • Water type: Freshwater, tropical

    There are over a thousand killifish species on the planet, and many have spectacular colors and patterns. These small freshwater fish are adapted to live in shallow waterbodies, and some even live in puddles that dry up each year!

    Sadly, these species have a pretty short lifespan, but their eggs live on, even surviving, becoming partially dry before the next rains come.

    Many species are available in the aquarium trade, and they make fascinating pets that don’t need a large tank. The gardneri panchax, golden wonder, and clown killifish are all amazing fish that you can keep in your own tank.

    17. Flowerhorn Cichlid

    Flowerhorn Cichlid At Local Fish Store
    • Scientific name: Hybrid
    • Origin: First bred in Southeast Asia
    • Size: 12 to 16 inches
    • Care level: Intermediate
    • Minimum tank size: 75 gallons
    • Special features: Bright colors and a huge nuchal hump on the male’s forehead
    • Water type: Freshwater, tropical

    The flowerhorn cichlid is one of the strangest-looking freshwater fish in the world, but also one of the most interesting to keep. These fish are hybrids bred for the pet trade by crossing two or more Central American cichlid species.

    Flowerhorn cichlids are available in various colors and patterns, including combinations of bright red, neon blue, yellow, pink, and black. Their most distinctive feature is the huge hump on the forehead of adult males, which can grow bigger than their heads!

    Flowerhorn cichlids have big personalities, and they are very aggressive toward other fish species. These colorful freshwater fish can also be aggressive toward their owners, but they usually make very personable pets.

    18. Severum Cichlid

    Severums Fish
    • Scientific name: Heros spp.
    • Origin: Amazon River, South America
    • Size: 8 to 12 inches
    • Care level: Intermediate
    • Minimum tank size: 55 gallons
    • Special features: Variety of beautiful colors and patterns
    • Water type: Freshwater, tropical

    Severums are large but relatively peaceful South American cichlids. They have rounded bodies with big eyes and small mouths. There are a handful of severum cichlid species, and several breeds to choose from, including gold, red-spotted, red-shouldered, and turquoise color morphs.

    Choose these fish if you want a large, beautiful cichlid for a peaceful South American community tank. They can also hold their own with oscar fish and others with a more aggressive nature.

    19. Arowana

    Arowana Fish
    • Scientific name: Osteoglossum bicirrhosum
    • Origin: South America
    • Size: up to 3 feet
    • Care level: Advanced
    • Minimum tank size: 300 gallons
    • Special features: Huge, silvery scales
    • Water type: Freshwater, tropical

    The silver Arowana is an incredible tropical fish from South America that most fishkeepers can only dream about. Sure, it’s easy enough to purchase a young fish, but providing enough space for it as an adult is a challenge!

    However, let’s not take anything away from the stunning beauty of these animals. Silver Arowanas are strange and stunning to look at. Their massive scales gleam silver in good light, and their huge eyes and mouth give them a distinctive look.

    20. Clownfish

    Editor’s Choice
    Tank Raised Clownfish

    Best Choice For Reef Tanks!

    Clownfish are hardy, full of personality, and are safe for all corals. They are an icon for any saltwater tank

    Click For Best Price Purchase ORA Clownfish
    • Scientific name: Amphiprion spp., Premnas spp. etc.
    • Origin: Coral reefs in the Indo-Pacific region
    • Size: 3 to 6 inches
    • Care level: Easy
    • Minimum tank size: 20 gallons
    • Special features: bright orange color with bold black and white stripes
    • Water type: Saltwater, reef safe

    The clownfish is one of the most recognizable fish in the world, thanks to its leading role in the 2003 movie ‘Finding Nemo’. These cute fish live with sea anemones in the wild, protecting them from larger predators.

    There are many clownfish species, with colors ranging from bright yellow to maroon and even black and white. However, the ocellaris clownfish (Nemo) remains the most popular and is a great species for newcomers to the saltwater fish keeping hobby.

    These peaceful fish can be kept in nano-reef tanks as small as 20 gallons. They are easy to feed, and you can even breed them yourself.

    21. Marine Betta

    Marine Betta in Fish Tank
    • Scientific name: Calloplesiops altivelis
    • Origin: Indo-pacific Ocean
    • Size: 8 inches
    • Care level: Easy
    • Minimum tank size: 50 gallons
    • Special features: Black ground color with beautiful starry spots.
    • Water type: Saltwater, reef compatible with caution

    The marine betta, or comet as they are also known, is a fascinating and beautiful fish with extensive flowing fins. Their dark brown or black bodies are covered in small white or blue spots and they have one large spot at the base of their dorsal fins.

    This large spot has a very interesting function. Marine bettas jam their heads into holes in the reef when a predator swims by. The shape of their fins makes these clever fish look like the head of a large moray eel, and few predators will tangle with those dangerous creatures!

    Marine bettas are nocturnal fish, but they can make great a great addition to a tropical saltwater aquarium. They are peaceful fish, but they will snack on smaller fish and crustaceans.

    22. Large Marine Angelfish

    Emperor Angelfish
    • Scientific name: Pomacanthus spp.
    • Origin: Indian, Pacific, and Atlantic Oceans.
    • Size: 8 to 15 inches
    • Care level: Intermediate
    • Minimum tank size: 55 – 100 gallons
    • Special features: Bold colors and interesting body shapes
    • Water type: Saltwater, not reef safe

    Marine angelfish are some of the most popular saltwater aquarium fish in the world. These dazzling fish come from tropical and subtropical waters of the Atlantic, Indian, and Pacific Oceans. Angelfish change color as they mature, and the juveniles can be especially beautiful.

    Large marine angelfish come in various colors, often with bright yellow and blue stripes like the Emperor Angelfish. One species, the regal angelfish, takes this color scheme to an extreme level with the inclusion of a yellow tail and dark blue dorsal fin.

    23. Dwarf Angelfish

    Coral Beauty Angelfish
    • Scientific name: Centropyge spp.
    • Origin: Pacific, Indian, and Atlantic oceans
    • Size: 3 to 4 inches
    • Care level: Intermediate
    • Minimum tank size: 30 gallons
    • Special features: Amazing colors and compact size
    • Water type: Saltwater, reef compatible with caution

    Dwarf angelfish come in a staggering variety of colors, from the pitch-black midnight angelfish to the vibrant flame angelfish with its bright orange color and black vertical bars.

    These beautiful aquarium fish can be kept in tanks as small as 30 gallons, although some will do better in 55 gallons.

    24. Reef Triggerfish (Blue Throat, Niger, Crosshatch)

    Crosshatch Triggerfish in Aquarium
    • Scientific name: Odonus spp., Xanthichthys spp. etc
    • Origin: Caribbean and Indo-Pacific
    • Size: 9 to 14 inches
    • Care level: Easy to moderate
    • Minimum tank size: 125 gallons
    • Special features: Strange body shape and amazing colors
    • Water type: Saltwater

    Reef triggerfish species like the bluethroat, niger and crosshatch triggerfish make a stunning addition to larger saltwater aquariums. These beautiful fish have very odd proportions with large heads and tiny mouths.

    Their small mouths are what make these species safer for a reef tank, but bear in mind that no triggerfish is completely reef safe. These fish have sharp teeth, and they love to feed on smaller invertebrates.

    There are many amazing species, but the crosshatch triggerfish is particularly attractive with diagonal black perpendicular lines separating its scales. Each scale is further accented by a spot of blue pigment for a dazzling display.

    25. Clown Triggerfish

    Clown Triggerfish in Reef
    • Scientific name: Balistoides conspicillum
    • Origin: Tropical and subtropical waters of the Pacific and Indian Ocean
    • Size: 1′ 8″
    • Care level: Intermediate
    • Minimum tank size: 300 gallons
    • Special features: Striking black fish with round white spots and a yellow mouth
    • Water type: Saltwater

    The clown triggerfish is one of the most vibrantly marked fish in the sea. Their bold black and white coloration is accented with a yellow honeycomb pattern around the dorsal fin and a small yellow mouth filled with sharp teeth.

    The clown triggerfish is a spectacular saltwater species with an aggressive nature. These beautiful fish can be kept with some other aggressive fish species, but unlike the other triggerfish in this list, clowns are not suggested for a reef tank.

    FAQs

    Which species have pretty tails?

    There are many fresh and saltwater fish with beautiful tails, but guppy fish and betta fish probably share the first-place prize in this category. These fish have the most amazing flowing tails that really move in the water!

    Which is the most popular species on this list?

    The goldfish is the most popular pet fish in the world. These beautiful fish have been kept for centuries, and they are still just as popular as ever!

    Goldfish are not the only ultra-popular aquarium fish on this list, though. The fancy guppy and the siamese fighting fish are just as recognizable.

    What is the most unique-looking species on the list?

    The flowerhorn cichlid is probably the most unique-looking fish in our top 25. These strange hybrid fish really stand out with their huge bulging foreheads!

    Final Thoughts

    Fish are some of the most beautiful creatures on the planet, period. The variety of species available to the modern hobbyist means there’s a species out there to suit everyone’s tastes.

    Of course, there are many more than just 25 beautiful fish types worldwide, but these are certainly my favorites!

    Which fish do you think is most beautiful? Share your favorites in the comments below! Give us a sub on your YouTube Channel if you want to see some of our video content.

  • Balloon Molly Fish Care Guide: The Honest Truth About This Breed

    Balloon Molly Fish Care Guide: The Honest Truth About This Breed

    The Balloon Molly has a compressed spine. That is not a feature. It is a deformity bred into the fish for aesthetics. These fish have shorter lifespans, swim awkwardly, and struggle to compete for food.

    Balloon mollies are popular. That does not make the breeding behind them right.

    The biggest challenge with Balloon Molly Fish is not keeping them alive. It is managing how fast they multiply.

    The Balloon Molly Fish breeds constantly and lives 3 to 5 years. You need a plan for fry before you buy your first pair, or your tank will be overrun within months.

    Livebearers teach you more about population management than any textbook ever will.

    ASD Difficulty Rating: Tier 1 – Beginner

    Balloon mollies are a fancy balloon-body variant of regular mollies with the same care requirements. They are hardy livebearers that prefer hard, alkaline water and breed prolifically. Manage the fry population.

    Table of Contents

    In this article, we’ll explore other areas of Balloon Molly fish and how it enhances the beauty of your aquariums.

    What Most Care Guides Get Wrong About Balloon Molly Fish

    Want color and activity without breeding headaches? Get all males. Want a self-sustaining colony? Get a proper male-to-female ratio and a grow-out tank.

    A lot of guides suggest Balloon Molly Fish can go in practically any nano tank. That is technically true, but a cramped setup leads to stress and shorter lifespans. Even small fish benefit from a bit of extra space and stable water chemistry that comes with slightly larger volumes. Another thing guides gloss over is temperament. Balloon Molly Fish 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 Balloon Molly Fish

    Breeding is not optional. It is automatic. If you have males and females, you will have fry within weeks. Most new owners are not prepared for the population explosion. You need a plan, whether that is a grow-out tank, selling to a local store, or keeping predators that naturally control numbers.

    Water hardness matters more than people realize. Livebearers come from hard, alkaline water. Keeping them in soft, acidic conditions leads to chronic health problems, fin clamping, and shortened lifespans. If your tap water is soft, livebearers are not ideal unless you buffer the water.

    Male aggression is constant. Males chase females relentlessly. Without a ratio of at least two females per male, the females get stressed, stop eating, and weaken. Overcrowding males does not solve this. It makes it worse.

    Biggest Mistake New Owners Make

    Buying one male and one female thinking it will be manageable. Within three months you have 30 to 50 fish in a tank designed for 10. Always plan for breeding output before you buy your first pair.

    Expert Take (Mark Valderrama, AquariumStoreDepot)

    If you are keeping livebearers, you are a breeder whether you planned to be or not. Accept it early and have a plan for the fry. That single decision prevents 90% of livebearer problems.

    Key Takeaways

    • The balloon belly Molly fish is a result of selective breeding, which was specifically bred to have scoliosis. 
    • These fish have a deformity that causes arched back and swollen, protruding belly
    • They are smaller in size and make great community tank fish but should never be kept with large aggressive fish 
    • They have a relatively shorter lifespan than other molly fish species

    Fish Species Overview

    Scientific NamePoecilia sphenops
    Common NameBalloon Molly, Balloon Belly Molly, Belly Mollies, Pot Belly Molly
    FamilyPoecilia Latipinna
    OriginNorth and Central America
    DietOmnivore
    Care LevelEasy
    ActivitySlow
    Lifespan3 to 5 years
    TemperamentPeaceful
    Tank LevelAll levels
    Minimum Tank Size10 gallons for a single fish
    Temperature Range75°F to 82°F
    Water Hardness10-25 dGH
    pH Range7.5 to 8.5
    Filtration/Water FlowSlow moving
    Water TypeFreshwater, tropical fish
    BreedingLivebearers 
    Difficulty to BreedEasy
    CompatibilityCompatible with peaceful community fish
    OK, for Planted Tanks?Yes

    Classification

    Taxonomic RankClassification
    Common NameBalloon Molly
    Scientific NamePoecilia latipinna (selectively bred)
    OrderCyprinodontiformes
    FamilyPoeciliidae
    GenusPoecilia
    SpeciesP. Latipinna (variant)

    What Are They?

    Balloon Mollies (Poecilia latipinna) are livebearers. Live-bearing fish species are those in which female balloon mollies give birth to live baby balloon mollies. These fish species are native to Central America and Mexico. Like many other live-bearing fish species, Belly mollies grow very quickly and reach maturity at the age of 3 months. This molly is a hybrid breed of the original molly fish.

    Origin And Habitat

    The Balloon Molly fish originates from North and Central America. Like Guppies, Platies, and Swordtails, these fish species also belong to the family Poeciliidae. Many aquarists believe the origin of Balloon Molly is the Gulf of Mexico, especially from the brackish water of Texas, Louisiana, and Mexico.

    Chances are, they are found in the freshwater streams and rivers in those regions. Today, Balloon Molly is a popular aquarium fish that is widely kept and enjoyed in the fishkeeping world because they are vibrant, beautiful, hardy fish and easy to care for.

    Appearance

    The Balloon belly Molly fish are small fish with a beautiful, colorful appearance and a unique body shape. Their body shape stays true to their name because these fish species are balloon shaped. They have round bellies and small heads. Their bodies are covered in shiny scales that showcase a subtle metallic but graceful luster.

    Balloon Molly in Fish Tank

    The Balloon belly mollies are most commonly found in black and orange colors. However, the color variety in these ballon mollies is diverse. They is found in hues of silver, gold, and green. The dorsal fin of Pot belly mollies is large, running through the top of their body. They also have a small present near their tail.

    The difference between male balloon mollies and Balloon Molly females is in their bodies. The male fish are smaller and slimmer than female mollies. Male fish also have modified anal fins that fertilize the females during breeding. Comparatively, female mollies are bigger in size and have round anal fins.

    Common Varieties (Types)

    The most common types of Balloon Molly are black and orange. However, the beauty of these aquarium fish is not limited to these colors. There are several varieties of Balloon Molly that can enhance the beauty of your home aquariums.

    Black

    They are majorly black in color, with rounded bodies and small heads. Their distinctive appearance gives them the shape of a balloon. They also have a shiny metallic sheen on their bodies that makes them stand out in your aquariums.

    Dalmatian

    As the name suggests, the Dalmatian ballon mollies have pearl-white or cream-colored bodies with black spots all over, giving them a Dalmatian-like appearance.

    Gold Pot Belly

    The bodies of hold pot belly Molly are yellowish-golden with a metallic shine. The Gold variety is very popular due to its bright, lustrous color and easy-for-care nature.

    Silver Belly

    Silver belly balloon mollies are silver in color with a metallic shine. When they swim, they reflect light that looks beautiful and adds a unique touch to your aquariums.

    Lyretail Fish

    Unlike other fish, the Lyretail Balloon mollies have a lyre-shaped caudal fin that is longer and flowier than other fish species.

    Marble

    The marbled and multicolored variants of fish species have a beautiful multicolored body with patterns of black, white, and orange colors that resemble the marbles. Hence, the name. The intensity of the colors of Marble largely depends on other factors such as diet, water temperature, water parameters, and more.

    Lifespan

    Unfortunately, the lifespan of Balloon Mollies is short compared to other fish species. The average lifespan is around three to five years. One major reason that contributes to the short life expectancy is selective breeding. Also, their large bellies make it difficult for them to swim, so they are slow swimmers and slow feeders.

    The lifespan of Balloon Molly depends on water conditions; they thrive in the freshwater tank because brackish or saltwater makes them susceptible to fish diseases.

    Average Size

    Want color and activity without breeding headaches? Get all males. Want a self-sustaining colony? Get a proper male-to-female ratio and a grow-out tank.

    Balloon mollies are small fish, growing around 3 to 4 inches in length. Also, the size of ballon mollies depends on their diet, water temperatures, genetics, and Tank setup.

    In general, female balloon mollies are larger than males and has round bellies with more prominent anal fins.

    Balloon Molly Fish Care

    Fortunately, as pretty as they seem, balloon Molly is peaceful fish that is easy to keep in a freshwater tank. They are also great for beginners in the aquarium hobby.

    However, you should always care for their aquarium conditions and maintain their ideal water parameters to keep them happy and thriving.

    Tank Setup

    As mentioned earlier, balloon mollies are not challenging species. They need their ideal water conditions and a properly balanced diet to thrive in your fish tank. Also, some basic aquarium equipment, such as filters and aquarium heaters, are essential.

    Tank Size

    Though Balloon Mollies are small fish species, they need ample space for swimming as they are active fish. Thus, a fish tank of 10 gallons is the bare minimum for Ballon Mollies. If you’re keeping more than one fish, then consider adding 2 to 3 gallons of aquarium water per fish to keep them entertained and happy.

    Remember, providing enough swimming space and a balanced diet will help your Balloon Mollies grow to their best potential. If possible, go over 10 gallons to maintain stable water conditions and provide more free swimming space to your finned pals.

    Water Parameters

    The tank water of Balloon Mollie’s tank should be slightly alkaline with a pH of around 7.5 to 8.5. The ideal water temperatures are 75°F to 82°F. Balloon Molly fish prefers water hardness of around 10-25 dGH.

    I also advise performing regular water changes with 10% to 20% of the tank volume to keep your tank water healthy and free of bacteria.

    Lighting

    For the lighting, keep it lightly dim as Balloon Molly fish do not appreciate high-intensity lighting. They are naturally brackish fish and prefer a lower-light environment. Also, consider a lighting schedule of no more than 12 hours followed by 12 hours of darkness.

    Choose aquarium lights that are appropriate for your Balloon Molly and live plants. I recommend installing adjustable LED lights to avoid algae growth.

    Aquatic Plants

    Balloon Molly fish appreciates a heavily planted aquarium with lots of hiding spots. Therefore, it’s crucial to add live plants to your fish tank. The best aquatic live plants for balloon mollies are low light plants such as:

    1. Java fern
    2. Anubias
    3. Amazon Sword
    4. Java moss
    5. Water sprite

    Tank Decorations

    Balloon Mollies love hiding places and swimming space. Therefore, a well-decorated tank is crucial for their health. You can use rocks and driftwood to create hiding places and a natural-looking environment. Also, caves and tunnels are made of aquarium-safe materials and are an excellent option for creating fun hiding places. Besides, you can add other items, such as a few decorative rocks, ceramic statues, and fake corals, to add visual aesthetics.

    Budget Option
    Black Lava Rock

    Budget Option

    Great choice for budgets. Won’t alter your chemistry and provides housing for beneficial bacteria

    Click For Best Price

    Substrate

    Balloon mollies enjoy sandy substrates as they are easy to clean and never hold debris. You can also use gravel instead of sand or a combination of both. In any case, be mindful of the depth of the substrate, especially for a planted tank. The depth of your substrate should be no less than 2 to 3 inches.

    Tank Maintenance

    Proper tank maintenance is the key to keeping your fish’s health in optimal condition. Thus, regular water changes should be done to maintain the water quality. Also, water changes of 20% to 30% are recommended in a week to get rid of toxins and fish waste.

    If you’ve installed a filter, make sure to clean it regularly and replace filter media. I also advise installing an aquarium thermometer to monitor the water temperature and pH to prevent stress and illness in your fish.

    Lastly, do regular water testing to rule out any problems with the water quality and keep your tank a safe place for your balloon Mollies.

    Community Tank Mates

    Balloon belly mollies are small, peaceful fish that can live with other species with the same temperament peacefully. However, avoid keeping them with larger, active, and aggressive fish, as balloon mollies are slow swimmers and slow eaters. The larger, more aggressive fish might bully and harm your little belly mollies.

    Platy Fish

    Here are the following community tank mates that are ideal for keeping with your balloon mollies.

    1. Guppies
    2. Platies
    3. Swordtails
    4. Tetras (Neon tetras, cardinal tetras)
    5. Corydoras

    Breeding

    If you want to breed balloon mollies, I’ve some great news for you.

    Breeding balloon mollies in an aquarium is not a challenging task, provided that you’ve given them the right meaty foods, proper aquarium size, and ideal water quality conditions.

    Balloon Mollies are also very peaceful fish, ideal for community tanks. However, they eat their young ones. Therefore, it’s best to separate Molly’s babies from their parents. The best part is the female Molly is able to reproduce 40 to 50 tiny babies. Thus, breeding becomes a breeze. Also, your breeding tank should have live plants to maintain the’s health and provide your fish with lots of hiding places.

    Here are some of the steps you can take to breed Balloon Mollies (video source):

    1. It’s advisable to prepare a separate breeding tank where the aquarium size should be at least 30 gallons. Also, set up an aquarium heater, filter, and good lighting to encourage healthy breeding.
    2. Pick your best male and female pair and introduce them gradually into the breeding tank. While choosing the breeding pair, make sure the male is smaller in size than the female Molly.
    3. Provide them with protein-rich food, including live or frozen food such as frozen brine shrimp, to ensure proper health.
    4. Once the breeding pair is ready, mating will take place naturally. Balloon mollies are livebearers. After the female is fertilized, she will carry the fry until they are ready to be born.
    5. When the female Molly is pregnant, it is advisable to separate the males and females to avoid aggression towards the Molly fry.
    6. After 60 days or so, the female Molly gives birth to Molly fry. The initial fry diet is crushed flake food, baby Brine shrimp, and commercial fry food. The frequency of meals should be 2-3 times a day.
    7. Once the fry grows, they are moved back to the main tank.

    Food And Diet

    Balloon belly Molly are omnivores that prefer a simple but protein-rich diet. In captivity, you can feed them a balanced diet including flakes and pellets, live foods, or frozen foods such as bloodworms, shrimps, daphnia, and mosquito larvae; you can also feed them vegetables such as spinach, zucchini, or spirulina flakes.

    I also advise feeding algae wafers or pellets in their diet to mimic their natural behavior. And fulfill their instincts.

    Common Health Problems

    Though Balloon mollies are hardy fish and easy to care for, even for beginner fish keepers, there are times when this fish is highly susceptible to diseases and illness. The common health problems of balloon mollies are:

    Ich

    Ich is categorized by small white spots on the fish’s skin and fins due to a parasitic infection. Ich is highly fatal if left untreated.

    Fin Rot

    Fin rot is a bacterial infection in which the affected fish has frayed, ragged fins. 

    Swim Bladder Disease

    Poor water quality, bacterial infections, poor hygiene, or overfeeding cause swim bladder disease. The affected fish show erratic swimming behaviors and float to the tank’s surface or may sink to the bottom of the tank.

    Dropsy

    Dropsy results from a bacterial infection that collects fluid in the fish’s body. The diseased fish seems bloated and well-fed. Dropsy is a fatal disease that might lead to a slow death if not treated properly.

    Velvet Disease

    Velvet disease is caused by a parasite that causes lethargy, loss of weight, loss of appetite, and difficulty in swimming or breathing. 

    FAQS

    How Many Should Be Kept Together?

    The Balloon Molly is a peaceful community tank fish that enjoys a group of at least 3 to 5 fish species.

    Are They Hard To Keep?

    No, Balloon Mollies are easy to keep and highly adaptable fish. But there are certain requirements to keep them happy and thriving, including their ideal tank size, water temperature, water parameters, live plants, and more.

    Do They Need A Heater?

    Yes, Belly mollies need a heater since they are tropical fish that need a stable water temperature of around 72-82°F.

    How Many Should Be Kept Together?

    As many balloon mollies as you want since they are social and peaceful fish species. However, consider the tank size and avoid overcrowding the tank. 

    What Temperature Do They Like?

    Balloon belly Molly is a tropical freshwater fish that prefers temperatures around 72-82°F. 

    What Size Tank Do They Need?

    Balloon belly Molly are small fish, but they need ample swimming space and lots of hiding places. Therefore, a tank of around 10 gallons or more is required to keep them happy.

    Do They Breed Easily?

    Yes, balloon mollies are easy to breed in captivity. However, you should provide them with a separate breeding tank catering to all their needs to ensure successful and healthy breeding.

    Hard Rule: The balloon body shape is a selective deformity that compresses internal organs. These fish have shorter lifespans and higher disease susceptibility than standard mollies. If health is the priority, choose standard mollies instead.

    Is the Balloon Molly Right for You?

    Good Fit If:

    • You appreciate the unique rounded appearance and are comfortable with the tradeoffs
    • You want a peaceful, easy-going community fish for a 20+ gallon tank
    • You already keep mollies and want a visually distinctive variant
    • You understand and accept that deformity-line fish live shorter lives

    Avoid If:

    • You want the hardiest, longest-lived version of a molly – standard mollies are significantly more robust
    • You plan to breed – balloon body deformities pass to offspring and worsen over generations
    • You have ethical objections to fish bred for physical deformities
    • You want a fish that can be kept with standard hard water parameters without extra attention to health

    Final Thoughts

    Balloon belly Molly is a fancy version of the regular mollies. However, they are smaller in size, with a shorter lifespan, and have rounder bellies with arched backs and extended dorsal fins. By the looks and overview of this fish, you may misunderstand it as one of those “high-maintenance fish.” However, they are easy to care for, peaceful, and super hardy fish, selectively bred to adorn your home aquariums.

  • Hillstream Loach Care Guide: High-Flow, Cool-Water Requirements Explained

    Hillstream Loach Care Guide: High-Flow, Cool-Water Requirements Explained

    ASD Difficulty Rating: Tier 2 – Intermediate

    Hillstream loaches require very high water flow, high oxygenation, and cool temperatures (65-75 degrees F/18-24 degrees C). They are specialized fish that cannot thrive in standard community tank setups.

    Table of Contents

    The Hillstream Loach needs fast-moving, oxygen-saturated water. This is not optional. Without strong current from a powerhead or river manifold, it will slowly suffocate even in a well-filtered tank. Standard tropical setups are fundamentally wrong for this species. Build the right environment or do not buy the fish.

    If you can’t feel the current by holding your hand in the tank, it’s not enough flow for a hillstream loach.

    What Most Care Guides Get Wrong About Hillstream Loach

    Most guides give you a cookie-cutter care sheet for Hillstream Loach 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. Hillstream Loach 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 Hillstream Loach

    The hillstream loach is not a tropical fish and it does not belong in a standard community tank. It needs water temperatures between 65 and 75F with strong, oxygen-rich current. A standard aquarium filter does not provide enough flow. You need a powerhead, a river manifold, or a specialized hillstream setup to keep this fish properly.

    Most hillstream loaches sold in pet stores die within a year because they are kept in warm, still water. The fish is not fragile. The setup is wrong. In a properly configured coolwater tank with strong flow and smooth rocks, hillstream loaches are hardy and long-lived.

    They eat biofilm and algae, not fish food. A hillstream loach in a sterile, algae-free tank will starve. The tank needs mature surfaces covered in biofilm and green algae. Supplementing with blanched vegetables and algae wafers helps, but natural biofilm growth is the primary food source.

    Biggest Mistake New Owners Make

    Putting them in a standard heated tropical community tank. Hillstream loaches need cool water (65 to 75F) and strong current that replicates their native river habitat. A 78F tank with a hang-on-back filter is slowly killing them. Every single day in warm, still water shortens their lifespan.

    Expert Take (Mark Valderrama, AquariumStoreDepot)

    A dedicated hillstream setup with a river manifold, smooth river rocks, temperatures around 68 to 72F, and high oxygen levels is one of the most unique aquarium configurations in the hobby. Hillstream loaches in their element are active, visible, and fascinating. Hillstream loaches in a standard tropical tank are stressed, hidden, and dying. The setup makes or breaks this fish entirely.

    Key Takeaways

    • The Hillstream Loach is a peaceful fish that grows up to 3 inches
    • It is a social fish that prefers to be kept in groups
    • They are bottom-dwelling fish that will eat pest snails
    • They will not bother plants and are great for aquascapes

    Introduction to Hillstream Loaches

    Hillstream loaches will not be found on a top 10 freshwater fish to buy list, but that doesn’t mean that they don’t make a great addition to any beginner or expert aquarium! These fish are one of the most attractive algae-eating species available, but they have some special requirements when it comes to their tank setup and feeding. It’s also important to note that these are expensive fish, with individual fish fetching upwards of $10-$20.

    In general, the hillstream loach, scientifically known as Sewellia lineolata, is considered a coldwater species that prefers water temperatures in the mid 60s to low 70s. This makes them compatible with goldfish and cooler-water fish, like white cloud minnows (Tanichthys albonubes) and zebra danios (Danio rerio); they especially like being kept in small groups with one another. That being said, many hobbyists have successfully kept these fish with typical tropical fish in water temperatures up to 80° F.

    The common name ‘hillstream loach’ also refers to the overall Balitoridae scientific family instead of the singular species; this group also be known as river loaches. From this family, many members of the Sewellia genus are available for trade in the aquarium hobby.

    Appearance

    The appearance of the hillstream loach can tell you everything you need to know about the natural habitats of this fish. These fish are undeniably flat!

    Hillstream Loach in Tank

    The flat body of the hillstream loach and its strong suckermouth are designed to keep these fish attached to hard surfaces when up against a strong water current. Their flattened fins allow them to scoot across these surfaces and the substrate without having to swim up into the water column, where they would easily be pushed away. All these features make these loaches resemble tiny little freshwater stingrays!

    Hillstream loaches have unique reticulated black and yellowish-green spots and stripes that help them blend in against sandy and rocky surfaces. They have very short barbels that help them locate food.

    It can be near impossible to tell male hillstream loaches apart from females, especially if trying to differentiate between juveniles. Adult hillstream loaches can be told apart due to the broadness of their heads. Females have very broad heads that are nearly the same width as their pectoral fins. Males have square heads that stick out from the rest of the body. Male hillstream loaches also develop ‘fences’, or small raised bumps, along their pectoral fin and head area.

    How Big Do They Get?

    Adult hillstream loaches only grow to about 3 inches. As we’ll see though, these small fish like to be kept in groups which can start to increase bioload.

    Are They A Type of Pleco?

    At first glance, it’s easy to confuse a hillstream loach with a pleco fish from the Loricariidae family. However, hillstream loaches and plecos are not even remotely related. In fact, their similarities end with their matching colors and body shapes.

    The differences begin when they diverge as different taxonomic species at the order level, where hillstream loaches are members of the Cypriniformes family and plecos are members of the Loricariidae family. The biggest difference between these two fish is that hillstream loaches originate from Southeast Asia, while plecos are found throughout South America. Other morphological differences also become apparent when put side to side.

    An Overview of the Fish Species

    Scientific NameSewellia lineolata
    Common NamesReticulated hillstream loach, Hillstream loach, Tiger hillstream loach, Vietnamese hillstream loach, Gold ring butterfly sucker
    FamilyBalitoridae
    OriginVietnam, Laos, Cambodia
    DietOmnivore
    Care LevelModerate
    ActivityLow Activity
    Lifespan5 to 10 years
    TemperamentPeaceful
    Tank LevelBottom
    Minimum Tank Size20 gallons
    Temperature Range64. 80° F
    Water Hardness10. 15 KH
    pH Range6.5. 7.5
    Filtration/Water FlowHigh
    Water TypeFreshwater
    BreedingEgg Layer
    Difficulty to BreedModerate
    CompatibilityCommunity tanks
    OK, for Planted Tanks?Yes

    Classification

    KingdomAnimalia
    PhylumChordata
    ClassActinopterygii
    OrderCypriniformes
    FamilyBalitoridae
    GenusSewellia / Beaufortia / Gastromyzon
    SpeciesMultiple genera and species

    Origin and Habitat

    Take a guess where the hillstream loach originates. If you answered with hill streams, then you’d be correct!

    Hillstream loaches come from shallow and well-oxygenated, fast-moving rivers and streams throughout Vietnam, Laos, and Cambodia1. They’ve been documented in some veins of the famous Mekong River, which houses some of the largest freshwater fish ever recorded.

    Due to the high water flow of these waterways, the substrate is usually composed of smooth rocks and gravel. Because of this intense water movement, most plant species cannot take root. Instead, these shallow areas receive high amounts of sunlight, facilitating biofilm and other algae growth for hillstream loaches to feed on.

    Hillstream Loach Care

    Hillstream loaches are considered a moderate fish species to keep in terms of difficulty. These are peaceful freshwater fish that have a few specific requirements, though they is more adaptable than we think.

    Are They Hard to Keep?

    There are a few reasons why hillstream loaches are considered more difficult to keep than your average tropical fish, but there are a few myths behind their care too.

    One of the main reasons the hillstream loach is seen as a difficult species to keep is due to its price tag–it’s true! These fish are expensive to buy, and so logic follows that they’re hard to keep. Unfortunately, this creates a lot of rumors about these fish and limits them to a certain group of hobbyists.

    Another reason why hillstream loaches are seen as difficult is that many hobbyists believe they only do well in fish tank setups that match the exact parameters as seen in their natural habitat ecosystems. This includes oxygen-rich water with high currents and lots of biofilm. While these conditions should try to be met as best as possible, it’s been proven that they’re not necessary to ensure that hillstream loaches thrive.

    In fact, a hillstream loach tank can look very different from one hobbyist to another. Some people keep them with coldwater goldfish, while others keep them with typical tropical fish species. Like all other fish species, the key to keeping these beautiful loaches is maintaining water parameters and quality.

    Aquarium Setup

    A hillstream loach tank can look like a lot of different things. These are versatile fish that can be kept in various aquarium setups.

    There are four main hillstream loach aquarium setups you can consider:

    1. Goldfish Tank

    Hillstream loaches originate from cool waters, which allow them to live in the lower temperatures preferred by goldfish. However, there are a few things that need to be considered before just throwing these loaches in with any goldfish. Hillstream loaches still prefer well-oxygenated, fast-flowing water with stable parameters. Many fancy goldfish cannot swim against an overly strong current, and large goldfish can create a lot of waste that creates instability in water chemistry.

    What Does A Comet Goldfish Look Like

    If planning on keeping hillstream loaches with goldfish, only keep goldfish breeds capable of swimming against a strong current while also maintaining water quality. This aquarium setup should have minimal decorations to meet goldfish requirements, but still have some structures for your loaches to hide and graze.

    2. Coldwater Setup

    Goldfish aren’t the only type of coldwater fish. A coldwater fish tank can house a variety of fish and plant species that prefer cooler temperatures. These setups can be complex or straightforward in design, but plenty of space and the surface area should be allotted to your loach.

    3. River Tank

    A river tank is the most natural habitat you could give your hillstream loach. This aquarium setup would mimic the fast-moving, boulder-filled streams and rivers these fish originate from. Powerful filtration and powerheads circulate water to create a constant current that agitates the surface water to introduce oxygen. Plants would be minimal, with intense lighting that facilitates algae growth.

    4. Tropical Community Tank

    Lastly, hillstream loaches can be kept in a community tank setting. You may be wondering how to keep a coldwater species in warm water temperatures, but these fish are surprisingly adaptable. Most hillstream loaches have adapted to aquarium water parameters, meaning that they can comfortably survive in water temperatures up to 80° F.

    Spotted Rasbora In Display Tank

    These community tanks can be filled with your favorite tetras, rasboras, and featured fish. However, make sure to ask the previous owner the water temperature at which your fish was being kept so that you can acclimate it correctly.

    There are many ways that you can keep a hillstream loach in your aquarium. There are a few additional rules to keeping them safe within your setup, though.

    One thing to consider is that hillstream loaches are agile fish that have the ability to travel upstream and over waterfalls. The glass wall of an aquarium is no feat and they can easily travel their way up the side and out. To help prevent this, make sure to use a tight-fitting aquarium lid.

    Another thing to consider is that these fish are relatively delicate. They also have very strong suckermouths that can easily become attached to a filter intake or other equipment. Make sure to use a filter guard to prevent this from happening while also giving your fish more room to graze!

    Tank Size

    The hillstream loach is a relatively small fish that stays on the bottom of the aquarium. However, they are relatively active and appreciate plenty of room for grazing on algae so they won’t do well in an overly small tank.

    What Size Tank Do They Need?

    The best tank size for a small group of 3 hillstream loaches is 20 gallons; a longer tank will provide more open swimming space and surfaces for algae to grow for your loaches. Hobbyists keep a single hillstream loach in a 10 gallon fish tank, but these fish do best when kept in groups.

    Any aquarium larger than 20 gallons will comfortably house hillstream loches as long as there is enough room for adequate water flow and filtration. You will also need to consider which hillstream loach tank mates you plan on keeping and if you want to keep them in a group. These fish are very sociable with each other, but will largely leave other fish unbothered.

    Water Parameters

    Hillstream loaches aren’t necessarily sensitive fish, but they will thrive when freshwater aquarium conditions are stable. They should be kept in a mature tank with 0 ppm ammonia, 0 ppm nitrite, and minimal nitrates. Hillstream loaches can adapt to a wide range of pH and hardness levels but do best in water that tests between 6.5-7.5 and 10-15 KH, respectively.

    Depending on the type of freshwater tank you plan on keeping your hillstream loach in, water temperature should remain stable between 64-80° F.

    Filtration and Aeration

    Filtration and aeration are some of the most important factors of this hillstream loach care guide. These fish come from very fast-moving waterways that are filled with oxygen! Recreating that in the aquarium can be difficult, but it’s also unnecessary.

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    If you want to keep your hillstream loaches in a setup that resembles their natural habitats most, then you will need strong filtration and aeration. Together, a powerful filter and an aerator can create a unidirectional water flow that carries dissolved oxygen; additional wave pumps may be needed to create the desired effect. The filter will create surface movement while the wave pump pushes the rest of the water column. The aerator can be placed anywhere in the tank to help introduce additional oxygen.

    Lighting

    Hillstream loaches are one of the few species of bottom feeders that stays active throughout the day. These peaceful fish have diurnal sleep cycles where they are awake during the day and sleep at night. This is in contrast to most loaches and catfish that wait until the cover of night to emerge.

    Remember, the hillstream loach can usually be found eating algae in shallow waters under direct sunlight. This means that they can withstand relatively high lighting intensities in the aquarium, though shade from driftwood and smooth rocks should be provided throughout the tank in case they want to hide.

    Aquarium Plants and Decorations

    Though tank conditions might allow for live aquarium plants with intense lighting, they’re not necessary for the success of your hillstream loach. Unlike most other fish species in the wild, hillstream loaches take shelter under rocks and other structures instead of plants.

    In the aquarium, hillstream loaches will appreciate plants for coverage and shade. They will also gladly eat any algae that grow on the leaves without eating any of the healthy ones.

    If keeping your hillstream loach in high-flow conditions, then you’ll need sturdy plants that can withstand the current. Some recommended species are Java fern (Leptochilus pteropus), Amazon sword (Echinodorus grisebachii), and members of Bolbitis.

    Otherwise, the tank can be decorated with any aquarium-safe decoration of your choosing.

    Tank Maintenance

    This loach species isn’t the most difficult to keep, but water quality needs to be maintained. Hillstream loaches are sensitive to excess nutrients and rapid changes in parameters. Regular tank maintenance is necessary to keep nutrients down and replenish the tank water.

    In general, 10-25% weekly or biweekly water changes are recommended for any tank. During water changes, the substrate can be siphoned for leftover food and other fish waste. Planted tanks will process nutrients better than those without any plants.

    Since these fish can be kept in coldwater setups, it is necessary to chill new water than warm it up, as most tropical fish keepers need to do otherwise.

    Substrate

    Hillstream loaches can be kept on a variety of substrates, but it’s important that whatever you choose doesn’t cause injury to the underside of your fish. In the wild, the substrate is eroded down by fast-moving water. This allows the smooth bodies of hillstream loaches to stay safe from jagged rocks and twigs.

    The best aquarium substrate for a hillstream loach would be sand or fine gravel.

    Great For Bottom Feeders
    Fine Natural Sand

    Natural sand is excellent for bottom feeder fish to forage around in.

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    Community Tank Mates

    Though beautiful fish, a group of hillstream loaches won’t fill a tank on their own. You need tank mates that stay active in the middle and top portions of the water column! Again, the best hillstream loach tank mates will depend on the type of aquarium setup you keep them in.

    For goldfish tanks, hillstream loaches will do well with active goldfish breeds that aren’t weighed down by excess finnage or appendages. For general coldwater tank setups, your loach can get along with danios and white cloud minnows.

    There aren’t too many aquarium fish that originate from the exact same areas as the hillstream loach, but there are a few species that do well in a river tank setup. This includes freshwater gobies and danios as well.

    Hillstream loaches can also be kept in the same tank as popular tropical fish, like tetras, gouramis, and other bottom-dwellers as long as they are with other peaceful species. They can even be safely kept with dwarf shrimp!

    Aggressive and predatory fish will stress out and even injure unprotected loaches.

    Food and Diet

    Though they greatly enjoy benthic algae, hillstream loaches are omnivores that need both meat- and plant-based foods. One of the difficult aspects of keeping hillstream loaches is ensuring they get enough to eat as other fish may eat their food before them.

    Hillstream loaches will enjoy a variety of live, frozen, and freeze-dried options including brine shrimp, insect larvae, and bloodworms. They can be given algae wafers and a variety of blanched vegetables, including lettuce and cucumber, to supplement their vegetative needs.

    To help make sure that your loaches are getting enough to eat, feed the rest of the tank floating fish flakes while providing your hillstream loaches with sinking food. This should keep the other fish in the aquarium distracted while your hillstream loaches eat.

    Breeding Them

    Hillstream loaches have been successfully bred in the aquarium hobby and are considered one of the easiest loach species to breed in general. This is great due to their high retail price!

    It should be noted that hillstream loach breeding is possible in all aquarium setup types, not just coldwater ones. Differentiating males from females can also be difficult if they’re not fully mature adults.

    Hillstream loaches can be bred in a separate tank or in the main display. It’s strongly believed that sudden warm to cold water temperature changes encourage spawning, which can be replicated with a succession of water changes. Eventually, the male will begin to entertain and chase the female; the male may even try to dislodge the female from her attached surface.

    When ready, the couple will pair up freely in the water column. This often happens in the area with the most flow. The theory is that the fertilized eggs will be transported downstream to more relaxed water conditions. In the aquarium, this can lead to many eggs and fry being sucked up by the filter.

    Once the eggs hatch, the fry should be fed infusoria. They are not able to suction themselves to surfaces as well as their parents at small sizes, so they will mainly be found along the substrate. Parents are unlikely to eat their young, but it’s still advised to separate them as soon as possible to have the most success.

    Where to Buy

    Hillstream Loaches are widely available at most local fish stores and online. For healthy, quality stock I recommend checking out Flip Aquatics. They consistently have great fish and back every order with a live arrival guarantee. Dan’s Fish is another solid option with a wide selection of freshwater species.

    This article is part of our Loach Species Directory. Visit the hub page to explore all species care guides.

    Check out our loach tier list video where we rank all the popular loach species for home aquariums:

    What It Is Actually Like Living With Hillstream Loach

    Watching a hillstream loach navigate strong current is unlike anything else in the hobby. They suction to rocks and glass, crawl against the flow, and hold position in current that would sweep other fish downstream. Their flattened body and specialized pelvic fins are engineered for this exact purpose.

    They graze constantly. A hillstream loach works its way across every hard surface in the tank, rasping biofilm with a mouth designed for the task. You can watch the clean trails they leave on algae-covered rocks. It is satisfying in the same way watching a Roomba clean a floor is satisfying.

    Temperature is something you monitor daily with this species. A summer heatwave that pushes your tank above 78F is a genuine health emergency. Keeping a fan directed at the water surface or running a chiller during warm months is standard practice for hillstream keepers.

    Hard Rule: Hillstream loaches require strong, highly oxygenated flow that exceeds what most aquarium setups provide. A powerhead or wavemaker pointed to create a river current is not optional — it is their habitat.

    Is the Hillstream Loach Right for You?

    Good Fit If:

    • You can provide strong, directional current from a powerhead or wavemaker
    • You want an unusual, coin-shaped loach that clings to glass and rocks
    • You keep a cool-water setup at 65–75°F (18–24°C) with high oxygen saturation
    • You enjoy fish that are more display-oriented and substrate-focused than active swimmers

    Avoid If:

    • Your tank has calm or low flow – hillstream loaches will decline rapidly without strong current
    • You keep delicate plants that cannot handle constant turbulence
    • You run a warm tropical tank – they need cooler, highly oxygenated water
    • You want a typical beginner-friendly bottom dweller like corydoras

    Conclusion

    You won’t find the hillstream loach on many top-fish-to-buy lists, but there’s no reason you can’t add one of these beautiful fish to your coldwater or tropical fish tank. Hillstream loaches originate from unique ecosystems, but they’ve adapted well to hobby tank conditions and will even be willing to breed. The only problem you may run into with these loaches is making sure they get enough to eat, but otherwise, hillstream loach care is straightforward and easy.

  • Why Do Betta Fish Flare Their Gills? 6 Reasons Explained

    Why Do Betta Fish Flare Their Gills? 6 Reasons Explained

    After 25+ years keeping bettas, I can tell you that gill flaring is one of the most misunderstood behaviors in the hobby. New keepers often panic when they see it, assuming their fish is stressed or sick. But flaring is actually your betta’s primary communication tool. it can signal territory defense, a stress response, or even just a reaction to seeing its own reflection in the glass. I’ve covered this exact topic in a dedicated video, and in this guide I’ll walk you through the six main reasons bettas flare so you know exactly when to intervene and when to relax.

    Expert Take (Mark Valderrama, AquariumStoreDepot)

    Gill flaring is one of the most misunderstood betta behaviors. After 25 years, I see two extremes: owners who panic every time their betta flares, and owners who hold a mirror to the tank daily as entertainment. Occasional flaring is normal and healthy. It exercises the muscles and is part of normal betta behavior. Constant flaring from a persistent trigger is chronic stress, and chronic stress shortens the fish’s life. Know the difference.

    Key Takeaways

    • When agitated or enthusiastic, betta fish may flare their gills to display their hostility.
    • When it comes to aggression, males might be more aggressive than females.
    • When they are first exposed to a new area, they may snap at their owners.
    • When Betta fish flare, they enlarge their gills and fins to seem larger and more intimidating to potential competitors or rivals.

    Why Do Betta Fish Flare Gills?

    Quick Answer

    Bettas flare their gill covers (opercula) as a threat display. It happens when they see another betta, their own reflection, or any fish they perceive as a rival. Short flaring episodes (under a minute, a few times a day) are normal. Sustained or constant flaring indicates a persistent stressor: a visible reflection, an aggressive tankmate, or a tank that is too small to provide enough territory. Identify and remove the trigger.

    In the wild, some animals express their rage or violence in distinctive yet potent ways. They frequently engage in it to avoid intrusion or protect themselves from predators. (Video source).

    When their control over their established areas is in danger, Betta Fish flare their fins.

    This behavior is also possible when they need to defend their mating partners or when they catch a glimpse of themselves in the mirror.

    Fortunately, this aggressive behavior is confined to brief flares and fin spreads. So, there is no need for concern.

    But first, let’s examine their actions in greater depth so that you can comprehend them. Additionally, it will aid in preventing excessive flare-ups

    1. Signaling Aggression

    When they see another fish that they believe could invade their region, bettas are known to respond violently.

    They may also be hostile to other fish simply because they don’t like the way their tank mate looks.

    And Betta flares its gills to show its rage or fury. This is a basic trait that enables them to protect their area against intruders.

    2. Showing Dominance

    Comparatively speaking to their female counterparts, male Bettas are rather territorial. In their natural environment, male Betta fish may flare their gills and fins to display hostility if another fish wanders into their channel.

    In order to protect its area from any potential threats, it does this.

    Their gills flare, making them appear larger and more menacing. The adversary often caves and alters its strategy as a consequence. This behavior aids in preventing physical harm to other members of the species.

    But problems might go worse if the space is tiny. Because of this, you should take special care not to house two male Bettas together in a tiny or constrained space when you first bring them home.

    Give each fish ample room to establish its own territories, or keep only one male Betta in the entire tank.

    Without a way out, the two male betta will end up fighting until one of them dies.

    3. Protecting the nest

    In order to safeguard their eggs and fry after the fish tank’s spawning season is over, Betta fish create bubble nests out of saliva and air.

    It’s rather typical for certain fish animals to assault their rivals’ nests. Additionally, some fish species have distinctive strategies to frighten off visitors.

    When it comes to asserting their supremacy, betta fish are already very aggressive and show territorial aggression. They will never put up with even the smallest suggestion of having their nests destroyed. They also flare their gills to defend their territories.

    Bettas often don’t flare up when they see smaller animals like snails. But in the event of a threat, they may also scare them away by acting like Bettas.

    So make sure you get a limited number of bettas when it’s time for them to spawn.

    Author’s Note: Bettas release a chemical into the water as a warning sign for other bettas to stay away from them. This helps with avoiding serious outbreaks. But I still recommend providing your betta fish with separate spawning sites within the tank. You can make different hiding spots in their tank using plants.

    4. Flaring At Reflection

    Finding your fish flaring at nothing might stress you out or even make you laugh. But oddly enough, your Betta buddy finds it challenging to differentiate its own reflection from another fish.

    Seeing their own reflection makes Betta males aggressive. For the most part, they mistake it for another fish in the same tank. And as an act of defense, they flare their gills and fins.

    Finding Betta’s flaring fins is natural. But if it happens too often, Betta fish can end up getting distressed.

    5. A New Environment

    Any type of fish can become distressed by a change in their habitat. And Bettas’ situation is the same.

    Fish have a difficult time adjusting to different environments after they grow accustomed to one type of habitat. They consequently exhibit hostility.

    Some animals have a tendency to grow timid and stop feeding altogether until they feel more at ease.

    Betta fish are acutely aware of any changes in their surroundings. Additionally, they could act aggressively since they’re new to the tank and aren’t comfortable with the surroundings.

    A little time will help your pet acclimate. An accurate grasp of the environment might need a few days or perhaps a week.

    6. Unfamiliarity With The Owner

    Betta fish have different perspectives from humans. While humans can distinguish items with more precision, Bettas just use shapes and colors to detect the presence of their owners and other nearby objects.

    When you move around the room or close to their tank to feed them or check on them, they experience vibrations as well. To your new Betta pet, you are only a powerful predator attempting to ingest them.

    Bettas are able to distinguish colors visually, making it simpler for them to identify a male Betta.

    However, they are unfamiliar with you because you are new to their neighborhood. In this situation, they will behave violently and protect themselves as is only normal.

    It doesn’t imply that they hate their owners or that betta fish are aggressive by nature. They only use it as a means of projecting fear onto any potential environmental threat they perceive to exist.

    How To Make Them Comfortable?

    It’s simple and easy to make your Betta comfy. Only when they are startled by their surroundings do they get angry.

    You won’t often see Bettas displaying their gills and fins at you after they are used to their owners and there is nothing nearby that can disrupt their serenity.

    1. Don’t Make Too Much Noise

    Reduced noise is one strategy for reducing their stress. Bettas are sensitive to strong vibrations, which might cause them to activate their defense mode.

    By reducing the noise surrounding them, you can prevent continuous flaring.

    Make sure you don’t provoke their hostility too frequently since it is really unhealthy for your pet’s immune system. They will be more susceptible to diseases due to a compromised immune system.

    Additionally, avoid taking them out every time you clean the Betta tank to let them become acclimated to your presence.

    Be cautious while moving the gravel vacuum around the fish if you’re using one. Additionally, while cleaning the water in the tank, use a cup or another item that you generally use to clean water gently.

    I advise against often removing the Siamese fighting fish from the aquarium, particularly when they are young.

    2. Give Them Time To Adjust

    How would you feel or act if you were in a strange place, surrounded by unfamiliar people, in a setting you had never experienced?

    Your response might not be the same as a Betta fish. However, even a person would find it difficult to handle the terrible scenario.

    Betta flare as a reaction to the novel setting. The hostility should stop once the Betta fish has thoroughly surveyed the aquarium. How you act will also affect how quickly your fish adjusts to its new environment.

    Giving them some time to acclimate is, therefore, preferable to giving up on your fish.

    3. Cover The Back Of The Tank

    In order to reduce the likelihood of potential aggression, block their reflection with a background.

    Backgrounds will keep them from seeing their reflections all the time. Consider a background or a lit background that will either provide more intrigue for your fish or prevent them from seeing themselves.

    4. Get A Spacious Tank With Plenty Of Hiding Spaces

    Long-term success depends on you giving Betta fish lots of places to hide. When your pet is young, it has no idea where to hide from you or its bothersome tank mates.

    Once Betta fish are comfortable in their new environment, they can spend as much time as they like hiding from you and their tank mates by using the hideouts.

    To create perfect hiding places for your Betta fish, you may use various plants, pebbles, and other decorations.

    They will now retreat into hiding rather than flaring excessively, which is advantageous for you, your Betta fish, and their tank companions.

    Do Female Bettas Flare?

    You would assume that only male Betta fish flare their gills as a natural reaction to danger given the males’ aggressive attitude. The fact is that women are not as aggressive as men. But they can also flare to express hostility or disgust.

    Typically, females lash out at one another. Female fish may or may not act in a domineering or territorial manner, in contrast to males who usually do.

    They are semi-aggressive, therefore their hostility doesn’t come over as strongly as a guy would.

    It’s also quite uncommon for females to flare at their own mirror. They concentrate on exploring their surroundings as a means to receive the activity and excitement they need rather than engaging in combat with the seeming adversary.

    By putting a mirror next to the tank, you can assess their level of hostility. It will make it easier for you to keep an eye on the female’s aggression’s frequency and level.

    Additionally, consider giving female bettas a variety of places to hide so they may do so during times of adversity.

    Additionally, female betta fish flare their fins to deter males when they notice them.

    For female bettas, leading a stress-free life is just as important. The female Betta fish’s immune system is highly likely to get compromised if she flares excessively. In order to set up a large tank with lots of hiding places, I advise purchasing an equal number of males and female bettas.

    Benefits Of Behavior

    It’s not always awful or bad for the fish when flares are used. Even though flaring on occasion might be beneficial, flaring frequently is a symptom of discomfort. I’m going to highlight a few advantages of Betta flaring.

    1. A way to make things interesting

    In general, bettas are highly clever. Whether it’s eating food, interacting with their owners, or getting along with other fish in their tank, it’s simple for them to become bored with their routine.

    A mirror can be held up to the fish or placed in their direction to prevent boredom. Watch to see whether the fish see their own reflection. Your fish will immediately puff up their gills and fins to defend their territory from their apparent opponent as soon as they notice it.

    It’s sufficient to perform this task once every week for up to two minutes. By doing this, you’ll be able to mimic their usual behavior without putting them in any risk.

    2. Helps with attracting potential mates

    In their native habitat, male Bettas flare to entice the female betta fish. In captivity, they consistently follow the same pattern of attraction. Usually entertaining to see is the rivalry among the males to see who is larger and more intimidating.

    3. Makes it easy to get rid of stress

    Stress is a genuine problem for bettas. They will flare their gills and fins to let some of the tension out if they encounter anything upsetting nearby.

    Bettas have a high level of excitement. To maintain their composure, they flare their fins and gills. A hormone called cortisol is released into their systems as a result of the unexpected excitation.

    This stress hormone, if present in the body for an extended period of time and in excessive quantities, might harm the health of your fish.

    Their gills and fins will naturally flare as a means of releasing it.

    4. Stretches their muscles and fins

    Do you know how Bettas maintain the health of their fins and muscles? To maintain the integrity of their organs, they flare their fins and gills.

    You might consider it a beneficial form of exercise for the fish.

    Utilizing mirrors for exercise is a terrific concept, much like using them to assist people pass time when they are bored.

    Simply set a mirror in front of the tank and wait for them to catch a glimpse of themselves. Some bettas can even swim up to the mirror and attack the adversary from there. Just be careful that the exercise doesn’t go on for too long.

    Why does betta fish flare too much?

    As I have explained, your betta fish should never flare excessively. Their immune system may be compromised, which would make them much more vulnerable to illness.

    While fish naturally flare, they usually only do so when something threatens them or when they’re having fun. However, there is another reason why fish flare.

    Incompatibility with tank mates

    One of the main causes of your fish’s frequent flare-ups may be a poor selection of tank mates.

    It is common for male bettas to fight one another. However, a single male in a group of six female fish won’t cause any trouble for other fish species.

    In a Betta aquarium, species including common guppies, Platies, swordtails, and black Mollies thrive.

    FAQs

    Why is my Betta fish flaring its gills?

    The nature of Betta includes flare-ups. Betta fish flare their gills and fins to display anger that prevents other fish from invading their territory.

    Due of their tendency to be more aggressive than females, males exhibit this behavior more frequently.

    What is coming out of Bettas gills?

    A parasite called a gill fluke can infect the gills of your pet. These parasites, which resemble skin flukes but only affect the Betta’s gills, are parasites.

    Your fish may be an easy target for the parasites to assault if it has a compromised immune system or dwells in unfavorable water conditions.

    Is Betta flaring healthy?

    Only if it is kept under control can flaring benefit your Betta fish. In actuality, this is a fantastic technique to release the stress hormone cortisol. To keep things from being too monotonous, you may also stimulate flare in your pet.

    However, your Betta may become stressed if you flare excessively. Make sure stresses don’t affect your pet.

    Closing Thoughts

    As a new aquarist or someone who isn’t familiar with Bettas, finding them flaring at you is certainly distressing.

    Bettas tend to flare at other fish and their own reflection when they feel threatened. But wait for a second! Why would they flare at you when you aren’t a fish or someone who can endanger their territory?

    The answer is simple. They aren’t familiar with you or the new environment. As a result, they show aggression by puffing up their gills and fins to protect themselves.

    I will walk you through some of the most common reasons for Betta flaring and how to make them comfortable.

    References

  • Blood Parrot Cichlid Care Guide: The Honest Take on This Controversial Hybrid

    Blood Parrot Cichlid Care Guide: The Honest Take on This Controversial Hybrid

    Table of Contents

    Blood parrot cichlids are a man made hybrid that divides the hobby. Love them or hate them, they are here to stay. What most people get wrong is underestimating their size and their sensitivity to water quality. A blood parrot in a dirty tank loses color, develops black spots, and hides constantly. I have kept these for years and the fish you see hiding in a pet store corner is not the same fish you get in a clean, stable setup. But feeding is where most people fail. Their fused mouths cannot bite or tear food. The cichlid that needs you to rethink how feeding works.

    The cichlid that needs you to rethink how feeding works.

    What Most Care Guides Get Wrong About Blood Parrot Cichlid

    Most care sheets list the minimum tank size for Blood Parrot Cichlid and call it a day. But a minimum is just that. In my experience, giving them more room changes their behavior completely. You see more natural movement, less stress, and fewer aggression issues. Another thing guides gloss over is temperament. Blood Parrot Cichlid 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 Blood Parrot Cichlid

    Blood parrots are hardy, personable fish. But their hybrid origins come with real limitations that you need to accept before buying one.

    Their mouths are deformed by design. Blood parrots cannot close their mouths fully. This is a feature of the hybrid, not a defect you can fix. It means they struggle to eat certain foods, cannot defend themselves against aggressive tank mates, and are vulnerable to mouth injuries. Feed pellets sized for their mouth and avoid aggressive species.

    They are messy eaters. Because of their mouth structure, blood parrots drop a lot of food while eating. This means more uneaten food on the bottom, higher waste levels, and a greater need for filtration and gravel vacuuming.

    Dyed blood parrots are an industry shame. If you see purple, blue, or green blood parrots, they have been dyed. This process is stressful, often involves injections, and the color fades over time. Never buy dyed fish. You are funding animal cruelty.

    They are surprisingly shy. Despite their chunky appearance, blood parrots are nervous fish. They need caves and hiding spots to feel secure. A blood parrot without cover will spend its life stressed and pale.

    Biggest Mistake New Blood Parrot Cichlid Owners Make

    Keeping them with aggressive cichlids. Blood parrots cannot defend themselves properly due to their deformed mouths. Putting them with jack dempseys, convicts, or aggressive mbuna is setting them up to get beaten up. Choose peaceful tank mates only.

    Expert Take (Mark Valderrama, AquariumStoreDepot)

    If you want a blood parrot, buy a natural red or orange specimen from a reputable source. Never buy dyed fish. Give them caves, feed them quality pellets, and keep them with peaceful tank mates. They will reward you with 10+ years of genuine personality.

    ASD Difficulty Rating: Tier 1/2 – Beginner-Intermediate

    Blood parrot cichlids are hybrid fish with a deformed beak that limits their ability to compete for food. They are peaceful but need target feeding, good filtration, and 55+ gallon tanks. More sensitive than their hardy reputation suggests.

    Key Takeaways

    • The blood-red parrot cichlid is a hybrid fish that was developed through cross-breeding practices in 1986.
    • These fish have some difficulties feeding, but they are otherwise very easy to care for.
    • Blood parrot cichlids make great community fish but should not be kept with large aggressive species or with smaller fish that they might swallow.
    • Blood parrot cichlids should not be confused with saltwater parrotfish.

    Fish Species Overview

    Scientific NameHybrid
    Common Namesblood parrot cichlid, blood red parrot cichlid, freshwater parrot fish
    FamilyCichlidae
    OriginCaptivity
    DietOmnivore
    Care LevelEasy
    ActivityModerate
    Lifespan10 – 15 years
    TemperamentSemi-aggressive
    Tank LevelAll levels
    Minimum Tank Size55 gallons for a single fish, increase by twenty gallons for each individual
    Temperature Range72 – 82°F
    Water Hardness6-18 dGH
    pH Range6.5 – 8.0
    Filtration/Water FlowLow
    Water TypeFreshwater
    BreedingEgg-layers
    Difficulty to BreedDifficult
    CompatibilityCompatible with larger community fish
    OK, for Planted Tanks?With Caution

    Classification

    OrderCichliformes
    FamilyCichlidae
    SubfamilyCichlinae
    GenusHybrid origin
    SpeciesHybrid (Amphilophus citrinellus x Paraneetroplus synspilus)

    What Is Are They?

    The blood-red parrot cichlid is a medium to large tropical freshwater fish from the Cichlidae family. These strange, ball-shaped fish are instantly recognizable with their huge eyes and very small mouth. Their mouth is unusual in that it looks somewhat like a parrot’s beak, but it is actually a deformation.

    These cichlids are pretty controversial because they are man-made fish and we don’t know exactly which parent species were used to breed the blood parrot cichlid. They are probably a hybrid of two or more Central American Cichlids. The prime suspects are the well-known Midas Cichlid and the Redhead cichlid.

    Regardless of their controversial ancestry, these fish make excellent pets. Sure, they will look strange, but in a really cool way! These fish have bright colors and the most expressive eyes.

    Blood parrot cichlids are also very interactive fish. They often swim up to meet you, especially if you’re the person who provides their dinner!

    Origin And Habitat

    The blood parrot cichlid is a hybrid fish, which means it was bred from two or more different species. They were first developed in Asia in the 1980s, and today they are popular in the aquarium trade all over the world.

    Some hybrids can occur in nature, but blood parrots are only found in captivity. You could say that their natural habitat is the aquarium! In fact, it’s pretty unlikely that these unusual fish would be able to survive in the wild at all.

    Appearance

    Blood parrot cichlids are instantly recognizable by a combination of their bright orange colors, round body, humped shoulders, huge eyes, and small parrot-like mouths that can’t fully close.

    Blood Parrots in Aquarium

    They are clearly recognizable as cichlids, although their strange features make them look more like cartoon characters than wild fish!

    Orange is the most dominant color, but there are other breeds too. Their large fins are the same color as their body, although they is darker, lighter, or even translucent.

    The blood parrot’s eyes are one of its most unique features. Their pupil is large and often strangely shaped. The iris around their pupil contrasts strongly with blue or gold.

    These features have become less extreme since they were first bred, but the parrot cichlid is still a very distinctive freshwater fish.

    Blood parrot cichlids change a little as they grow older. Young fish often have dark markings toward the tail and less color than adults.

    Common Varieties (Types)

    Blood parrot cichlids come in a few different colors and breeds. Natural blood parrot cichlids vary from white to yellow and orange.

    You will also come across the king kong blood parrot. This is a larger breed that has a normal mouth.

    Unfortunately, there are some blood parrot breeding practices that should not be supported. If you ever come across a heart-shaped blood parrot cichlid, take a closer look. These fish have no tails because they have been cut off (video below).

    Jellybean parrots are fish that have been dyed, and they are available in just about any color. Some breeders also tattoo their fish to enhance their colors or write messages on them. Rather get yourself a regular blood parrot. These fish have all the color, charm, and cuteness that you could ever need!

    Lifespan

    Blood parrots can make long-lived pets if properly cared for. This hybrid fish species has a typical lifespan of five to fifteen years.

    Of course, there are many factors that decide the actual life span of any fish, including genetics, diet, water quality, and more. Take note of the care tips in this article to keep your pet healthy and live longer.

    Average Size

    Blood parrot cichlids are often sold at just two or three inches, which can catch beginner fishkeepers off guard. They will grow a lot larger as they mature and reach 6 or 7 inches in length.

    Fortunately, these hybrid fish are relatively slow growers, which gives you plenty of time to upgrade their aquarium if necessary. Regular blood parrots max out around 8 inches, but there are some larger breeds too. The rarer king kong blood parrots can reach an impressive 12 inches.

    Blood Parrot Cichlid Care

    Blood parrot cichlids are easy to care for once you understand their feeding needs. Read on to learn how to create the perfect home for these adorable hybrid fish.

    Aquarium Setup

    The blood-red parrot cichlid is pretty undemanding when it comes to its care and aquarium setup. These fish will thrive in just about any tank that provides enough space.

    If you’re setting up a new aquarium for blood parrot cichlids, you’re going to need some basic hardware like a heater, filter, and lighting. You’ll also need to cycle your tank before introducing your first fish.

    Tank Size

    The Blood red parrot cichlid is a big fish, so it needs a big fish tank. An 8-inch specimen is much bigger than it sounds when you factor in how tall and wide these ball-shaped hybrids can get!

    They are fairly slow-growing fish, but it’s best to start out with a big enough tank from the beginning. You could keep a young specimen in a 29-gallon aquarium, but 55 is a much better bet. Add 20-30 gallons for each additional parrot cichlid you want to house.

    Blood parrot cichlids are not the fastest fish in the world, but they sure can jump. Make sure your aquarium has a secure-fitting hood to avoid any mishaps.

    Water Parameters

    The blood parrot cichlid is pretty adaptable when it comes to water parameters. They are tropical fish, so they will need warm, stable water temperatures. Their preferred temperatures seem to be around 80°F, although they is kept down to about 75 °F.

    Blood parrots are adaptable to soft or hard water, and they do great in pH levels between 6.5 and 7.5.

    Ammonia and nitrite levels should always read zero when you test your water. However, these fish are not overly sensitive to nitrates if you perform regular water changes.

    Filtration and Aeration

    Good quality filtration is essential for keeping parrot cichlids healthy in the long run. Parrot cichlids are not the strongest swimmers, so they won’t appreciate a powerful current in their tank.

    However, their inefficient eating habits mean a lot of uneaten food will accumulate in the tank. Therefore, high-volume but low-flow filtration is ideal. A canister filter with plenty of filtration media is always a good bet.

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    Additional aeration is helpful but not essential. You can run an airstone to increase oxygen levels in the water or aim your filters outflow toward the surface of the water. Breaking the water surface will allow more oxygen to mix into the water.

    Lighting

    Blood parrot cichlids do not have any particular lighting needs, but they should have access to a natural day/night cycle. The easiest way to do this is to use a timer set to 6 to 10 hours per day.

    Of course, you don’t want your tank to receive any direct natural sunlight, as this can cause high temperatures and serious algae problems.

    Aquatic Plants

    Live plants can help to maintain great water quality for your blood parrot cichlids while making their tank more natural and attractive. Unfortunately, blood parrot cichlids are not the ideal fish for planted tanks, but that doesn’t mean it can’t be done. However, a lot will depend on your individual fish.

    Some blood parrots will tear up plants, while others won’t touch them. Fortunately, most blood parrots have weak mouths, so they can’t do too much damage.

    The biggest problem is that these fish may dig up the regular stem and rosette-type plants. Fortunately, you can still grow some amazing plants that don’t root themselves in the substrate.

    Epiphytes like Java ferns and anubias are safe bets if secured to some sturdy hardscape. Floating plants like red root floater, Salvinia, and hornwort are also great options.

    Decorations

    Blood parrots often dig, and this is a problem for your decorations too. Carefully arranging rock piles and driftwood is pretty dangerous if your fish tip them over into the glass or onto themselves.

    Blood parrot cichlids is shy, especially while they are still adjusting to a new fish tank. Caves and tunnels between your hardscape make great hiding places, and broken clay pots work just as well.

    Avoid using tall, heavy ornaments, especially near the walls of your tank. However, driftwood, flatter rocks, and aquarium-safe ornaments are great choices.

    Substrate

    Sand is the ideal substrate for blood parrot cichlids because it is safe for them to dig. However, rounded gravel is also a great choice.

    Avoid sand or gravel with sharp edges, and don’t bother with aquarium soils for rooted plants because these fish will just dig up your aquascape.

    Tank Maintenance

    Blood parrot cichlids are not particularly sensitive to nitrates, but like all fish, they deserve the best water quality that you can provide.

    Testing

    Purchase a water test kit before you add your parrotfish. You will need it during the aquarium cycling process. You’ll also need to test your water regularly once your tank is ready and you have added your fish.

    Testing is the best way to monitor the build-up of nitrates in your aquarium, and this information will help you design a tank maintenance schedule that is perfect for your setup.

    Vacuuming

    These messy fish leave a fair amount of food to sink to the bottom, so remove whatever doesn’t get eaten. Vacuuming your gravel while performing a water change is the best way to remove poop and waste particles trapped between your substrate.

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    Water Changes

    Partial water changes are essential for maintaining your blood parrot cichlid aquarium. Depending on the size and stocking of your tank, you will need to do this every one or two weeks.

    Remember to dechlorinate new water before adding it to your aquarium. Some of the chemicals found in tap water is harmful to your aquarium bacteria, plants, and animals.

    Community Tank Mates

    One of the great things about blood parrots is that they are pretty safe with other fish. Sure, they is pretty aggressive, especially when spawning, but they just don’t have the tools to do a whole lot of damage.

    However, some modern blood parrots are bred with larger mouths, and these fish will not be safe with smaller tank mates.

    One of the best tank mate species for blood parrot cichlids is other blood parrot cichlids. That’s right, and these funny fish can get along great with their own kind. However, they is kept with many other cichlids too.

    The following cichlid species can make good tank mates for blood-red parrots:

    In fact, most peaceful fish species that enjoy the same water parameters will make good blood parrot tank mates. However, you should avoid very small fish because your blood parrot will try to swallow them!

    Here are some potential tank mates that you can try:

    Tank Mates to Avoid

    Avoid aggressive fish that can hurt your blood parrots. Any large, carnivorous species that could swallow your parrotfish whole is a risky choice!

    Small fish like rasboras, badis, and endler’s livebearers can make a nice snack for your blood parrot cichlids. Sure, these hybrids aren’t exactly built for the kill, but they is persistent!

    Fish species that have special care requirements like cool water or fast currents should be avoided. Unfortunately, that rules out fancy goldfish as tank mates.

    Breeding

    Male Blood parrot cichlids are sterile, so these hybrid fish are very difficult to breed in the home aquarium. They do form pairs, and they may even lay eggs, but they are infertile and rarely hatch.

    Pairs will be very aggressive towards other fish at this time, and they will dig up the substrate to create a spawning area. However, the adults end up eating the eggs when they begin to develop fungi.

    Female blood parrot cichlids are often fertile, and they can actually breed with other cichlid species like red devils. Sexing blood parrot cichlids is tricky, although males have longer and more pointed fins.

    Food And Diet

    Feeding is probably the trickiest part of keeping blood parrot cichlids. Firstly, their small mouths don’t open and shut like other fish, so they struggle to get food into their mouths. Secondly, they are easily outcompeted by faster-moving fish in their tank.

    Avoid overfeeding your tank to overcome these issues, as this will only impact your water quality. One, two, or three meals per day is enough; just keep an eye on your fish to make sure they are getting a good meal.

    Keep reading to learn about the best foods to feed blood parrots.

    Daily Diet

    There are some excellent pellets formulated specifically for the blood parrot, but you can provide any high-quality, soft pellet that is small enough for them to swallow.

    Sinking foods are better since they lessen the chance of swim bladder problems, but many fishkeepers use floating foods without any issues.

    Supplements

    Supplements are foods that you can provide once a week or so to boost your fish’s condition. Frozen foods like blood worms and brine shrimp are great supplements, but your blood parrots will struggle to feed on them.

    Supplementing your parrot cichlid diet with shelled peas once per week is beneficial too. Simply boil them briefly and remove the outer shell.

    Common Health Problems

    Blood parrot cichlids are very hardy and not prone to disease if kept in good conditions.

    In the early days, blood-red parrot cichlids were quite heavily deformed and prone to various illnesses. These days the fish are more robust. Nevertheless, this hybrid species is susceptible to swim bladder problems.

    Swim Bladder Disease

    Swim bladder disease is a common condition in aquarium fish that causes swimming difficulty. Affected fish will sink to the bottom of the tank or float at the surface, and some even swim upside down.

    Mild cases is solved by feeding shelled peas, but Epsom salt baths is necessary for more serious situations.

    Other Health Issues

    Blood parrot cichlids are susceptible to most of the common aquarium fish illnesses. These show up after introducing diseased fish to the tank or when your fish are under stress from poor water quality or bullying from other fish.

    Keep an eye out for the following symptoms:

    • White spots on your fish’s body. This is a common symptom of a parasitic infection called ich.
    • Flashing. Fish scratch their itches by rubbing against the substrate or decorations in their tank. This behavior can be a sign of infection or poor water quality.
    • Torn fins and sores on the body. Torn fins can be a sign of fin nipping and bullying by other fish, but it can also be a symptom of other conditions like bacterial infections and a compromised immune system.
    • Rapid Breathing. A variety of stressors can cause rapid breathing. Testing your water quality for issues is the first step when identifying health problems in your fish, and increasing oxygen levels with an airstone can be helpful.

    FAQs

    What fish can live with them?

    Blood parrots are pretty peaceful fish and they get along with many other species. You can keep them with similar fish like severums or even other blood parrots. It’s best to avoid much larger or smaller fish and stick with species that enjoy the same water parameters.

    Are they peaceful?

    Blood Parrots are relatively peaceful as far as cichlids go, but they is aggressive when attempting to spawn. Fortunately, they are pretty harmless bullies due to their weak mouths.

    Are these fish smart?

    The blood parrot is known as a smart and interactive pet fish. They learn to recognize their owner’s face and will often swim up to the glass to greet you.

    Can parrot fish live with other fish?

    Blood parrots can be great community fish if kept with the right tank mates. However, they should only be kept with other freshwater fish that enjoy the same kind of water conditions. Tiny tetras and other nano fish are not safe.

    What do these type of freshwater fish eat?

    Blood parrots are omnivorous fish that will thrive on a diet of small sinking or floating pellets. They will appreciate frozen foods like bloodworms and vegetables like shelled peas as a weekly snack.

    How long do they live?

    Freshwater parrot cichlids can live for a long time if well cared for. Some specimens survive as long as 15 years.

    How many should you keep together?

    You can keep one blood parrot cichlid, or three or more. Two blood parrot cichlids might fight a lot unless you have plenty of space and structure in your aquarium. A big group of these hybrid fish works great, just make sure you provide 20 gallons or so for each additional fish you add.

    How big of a tank do they need?

    A single adult blood parrot cichlid should be kept in at least 55 gallons. Young fish can be housed in a 29-gallon tank.

    What It Is Actually Like Living With Blood Parrot Cichlid

    Blood parrots are the dogs of the fish world. That is not an exaggeration. A blood parrot will learn your face, swim to the front of the tank when you walk into the room, and beg for food with the same shameless enthusiasm every single time. They recognize the difference between the person who feeds them and a stranger. After a few months, you stop thinking of them as fish.

    The color changes tell you everything about their mood and health. A happy, comfortable blood parrot glows deep orange to red. A stressed one fades to pale peach and develops dark patches. You will learn to read your fish like a mood ring, and that feedback loop makes you a better fishkeeper whether you realize it or not.

    Watching them eat is equal parts endearing and frustrating. Their deformed mouths mean food falls out constantly. They chase pellets around the tank, grab one, drop half of it, and go back for more. You need to accept that some food waste is inevitable and plan your filtration accordingly. It is part of the deal with this fish.

    Hard Rule: Blood parrots cannot eat standard-sized pellets. Their deformed beaks require mini pellets or crushed food – otherwise they chase food around, swallow nothing, and slowly starve while appearing to eat.

    Is the Blood Parrot Cichlid Right for You?

    Good Fit If:

    • You want a personality-rich cichlid with unusual looks and real interactivity
    • You are comfortable with hybrid fish and the ethical debate around them
    • You have a 55+ gallon (208 L) tank and can manage moderate cichlid aggression
    • You enjoy cichlids but want something less destructive than most Central Americans

    Avoid If:

    • You have strong objections to hybrid fish – blood parrots are a man-made cross, not a natural species
    • You want to breed cichlids – male blood parrots are sterile
    • You keep small tank mates under 4 inches (10 cm) that may be harassed
    • You want standard feeding routines – their deformed mouths require specially sized food every meal

    Final Thoughts

    A blood parrot in clean water is a completely different fish than one in a neglected tank.

    Parrot cichlids are one of the most adorable freshwater fish in the hobby. They will not be for everyone, and it’s understandable that many aquarists prefer to steer clear of hybrids. Keep these fish if you want a pet with great color and personality, but be prepared to provide for its special feeding needs.

    Do you keep blood parrot cichlids? Share your experiences in the comments below!

    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.

  • Why Are There Bubbles In My Fish Tank? 9 Causes (and How to Read Them)

    Why Are There Bubbles In My Fish Tank? 9 Causes (and How to Read Them)

    Bubbles in a fish tank can mean a lot of different things. some completely normal, some worth addressing, and at least one (gas bubble disease from supersaturated water) that’s a genuine emergency. After 25+ years of keeping tanks, I’ve learned to read bubbles the same way I read other water quality signals.

    The most common scenario: persistent foam or small bubbles clinging to the surface usually means elevated organic waste. time for a water change. But betta bubble nests, plant pearling, and filter surface agitation are all healthy signs. Here’s how to tell them apart across all 9 common causes.

    Key Takeaways

    • Bubbles in your fish tank can be good, bad, or somewhere in between.
    • These bubbles can be the result of many factors, such as the aquarium filter, water quality, or labyrinth fish.
    • The best way to stop little bubbles from forming in your aquarium is by finding the thing that’s causing them.

    What Causes Air Bubbles In Your Tank?

    H2O, also known as water. The science behind our aquariums.

    In order to make the water for our fish tanks, hydrogen needs to bond with oxygen. This means that there is always oxygen available in your aquarium in the form of H2O! But sometimes oxygen can start to appear in the form of annoying microbubbles that stick to the sides of the aquarium and decorations and might even create a mat at the surface of the water.

    While they might look out of place, microbubbles are usually temporary in both freshwater and saltwater aquariums. In most cases, air bubbles will only stick around for a few days. But what causes these bubbles, and are they harmful to fish and invertebrates?

    1. New Fish Aquarium

    The most common time to see air bubbles form in the aquarium is in the few days following a new tank setup. Small bubbles clinging to the side of the aquarium and the surface of the water often leads new hobbyists asking “why are there bubbles in my fish tank”? It’s a good question!

    Bubbles in a new tank are nothing to worry about and should be expected. This is perfectly normal and is the result of oxygen escaping from the substrate, decorations, and surfaces of the aquarium. They should dissipate within a week.

    2. Air Stones And Filtration

    The next obvious source of air bubbles in your aquarium is direct oxygen inputs, like an air pump or your filtration system. This equipment pumps oxygen into your tank in an attempt to create surface water agitation, which facilitates the gas exchange of oxygen and carbon dioxide between the aquarium and the atmosphere.

    Both air stones and filters are great ways to introduce dissolved oxygen into the aquarium. The bubbles produced should be clear in color and pop almost immediately. Some bubbles created by the air pump may not pop right away and create an area of tiny bubbles on the surface of the water. This is usually nothing to worry about.

    3. Water Changes

    Water changes can also cause microbubbles. This can result from tank water agitation causing more oxygen to enter the tank, but it can also be due to differences in water temperature.

    Cold water holds more oxygen than warm water. If new aquarium water is cooler than that already in the tank, this oxygen may be released through tiny bubbles that stick to the aquarium glass. This is not ideal if there are fish and invertebrates present in the tank due to stressful changes in water temperature.

    Water change water should be the same water temperature as the existing aquarium water to prevent fish from going into shock. A several-degree difference can lead to tiny bubbles forming while also stressing out fish.

    To help prevent this, new water should be heated with an aquarium heater to the desired temperature.

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    4. Medications

    Another reason why tiny air bubbles might form on the water’s surface is due to medication use. Many medications, like Hikari’s PraziPro1

    Thus, any bubbles that form in the aquarium during this time are thicker than usual, leading to longer-lasting bubbles. This effect can be decreased by increasing water agitation, which is normally recommended when using strong medications. The bubbles formed should be clear, though some medications can cause an unusual shimmer or foam bubbles.

    5. Oily Surface Layer

    Look down at your aquarium. Do you see a rainbow or off-white swirls? This could be a sign that a contaminant is in your fish tank. Don’t worry just yet, though.

    This contaminant can be organic or inorganic. The natural oil from fish food as well as from hobbyists’ arms and hands, can leak into the aquarium over time. Other organic waste and proteins can also build up and create an oily surface layer. In addition to the discoloration, this layer of oil and protein foam will prevent bubbles from rising all the way to the top of the aquarium.

    Some hobbyists use paper towels to remove this layer periodically, but this is a temporary fix. The best way to prevent this is by improving surface movement. Hands and arms should also be thoroughly washed before performing fish tank maintenance.

    The real problem happens if this sheen isn’t from a natural source and is the result of soap residue or contamination from other cleaning tools and products. Not only will this result in foamy bubbles on the water’s surface, but will also affect your fish’s ability to breathe, which can quickly prove to be deadly.

    Keep cleaning products far away from the tank (including out of the air) and never use soap to clean an aquarium!

    6. Poor Water Quality

    Bubbles forming in the aquarium can be a sign of poor water quality, specifically concerning ammonia. Ammonia is a toxic compound that can burn fish’s gills and cause them to suffocate. Excess ammonia greater than 5 ppm can also cause the nitrogen cycle to stall in the aquarium, preventing beneficial bacteria from detoxifying the compound.

    If bubbles seemingly appear out of nowhere in your fish tank, check for improper water conditions with a reliable water test kit.

    7. Fish Nest

    Not all foamy bubbles are bad, though. In fact, creating a bubble nest is the main way labyrinth fish species reproduce. This is most commonly seen with male betta fish (Betta splendens), but can be seen in gouramis (Osphronemidae family) as well.

    Red <a href=Betta Fish” class=”wp-image-547320″/>

    Bubble nests are made up of many microbubbles on the surface of the water, usually attached to aquarium plants, aquarium glass, or other equipment. These nests can have a foamy appearance.

    It is often said that betta fish only make bubble nests when they’re perfectly happy in their environment. While this is largely true, bubble nests don’t always indicate that your fish is thriving. If your fish is creating bubble nests more than usual, make sure to check for poor water quality, as it might be a sign of stress.

    The male betta fish typically maintain bubble nests for several days; some hobbyists have noted a bubble nest lasting more than a week. Eventually, the bubbles will dissipate, even quicker if they’re near areas of water flow.

    8. Pearling

    Another good reason why you might have bubbles in your fish tank is due to a sought-after phenomenon called pearling. This is the visualization of aquarium plants releasing oxygen into the water column; the oxygen produced is released faster than it can dissolve into the water. This is regarded as a sign of a healthy tank with rapid aquarium plant growth.

    Pearling can result in bubbles covering the plant or floating to the surface of the water.

    Do They Hurt Your Aquarium?

    In general, air bubbles aren’t good or bad. There are many reasons for them to occur, with some reasons being neutral while others being good or bad. Small bubbles may be present in new fish tanks but they can also appear in well-established ones that have good a filtration system or that have regular water changes.

    At the same time, foam in your fish tank can either be a sign of recent medication use and bad water parameters or a healthy betta tank with pearling. If you aren’t expecting air bubbles to be present in your aquarium, then it’s worth questioning.

    9. Lookalikes

    It’s pretty easy to identify air bubbles in a fish tank, but there are one saltwater pest algae that you need to keep an eye out for bubble algae (Valonia ventricosa). This presents small, green jewel-like bubbles that cover the surface of rocks, corals, and equipment. These bubbles can even get stuck in the intake of a powerhead or aquarium filter.

    Newly-formed bubbles can have a more transparent appearance than older ones, making it confusing to realize they’re a type of algae. Some hobbyists like the appearance of bubble algae, but most try to eliminate it with regular maintenance as well as chemical and biological intervention.

    How To Get Rid Of These In The Aquarium

    Like anything in the aquarium hobby, to fix bubbles from appearing in your fish tank, you need to understand the root of the problem. Once that’s been discovered, small and large bubbles can be eliminated.

    1. Preventing Them In A New Aquarium

    There’s no reason to get upset over bubbles appearing in a new fish tank, but some hobbyists want to skip the waiting. There are a few ways to keep these bubbles out:

    1. Thoroughly rinse and soak all substrate, decorations, aquarium equipment, and filter media before use.
    2. Fill the aquarium with warm or hot water to lessen the amount of oxygen that enters the aquarium.
    3. Perform water changes to remove any foam bubbles that may appear on the water’s surface.
    4. Use an algae scrubber to wipe away any bubbles that form on the aquarium glass.

    2. Decreasing Due To Air Stones And Filtration

    Most hobbyists want to increase the amount of available oxygen in their fish tanks, just not in the form of microbubbles. While surface agitation is good, there are a few ways to prevent too many bubbles from entering your water column.

    1. Make sure equipment is securely installed. Connections and joints within the equipment should be fully submerged to prevent air from being introduced.
    2. Keep the air stone away from the filter. Bubbles can get sucked up and returned via the aquarium filter, creating additional bubbles.

    3. Increasing Oxygen And Dosing Medications

    Bubbles should be the least concern when dealing with dosing medications, but we understand that you want comfortable conditions for a sick fish.

    The best way to stop thick bubbles from forming in a medicated fish tank is by increasing water surface agitation. This will introduce some bubbles on its own but should help break up the viscosity caused by the medications. Increased oxygen and carbon dioxide exchange will also help combat lowered oxygen levels due to treatment.

    4. Removing An Oily Surface Layer

    Natural oils are to be expected in both freshwater and saltwater fish tanks. These can be removed through improved water surface agitation, manual removal, or physical removal through something like a protein skimmer.

    If your oily surface layer is due to a type of chemical, then there is more reason to be concerned. By the time these bubbles form, it’s usually too late for fish and invertebrates. However, a large water change can help save the remaining inhabitants.

    In the future, steer clear of traditional cleaning products in and around your fish tank. Instead, use hot water and vinegar to clean what you need to.

    5. Improving Water Quality

    Improving water quality and reaching more ideal water parameters is a long game. It takes time and patience, and the road to a healthy ecosystem isn’t linear.

    That being said, each fish tank is unique in how it runs. This means that the water parameters that work for one tank might not work for the next. However, no tank runs well with poor water quality.

    Here are a few ways to improve the overall health of your aquarium:

    1. Use good source water. Source water should be within the ideal parameters needed for your fish tank or a blank slate; many saltwater keepers use RO/DI water that is completely customizable for what their tank requires.
    2. Perform regular tank maintenance. The importance of aquarium maintenance cannot be overstated. Vacuuming the substrate, introducing fresh water, and rinsing filter media can easily keep waste down and parameters where you want them to be.
    3. Take regular water tests. As you understand your fish tank more, you won’t need to do water tests as often. However, in the beginning, stages, and future problems, you want to know how your tank operates across days. This will identify the problem and stop it from reoccurring in the future.
    4. Check on your fish tank daily. The best way to track your fish tank progress is by checking on it daily. Most problems happen over time and not overnight (though things can go south very quickly!). Be there to see it as it happens and stop it before it gets out of hand.

    6. Keeping Your Betta Fish Busy

    There is some discussion as to how to ‘treat’ bubble nests. Betta fish work hard on their nests and can get stressed when they’re prematurely disturbed or destroyed.

    What Is A Bubble Nest

    At the same time, bubble nests are a great form of enrichment for betta fish. By destroying your betta fish’s nest by removing it or breaking it up, you are giving your fish something to do. Still, this can stress out your fish and cause a change in their demeanor.

    7. Reduce Pearling

    In general, pearling from aquarium plants is never a bad thing; it’s a highly desirable effect that many hobbyists dream of! But if you don’t like the look of it, then there is an easy way to fix it.

    The best way to deal with aquatic plant pearling is by increasing water flow. This will dislodge and disperse any bubbles that form and rise. Be careful not to push your aquarium plants over with too much water flow, though.

    Final Thoughts

    Microbubbles can make a fish tank look unkempt and dirty. On the contrary, tiny bubbles are usually a good sign or the result of something else in the aquarium! Sometimes, bubbles are a sign that something is wrong in the aquarium, so any first or unexpected appearance of them should be taken into consideration.


    🐟 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

  • Fish That Clean Tanks: My Go-To Clean-Up Crew Picks

    Fish That Clean Tanks: My Go-To Clean-Up Crew Picks

    No fish will replace your gravel vac. I want to set that expectation right upfront. But after 25+ years building community tanks, I’ve come to genuinely rely on a good clean-up crew to handle the in-between work: grazing algae off the glass, picking up leftover food before it rots, and sifting through substrate. The right mix of bottom dwellers and algae eaters makes a real difference in water quality and tank aesthetics. Here’s what I actually use and recommend.

    Expert Take (Mark Valderrama, AquariumStoreDepot)

    Cleanup crew fish are one of the most misunderstood concepts in the hobby. People buy a pleco or a loach expecting it to clean the tank, then wonder why the tank still gets dirty. After 25 years, here’s the honest answer: no fish cleans a tank. They reduce algae, eat leftover food, and disturb the substrate, but they don’t replace good filtration or regular water changes. What they do is make maintenance less frequent and the tank look better between sessions. Choose your cleanup crew based on the type of problem you have, not just ‘something that eats algae.’

    Key Takeaways

    • Cleaner fish are fascinating and beautiful pets in their own right.
    • Each species requires care, so research their needs before adding them to your tank.
    • Provide bottom feeders with high-quality sinking food and supplement algae-eating fish with algae wafers when their natural food source runs low.
    • You will still need to perform regular aquarium maintenance and use an aquarium filter to keep your tank clean.

    What Are Clean-Up Crew Fish?

    You might have heard the phrase ‘clean up crew’ and wondered what it refers to. Well, your clean-up crew (CUC) are the animals that help to keep your aquarium clean!

    These fish and invertebrates keep your tank looking beautiful for longer, and they can even help to keep your other pets healthy.

    They do this by eating algae and uneaten food in your aquarium before it spoils. Some species even clean your substrate (sand/gravel) by searching for food morsels between the grains and the stems of plants.

    Clean-up-crew animals are not a replacement for good old-fashioned tank maintenance, but they can reduce the amount of cleaning that you need to do. As a bonus, these fish and inverts are also fascinating and beautiful creatures, so they add a ton of interest to any tank!

    Are you ready to learn about 10 amazing clean-up crew animals for freshwater aquariums? Let’s get started!

    Mark’s Pick

    For planted tanks, otocinclus are my first recommendation every time. They stay small (under 2 inches), work in groups of 5 or more, target green algae on plant leaves without harming the plants, and are peaceful enough for any community setup. The catch: they need a mature, stable tank with consistent water quality. Don’t add them to a new setup. For bigger tanks that need substrate work, a group of corydoras alongside a bristlenose pleco covers most of what you’d need.

    Top 10 Fish That Clean Tanks

    So now you know what clean-up crew animals do and how they can benefit your fish tank, but how do you choose the right species?

    Careful research is important before choosing any aquarium inhabitant. Aquarists should ensure that the new fish, animal, or plant will be happy in their tank size and water parameters and get along with their existing tank mates.

    We have a video below posted from our YouTube Channel for you visual learners. We go over more details in our blog post. If you enjoy our content, be sure to give us a sub on YouTube. We post new videos every week!

    Consider the following important stats before making your choice:

    • Scientific name
    • Temperament
    • Care Level
    • Origin
    • Adult Size
    • Benefits for your tank
    • Minimum tank size
    • Preferred water temperature range

    1. Corydoras Catfish

    Habrosus Corydoras
    • Scientific name: Corydoras spp.
    • Temperament: Peaceful
    • Care Level: Easy
    • Origin: South America
    • Adult Size: 2-3 inches
    • Benefits: Eats leftover food and cleans the substrate
    • Minimum Tank Size: 20 gallons
    • Temperature: 74 – 80 °F

    Corydoras are classic clean-up crew fish that deserve a place in almost any freshwater aquarium. These cute little catfish are wonderful community fish that get along with a huge variety of peaceful tank mates.

    Cory cats really shine when it comes to keeping your substrate clean. These small schooling fish scour the bottom for leftover fish food and actively search through the gravel and between plant stems to look for scraps.

    2. Loach

    <a href=Dwarf Chain Loach” class=”wp-image-1061557″/>
    • Scientific name: Pangio, Misgurnus, etc.
    • Temperament: Peaceful to semi-aggressive
    • Care Level: Easy to moderate
    • Origin: Asia
    • Adult Size: 2 -12 inches
    • Benefits: Eats leftover food, cleans substrate, and controls pest snail populations
    • Minimum Tank Size: Species dependent
    • Temperature: Species dependent

    Loach fish are great bottom-dwellers that will keep your tank clear of uneaten fish food. These peaceful fish come in a wide range of shapes, colors, and sizes.

    Loaches are also great for controlling pest snails. These fish can be a little shy during the day, but their crazy antics are very entertaining.

    Small species like the kuhli loach are great for tanks in the 20-gallon range, while larger loaches like the weather loach are suitable for larger tanks of 50 gallons or more.

    3. Bristlenose pleco

    • Scientific name: Ancistrus sp.
    • Temperament: Peaceful
    • Care Level: Easy
    • Origin: South America
    • Adult Size: 5 inches
    • Benefits: Algae removal from hardscape and glass, and substrate cleaning
    • Minimum Tank Size: 30 gallons
    • Temperature: 72 – 82 °F

    Bristlenose plecos are excellent algae-eating fish for freshwater tanks. These strange-looking catfish are true bottom dwellers that use their sucker mouths to graze on algae and diatoms (brown algae) on many surfaces, including your aquarium decorations and glass.

    These strange-looking fish are generally very peaceful, although they can be territorial with their own species. Keep a single bristlenose pleco in your tank with plenty of driftwood and hiding places to enjoy all the benefits this fish has to offer.

    4. Flagfish

    Florida Flagfish in Tank
    • Scientific name: Jordanella floridae
    • Temperament: Semi-aggressive
    • Care Level: Easy
    • Origin: Florida, USA
    • Adult Size: 2.5 inches
    • Benefits: Controlling algae growth
    • Minimum Tank Size: 10 gallons
    • Temperature: 66 – 72 °F

    The American Flagfish is an underrated champion when it comes to eating algae. These small freshwater fish feed on many types of algae, including hair algae, brown algae, and green algae. They even have a reputation for eating tough types like black beard algae.

    5. Geophagus & Satanperca Cichlids

    Geophagus
    • Scientific name: Geophagus spp., Satanperca spp. etc.
    • Temperament: Peaceful to aggressive
    • Care Level: Easy to Advanced
    • Origin: South America
    • Adult Size: 4 – 12 inches
    • Benefits: Substrate cleaning
    • Minimum Tank Size: 50 -100 gallons (depending on species)
    • Temperature: Species dependent

    Geophagus and Satanperca are two popular genera of South American cichlids1. These fantastic substrate cleaners are commonly known as eartheaters and they come in a huge range of sizes and colors.

    Earth-eaters feed by sifting through the substrate. They do this by taking mouthfuls of sand, filtering out the food particles, and expelling the rest back out through their gills.

    There are various species, but most eartheaters are larger fish that need a fairly large tank to thrive. Their care and temperament differ by species, so make sure to research carefully before buying a school of these fascinating fish.

    6. Rainbow Shark

    What does a rainbow shark look like
    • Scientific name: Epalzeorhynchos frenatus
    • Temperament: Semi-aggressive
    • Care Level: Moderate
    • Origin: Southeast Asia
    • Adult Size: 6 inches
    • Benefits: Controlling algae and eating leftover fish food
    • Minimum Tank Size: 50 gallons
    • Temperature: 70 – 79°F

    Rainbow sharks are great for cleaning up uneaten fish food, but they are also great algae eaters for a larger freshwater aquarium.

    These streamlined bottomfeeders are semi-aggressive fish, so keep them with similar-sized tropical fish species and make sure they are the only shark in your fish tank.

    Rainbow sharks are available in the wild type, with a dark body and red fins, or the albino version with a red eye and white body. GloFish rainbow sharks are also available in dazzling shades like Cosmic Blue and Sunburst Orange for fish keepers who want even more color.

    7. Molly

    How Do Molly Fish Look Like
    • Scientific name: Poecilia latipinna/ P. sphenops
    • Temperament: Peaceful
    • Care Level: Easy
    • Origin: South & North America
    • Adult Size: 3 inches
    • Benefits: Great algae-eating fish
    • Minimum Tank Size: 30 gallons
    • Temperature: 68 – 82°F

    Molly fish are one of the most popular species in the aquarium hobby. These easy fish are excellent algae eaters for a freshwater aquarium. They will eat algae from any surface, including your aquarium ornaments and the leaves of live plants.

    Molly fish are livebearers, so they are super easy to breed in the home aquarium. They also come in many colors, patterns, and fin shapes, so there is a variety to suit almost any tank!

    8. Slim Bodied Goldfish

    What is a slim bodied goldfish
    • Scientific name: Carassius auratus
    • Temperament: Peaceful
    • Care Level: Easy
    • Origin: China
    • Adult Size: 6 – 8 inches
    • Benefits: Helpful algae eater for lightly stocked cool-water aquariums
    • Minimum Tank Size: 30 gallons
    • Temperature: 65 – 75 °F

    Did you know that goldfish can make great algae-eating fish? Slim-bodied types like commons and comet goldfish can help to keep your freshwater tank clean. However, goldfish can be messy themselves if overstocked in a small tank.

    Goldfish are not suitable for a tropical tank because they are at home in cool water temperatures. Your goldfish tank should be at least 30 gallons, and beware; these fish will eat plants.

    9. Amano Shrimp

    • Scientific name: Caridina japonica
    • Temperament: Peaceful
    • Care Level: Easy
    • Origin: Japan
    • Adult Size: 2 inches
    • Benefits: These shrimp are excellent algae eaters for a planted tank
    • Minimum Tank Size: 10 gallons
    • Temperature: 60 – 80 °F

    The Amano shrimp is one of the best algae eaters for a nano freshwater aquarium. These awesome crustaceans feed on a variety of algae types, and they will keep your aquarium plants clean and healthy.

    Amano shrimp are very peaceful towards other tank inhabitants, but they are vulnerable to predatory fish species and other aggressive tank mates.

    Amano Shrimp are not the only algae-eating shrimp. Dwarf shrimp species like cherry shrimp and glass shrimp will also eat food scraps and help to control algae.

    Bamboo shrimp are another fascinating invertebrate species. These guys are filter feeders, which means they eat tiny food particles that are suspended in the water column.

    10. Aquarium Snails

    Golden Apple Snail
    • Scientific name: Various
    • Temperament: Peaceful
    • Care Level: Easy
    • Origin: Worldwide
    • Adult Size: 0.5 – 2 inches
    • Benefits: Snails are excellent algae eaters and they eat fish waste and leftover fish food
    • Minimum Tank Size: gallons
    • Temperature: 68 – 82°F

    Snails are one of the best clean-up crew animals for freshwater aquariums. Snails eat algae, uneaten food, and fish waste, all the things that we don’t want to see in our tanks! However, choosing the right species for your tank is important.

    Snails get a bit of a bad rap because some species have a tendency to multiply. These invertebrates tend to breed out of control in aquariums that are overfed and undermaintained. Nevertheless, some species are much easier to manage than others.

    Choose rabbit snails, mystery snails, and nerite snails if you would prefer to keep the population low. Ramshorn snails, Malaysian trumpet snails, and pond snails should be added with caution.

    Bonus Species

    Looking for even more algae eaters? Check out these great algae-eating fish and aquarium inhabitants:

    • Siamese algae eater – Crossocheilus siamensis

    Siamese algae eaters are peaceful fish that grow to about 6 inches. They are excellent algae eaters for aquariums of 30 gallons or larger.

    • Chinese algae eater – Gyrinocheilos aymonieri

    Chinese algae eaters are similar to the Siamese algae eater but grow much larger. These fish are fantastic for controlling algae, but they have a reputation for eating the slime coat off their tank mates when they get older.

    Otos are the perfect algae eaters for a nano freshwater tank. These tiny catfish will keep your plants and glass sparkling clean without harming your shrimp or other fish.

    • Twig catfish – Farlowella acus

    Twig catfish are another excellent algae eater that won’t bother other fish in your community tank. These unusual creatures look just like twigs and reach about 6 inches in length.

    Caring For Them

    Clean-up fish and other helpful animals like algae-eating shrimp and snails can do an amazing job of cleaning up your aquarium, but they need care just like any other pet. That means you need to observe their preferred temperature range, water parameters, and minimum tank size.

    Algae eaters can make your tank look brand new in just a few days, but it’s what you can’t see that can become really dangerous. Test your water regularly to monitor the water quality in your aquarium.

    You will need a heater for most species, and good-quality filtration is vital. Remember to provide your pets with a natural day/night cycle by running your aquarium lighting on a timer.

    Feeding Your Crew

    Your clean-up fish can be split into two categories. Algae eaters and bottom feeders. Many species fit into both groups, but some species have specialized diets and require specific supplements.

    Typical bottom feeders like corydoras catfish and loaches will require sinking fish foods, while specialized algae eaters like Otocinclus catfish will need an extra food source if they manage to eat all the algae in your tank.

    Supplement your cleaner fish and animals with the following foods:

    • Frozen food like brine shrimp
    • Algae wafers
    • bottom feeder pellets
    • Blanched vegetables like zucchini

    Keeping Your Aquarium Tidy – Other Factors to Consider

    Algae-eating fish and invertebrate species can do a wonderful job of cleaning your fish tank, but they are not a replacement for aquarium maintenance. Remember, even cleaning up fish produce waste.

    Several factors contribute to algae growth and mess in your aquarium, and these factors tend to work hand in hand.

    Clean-up fish may help your tank’s ecosystem function more efficiently, but they cannot maintain good water quality in the long run. If you are considering adding clean-up animals, you might already have a water quality issue.

    So how do you improve water quality?

    Filtration

    The first step is to run good filtration. Your filter has some unexpected benefits for your aquarium. Firstly, filtration removes a lot of the physical waste particles from your water, leaving it visibly cleaner.

    More importantly, your filter is home to vast numbers of beneficial bacteria. These are the ‘good guys’ that turn dangerous nitrogen compounds like ammonia into relatively safe nitrates.

    However, your filter cannot capture all the solid particles because many of them drop to the bottom and collect. Your beneficial bacteria cannot remove nitrates either, so regular aquarium maintenance is vital.

    Proper Aquarium Maintenance

    The most important aquarium maintenance task is the partial water change. This involves physically removing a percentage of your aquarium water and replacing it with new dechlorinated water. Typically you’ll need to replace 25-50% of your aquarium water every 1 to 3 weeks.

    You can design your maintenance schedule based on the results of water testing, and the frequency and volume of your water changes are determined largely by the next few factors listed below.

    Aquarium Stocking Levels

    The more fish you have, the more you need to feed them, and the more waste they will produce. Unfortunately, you cannot fix an overstocked fish tank by adding more fish!

    School of Rasboras

    So how many fish can you keep? Well, there is no simple answer. The old guideline of 1 inch of fish for every gallon in your tank is helpful, but this rule has serious flaws.

    Your tank’s maximum stocking level depends on the factors discussed below, but it’s always wise to slightly understock your aquarium.

    Low-maintenance vs. Messy

    Some fish are messier than others. For example, larger fish like Oscars and other cichlids can be messy feeders that leave a lot of uneaten food to sink and decay in your tank.

    These fish can be hard on your clean-up crew and often require plenty of space, strong filtration, and frequent maintenance.

    Low-maintenance fish like mollies are a great choice because they do a good job at hunting down food scraps. They will even keep their own tank free of most algae.

    Small vs. Large

    Larger fish eat larger meals and produce more waste, so think carefully before buying a monster fish. However, A small aquarium does not necessarily stay cleaner than a large one. Small tanks can be very unstable and tend to require more frequent maintenance.

    A large aquarium with small fish is a great option if you wish to minimize aquarium maintenance. Adding live plants will make a huge difference too.

    Read on to learn about the benefits of keeping a planted tank.

    Live Plants Keep Algae at Bay

    Live aquarium plants are a beautiful addition to any aquarium. They provide a natural environment for your fish, they’re fun to grow, and they look great. However, plants do even more than that!

    Live plants compete with algae, so they are one of the best options for keeping your tank clean. Plants also use nitrates and phosphates as a fertilizer, turning harmful compounds into beautiful new growth.

    FAQs

    Which ones cleans the aquarium?

    There are many excellent cleaner fish for freshwater tanks. Nerite snails and otocinclus catfish are some of the best algae eaters, but they won’t do much to keep the bottom of your tank clean. Other freshwater snails like Malaysian trumpet snails and bottom-dwelling fish like bristlenose plecos can do a great job of cleaning up waste at the substrate level.

    What animal keeps an aquarium clean?

    There are a variety of animals that can help to keep your freshwater aquarium clean. Ghost shrimp, cherry shrimp, and other invertebrates like apple snails are fascinating creatures that can help control an aquarium algae problem.

    Do algae eaters keep an aquarium clean?

    Algae eaters can do an amazing job of controlling many types of algae, including green spot algae, brown algae, and most soft algae types. However, you will still need to clean your tank and perform regular water changes and maintenance to keep your pets healthy.

    Which one maintains the glass?

    Otocinclus catfish, stiphodon gobies, and bristlenose plecos are the best algae eaters for cleaning your glass. Mystery snails and nerite snails are great invertebrate options for keeping your glass free of algae.

    What can I put in my aquarium to keep the water clean?

    A good quality filtration system is the most important tool for keeping your aquarium clean. Cleaner fish like Siamese algae eaters, corydoras catfish, and mollies can also help to keep your tank looking great.

    Cleanup Crew Comparison

    SpeciesCleansMin TankDifficultyBest For
    CorydorasLeftover food, substrate20 gal (75 L)EasyAny community tank
    OtocinclusGreen algae on leaves20 gal (75 L)ModeratePlanted tanks
    Bristlenose PlecoAlgae, biofilm, wood25 gal (95 L)EasyAny freshwater setup
    LoachSnails, leftover food30 gal (113 L)EasySnail control
    Amano ShrimpAlgae, detritus10 gal (38 L)EasyNano/planted tanks
    Nerite SnailsAlgae on glass/decor10 gal (38 L)EasyGlass cleaning
    MollyAlgae (light duty)20 gal (75 L)EasyCommunity tanks
    Rainbow SharkAlgae, debris55 gal (208 L)ModerateLarger setups only

    Avoid If:

    • You have a persistent algae bloom: cleanup crew won’t solve an algae outbreak driven by excess light or nutrients
    • Your tank is under 3 months old: otocinclus in particular need a mature biofilm to survive
    • You’re already overstocked: adding cleanup crew raises bioload, which makes water quality worse, not better
    • You want snail control in a shrimp tank: loaches eat both snails and shrimp

    Final Thoughts

    Practically any freshwater aquarium can benefit from one or more of the amazing clean-up fish and invertebrates in this article. If you’re like me, you might find that these fascinating creatures become your favorite animals in the tank!

    Just remember that you need to perform regular maintenance in your tank no matter what, and even bottom feeders and algae eaters need good care and regular feeding. Which clean-up crew animals do you keep? Tell us about your favorites in the comments below!

  • Green Aquarium Water: 4 Causes and 7 Fixes (Including the Fastest One)

    Green Aquarium Water: 4 Causes and 7 Fixes (Including the Fastest One)

    Green water is one of those problems that happens fast and looks alarming. your tank goes from crystal clear to pea-soup in what feels like days. I’ve dealt with it in both freshwater and saltwater setups over the years, and the cause is almost always the same combination: too much light and excess nutrients creating ideal conditions for a free-floating algae bloom.

    The good news is that green water isn’t dangerous to your fish. The bad news is water changes alone won’t solve it. you need to hit the light and nutrient problem at the root. Here are the 4 main causes and the 7 most effective fixes, starting with the fastest one.

    Key Takeaways

    • Green aquarium water is ugly but usually not harmful to aquatic life.
    • The main causes behind green discoloration in a fish tank are lighting issues, overfeeding, overstocking, or poor aquarium maintenance.
    • Greenish water can be cured by resolving these problems, installing additional equipment, or planting live plants in freshwater tanks and growing more corals/macroalgae in reef tanks.

    Why Is Your Aquarium Water Green?

    What causes aquarium water, and how do you fix it?

    Green aquarium water is often caused by single-cell algae that free-swim in the water column. This planktonic algae is different from those you may find growing on glass or aquarium decorations but grows due to many of the same contributing factors.

    It can be near impossible to tell exactly which type of single-cell algae you’re dealing with when you have green water1. Luckily, the specific species doesn’t matter too much. It is safe to assume that you are dealing with a kind of phytoplankton, most commonly dinoflagellates.

    In order to make your water go from swampy green to crystal clear, you need to understand what’s causing the algae to grow.

    Reasons Your Aquarium Water Is Green

    Although a single-celled species, this algae growth is caused by the same factors that influence macroalgae growth. This includes lighting issues, overfeeding, overstocking, and overall poor tank maintenance.

    Green Water in Aquarium

    1. Lighting Issues

    Aquarium lighting is hard to get right but we’ve certainly come a long way from fluorescent light bulbs. Today, many aquarium lights give complete control to the user in terms of intensity, spectrum, and photoperiod. All of these parameters are customizable for the best plant and coral growth.

    The problem is that algae growth hasn’t changed over the years. Algae still love light and will grow whenever and wherever they can when light is available.

    Lighting can contribute to algae growth in several ways. The first way is intensity. High lighting intensity is needed for good plant and coral growth. However, if there is excessive light or the speed of organism growth doesn’t match the strength of the light, then algae can start to outcompete the other photo-dependent creatures in the tank. Sudden increases in light can also increase algae growth as plants need time to acclimate to stronger conditions.

    Another way tank lighting affects green water is due to the spectrum emitted, or the different wavelengths of energy that are transmitted from the aquarium light to the photosynthetic parts of the plant or coral. The problem is that different photosynthetic species absorb different wavelengths of energy, meaning that plants and corals thrive under different spectrum settings from algae. It can take some trial and error to find the right tank light settings that allow for plant growth instead of algae growth.

    Lastly, photoperiod can greatly influence the appearance of green aquarium water. A long photoperiod is one of the leading causes of green water along with excess nutrients, which we’ll talk about more later.

    Photoperiods vary from tank to tank based on the aquatic plants and corals being kept. In general, hobbyists keep their tank lights on for anywhere between 7 to 10 hours. This gives enough time for plants to make and store food, which contributes to healthy growth.

    However, plants can’t fulfill photosynthetic processes to their full extent for longer-than-normal periods. As a result, algae become opportunistic and outcompetes other photosynthetic organisms for the leftover available light energy.

    Another important factor to keep in mind is that natural light will contribute to green aquarium water. This may be the result of a nearby window. Natural light has a very different spectrum from controllable tank lighting, allowing unwanted wavelengths to feed algae. Direct sunlight can also contribute to warming the tank, which further fuels green water algae.

    2. Overfeeding

    Most hobbyists are guilty of overfeeding their fish. The truth is that fish don’t need to eat that much food and a lot of it goes wasted. This excess is left to rot at the bottom of the tank until it is converted into nutrients or manually removed.

    Another problem that comes along with overfeeding is the quality of the food. Many unknowing hobbyists pick foods that are inexpensive. Unfortunately, many of these foods have poor nutritional value with lots of filler ingredients. These filler ingredients don’t get completely digested by fish and are mixed back into the aquarium water; phosphate levels from these foods are especially likely to affect green water algae reproduction rates.

    Leftover and uneaten food lead to excess nutrients that quickly cause green water algae to thrive.

    3. Overstocking

    Similarly, overstocking can also cause algae to bloom in your aquarium.

    Green Water in Tank

    A surplus of fish and invertebrates means more waste that needs to be processed. In balanced aquariums, fish waste is effectively broken down and processed by beneficial bacteria. When there is too much waste available, bacteria are overwhelmed, and nutrients are left to accumulate in the form of ammonia, nitrite, and nitrate.

    In extreme cases, high levels of ammonia can stop the nitrogen cycle from happening altogether. This is deadly to fish and a much bigger problem than unpleasant green aquarium water.

    4. Poor Tank Maintenance

    Free-floating algae bloom when there are imbalances within the aquarium. One of the main ways aquarium hobbyists keep their fish tanks running smoothly is by performing regular tank maintenance. This includes regular water changes, gravel vacuums, and filter upkeep.

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    This might sound like a lot of work, but minimal maintenance will ensure that you never experience green water in your freshwater or saltwater aquarium.

    Most aquariums need to be cleaned once a week or once every other week. Some hobbyists get by with doing maintenance only once a month, but this can only be achieved once you know the ins and outs of your system. In general, a 10-25% water change is needed weekly or biweekly.

    When performing a water change, it is important to know the water parameters of the new water that is added. Many freshwater hobbyists use tap water as it contains the necessary minerals needed for a healthy tank. Unfortunately, tap water also contains a lot of unknowns, which can unknowingly boost nitrate and phosphate levels, leading to unwanted free-floating algae.

    If your tap water has poor water quality, then you will need to find another source. For the best control, marine hobbyists use RO/DI water that can then be customized to their preference.

    During water changes, the substrate should be vacuumed. Food and waste accumulate on the bottom of the tank, which can lead to high nitrate and phosphate levels. Kicking up the substrate too much at once can also upset water parameters, so it’s important to only do one section at a time at first.

    Every now and then, the filtration system should also be cleaned. Some hobbyists gently rinse their filter media weekly, but this can be done on a monthly basis; handling filtration media can disturb and damage beneficial bacteria, which could potentially lead to green water outbreaks.

    Is This Harmful To Fish?

    Green aquarium water looks bad. While it might seem like your fish is struggling to survive in a cloud of green, green water is generally harmless to fish.

    Free-floating algae won’t kill your fish and many fish and invertebrates naturally live in green-colored ecosystems; you won’t see crystal-clear aquarium water in the wild!

    However, free-floating algae bloom can cause oxygen levels to dip, which could potentially cause fish to suffocate. While algae perform photosynthesis and create oxygen in the process, algae respire when light is not present and create carbon dioxide in exchange. This buildup, in addition to the carbon dioxide produced by fish and invertebrates, can prove to be deadly in extreme cases.

    It should also be noted that plants love light. In especially green water, they may struggle to receive enough light necessary to grow and live. Stunted plant growth means less nutrient uptake, which further contributes to the growth of the algae.

    Big picture, green water in a fish tank is usually indicative of a greater underlying problem. These are the true problems that could potentially kill your fish. In general, this means severe imbalances in water quality.

    Can This Ever Be Good for the Tank?

    Yes! In fact, some hobbyists deliberately grow free-floating algae in their fish tanks to cultivate a natural ecosystem.

    Algae is considered a primary producer, which means that it’s at the bottom of the food chain. Bacteria and other microorganisms use algae as food. These are then eaten by other organisms, including infusoria, which eventually become desirable food for small fish and fry.

    How To Fix Your Tank Problem

    It can be hard to tell when aquarium water is turning green. One day your fish tank is crystal clear, the next, it’s murky, and then you have a full-on green water problem. This transformation can happen in just a few days, so it’s important that you check on your aquarium daily.

    Luckily, fixing a green algae problem is pretty straightforward once you’re able to identify the underlying problem: lighting issues, overfeeding, overstocking, or poor tank maintenance. A few other methods of treating green aquarium water are using additional equipment, chemical treatments, and adding live aquatic plants.

    1. Resolving Lighting Issues

    Aquarium light fixtures are the best they’ve ever been, but they only work their best when they’re calibrated for your individual system. This takes some trial and error, but a good light setting and schedule are crucial for maintaining and preventing green aquarium water.

    If a green algae bloom has already taken hold of your fish tank, reassess how many hours your light is on. If you’re towards the bottom of the recommended 7 to 10-hour range, then check the intensity and spectrum. Recalibrate the light for the specific species you are growing. Failing lighting can also affect efficiency.

    While you’re at it, check your tank’s surroundings. Ensure that there is no direct sunlight hitting the aquarium and that ambient lighting is kept to a minimum.

    2. Limit Feedings

    Overfeeding is easy to fix, though it may pull at some heartstrings–you do not need to feed your fish every time you walk past the tank!

    Instead, invest in high-quality food that will be fully digested. At the same time, reduce portion sizes. If your fish are still hungry, feed them several smaller portions throughout the day.

    Remove all uneaten food after 5 minutes.

    3. Compensating For Overstocking

    It happens. You get wrapped up in the excitement of buying fish that you take home a few too many. While this isn’t ideal, you need to give all your fish the best life possible.

    If possible, rehome the fish. Some pet stores might take back the fish, but there are many online communities that can connect fellow hobbyists.

    If rehoming the fish isn’t possible, then a larger filtration system may be installed. Additional filtration media will help compensate for the increased waste entering the system. Providing more water flow in the form of powerheads and air stones will also help keep debris from settling while facilitating gas exchange.

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    4. Achieving Perfect Water Parameters

    The truth is those perfect water parameters don’t exist, and you should never change a healthy tank for one that looks good on paper. The most important part of tank parameters is having 0 ppm ammonia and 0 ppm nitrite, as these compounds can be deadly. Nitrate and phosphate levels should be kept to a minimum but are needed to facilitate a functioning system.

    Water parameters can be maintained through regular tank maintenance and water changes with reliable source water. Debris and other organics should be removed weekly with an aquarium siphon to prevent nutrient buildup. Water parameters should then be tested weekly to ensure that balance and stability are achieved.

    5. Additional Equipment

    It usually isn’t necessary to purchase additional equipment to deal with a green algae problem, but there are some added benefits to installing new equipment. One of the best pieces of equipment you can purchase to combat greenish water is an ultraviolet (UV) sterilizer.

    UV sterilizers polish water. This device uses UV light to penetrate DNA, RNA, and proteins to destroy most pathogens, viruses, bacteria, and algae. UV sterilizers are very commonly used in pond settings that are susceptible to algal blooms and infestations. In the aquarium, UV sterilizers can be very helpful for combatting small issues concerning diseases and suspended algae in the water column.

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    The problem is that UV sterilizers are not the cheapest pieces of aquarium equipment. Quality ones retail for at least $100, with prices increasing depending on the size required. The UV light also needs to be regularly replaced. It’s important to keep in mind that a UV sterilizer will also take up valuable space in the aquarium display or in external filtration.

    6. Chemical Treatment

    Chemical treatment is not recommended for treating a green algae problem. Chemicals simply cover up the problem and don’t address it as its root.

    The only chemicals we recommend are those that bolster the fish’s immunity and overall fish tank health during stressful periods.

    7. Add Live Plants

    Instead of harsh, difficult-to-dose chemicals, simply add live plants to your tank. For reef tanks, add easy-to-keep corals or macroalgae; a refugium can also help to export excess nutrients.

    Live plants provide a plethora of benefits to the freshwater aquarium. Not only will aquatic plants help tackle green algae problems, but they’ll continue to feed the system with fresh oxygen, food, and shelter.

    If you’ve never kept a planted tank before, the initial thought of it can be scary. It is true that most plants require a better-than-average aquarium light, but LED lights are very affordable and low maintenance. If you can’t take that plunge right now, floating plants and other low-maintenance species can easily be kept under lower light settings.

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    No matter which species of plant you decide to go with, aquarium plants will help correct a green water problem and keep the tank healthy.

    Final Thoughts

    A fish tank can turn green in just a few days. While this sudden change is definitely a cause for concern, the algae that cause the discoloration is unlikely to harm fish or invertebrates. However, there is some threat to aquatic life if excess nutrients are the underlying problem.

    Green aquarium water is mostly caused by lighting issues, overfeeding, overstocking, and poor tank maintenance. The hardest part of correcting a green water problem is identifying the root of the problem. Luckily, the discoloration can be fixed by resolving those issues or by adding additional equipment or live plants.


    🐟 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.

  • Why Do Fish Jump Out of the Tank? 8 Reasons and How to Prevent It

    Why Do Fish Jump Out of the Tank? 8 Reasons and How to Prevent It

    If you’ve kept fish for any length of time, you’ve probably lost at least one to jumping. I have. It’s one of those things that happens quietly. you come home, you’re one fish short, and then you find the culprit dried up behind the tank stand. Not a great morning.

    The fix is almost always the same: a tight-fitting lid. But understanding why fish jump is worth knowing, because some of the reasons. bad water quality, aggression, wrong tank conditions. are actually warning signs you need to address. Here are the 8 main causes and how to prevent each one.

    Key Takeaways

    • It’s not every day you see a flying fish, and hopefully, you’ll never see a fish leaping out of your aquarium. This behavior can be an indicator that something is wrong in the aquarium.
    • If your fish jump out of their aquarium, this can mean there is an imbalance in the system.
    • There are many ways to prevent your fish from jumping out of the aquarium, though some species are naturally inclined to display this behavior.

    Why Do Fish Jump Out Of Water?

    If you had to search this question, then it’s likely too late for your fish. But it’s a great question to ask as a fish jumping out of water can indicate some major problems in the aquarium. This includes stress, bullying, and your fish being frightened by outside factors. At the same time, some species of fish are just natural jumpers, no matter how your tank is set up.

    8 Reasons

    1. Stress

    Stress is the number one reason why fish jump out of the aquarium, mostly from water parameter issues. However, illness and maintenance stress can also have an effect.

    2. Water Issues
    Green Water in Aquarium

    While we love the fish tank hobby, these conditions aren’t natural for fish. Many species migrate hundreds of miles in between the wet and dry months, sometimes even between freshwater and brackish conditions. We simply can’t recreate these changing environments in the aquarium though most species have adapted well to a more confined and stable space of living.

    That being said, when conditions become inopportune, the fish will try to leave. This can result in the fish jumping out of the tank in hopes of finding a more favorable environment.

    The leading cause of a jumping fish is poor water quality, namely due to ammonia, nitrite, nitrate, pH, or water temperature. If ammonia or nitrite levels are allowed to get too high, the water can become toxic; high nitrate levels can also become uncomfortable for fish over time. Swinging pH levels and water temperatures can also cause your fish to become unable to regulate its body, leaving only one way out.

    3. Illness
    Freshwater Ich

    Stress from disease and illness is another common reason for fish jumping out of the aquarium. Many skin parasites cause fish to develop sores and lesions across their body which can be itchy and painful. In response, fish ‘flash’ or quickly twitch randomly, sometimes against objects in the aquarium. Unfortunately, this random motion can cause them to jump right out of the top of the fish tank.

    Some diseases and illnesses also infect the gills. This can make it difficult for dissolved oxygen to be absorbed into the bloodstream, causing the fish to feel like it’s suffocating. In an attempt to find better conditions, the fish may jump out of the aquarium.

    4. Maintenance Stress

    Another reason fish jump out of the aquarium–through one you’re likely to catch in time–is due to maintenance stress. This includes times when your hands are in the tank, like when trimming plants or doing water changes. Luckily, fish will get used to your presence over time, especially if you follow a schedule. If you’re too quick with your motions though, fish might get scared and look for a quick escape route.

    5. Bullying

    Some aquarium fish jump out of the water to escape predators and other bigger fish. This is especially true if a schooling fish species is kept alone outside of a school.

    It is natural for fish to chase each other every now and then, even fish of the same species. However, problems can occur when this chasing turns into harassment or bullying. If your fish doesn’t have a good defense mechanism, then it’s left to shelter in hiding places or escape the predator altogether by jumping across the water surface and out of the tank.

    Not enough open space to swim. It is also possible for fish to jump out of their tank if space is limited. This usually happens in addition to bullying or poor water quality, but fish have been known to seek more space outside the confines of their tank. If your fish look cramped, then they probably are. Fix it before it’s too late!

    6. They Get Scared

    Why do fish jump out of the water when they’re scared? It seems counterintuitive.

    Many fish kept in the aquarium hobby are not predators, meaning they are prey that are reactive to their surroundings; when danger is near, they swim away. There isn’t any way to ensure that your fish will never get scared, but there are ways to make them more comfortable within their environment.

    1. Keep schooling species in groups. The better majority of tropical fish species require being kept in small groups. In the wild, these groups are used as protection from predators, providing safety in numbers. The bigger the group, the safer and less reactive your fish will feel.
    2. Limit activity around the outside of the tank. Aquarium fish get used to their surroundings. Change isn’t often, so whenever something happens out of the ordinary, fish will react. This is especially true for stimuli outside of the tank which can appear as shadows and bright lights outside the aquarium.
    3. Use friendly lighting. Unfortunately, many aquarium lights, especially freshwater ones, do not provide a ramp-up/down setting. This is when the light slowly turns on or off in a set period of time, allowing for a more subtle awakening and less chance of a jumping fish.

    7. Not Enough Food

    Pellet Foods

    In the wild, fish migrate depending on food availability and for spawning grounds. In a fish tank, food needs to be supplied to keep fish and invertebrates alive. Some aquarium keepers have had luck keeping some species alive in closed conditions, where fish and invertebrates rely on each other and plants as a source of food, but this is difficult to achieve.

    Certain species, like Otocinclus, refuse common aquarium foods though and rely solely on the algae that naturally grows in the tank. While most fish will starve before they jump out of the tank, there is always the possibility that they try to venture into new areas for food.

    8. Water Flow Is Too Strong

    This isn’t likely to happen, but too much or overly strong water movement can push fish right out of the tank. Fish species that swim directly under the water’s surface are most prone to this as they get directly hit by filter and powerhead returns.

    Plan ahead and coordinate where your fish like to swim with where water will circulate.

    How To Prevent Jumping

    If you’re reading this before you’ve had a fish jump out of your tank, then congrats! You’re one step ahead of making sure your fish live a safe, healthy, and happy life.

    Luckily, it is pretty easy to make your aquarium safe for all fish. Here are a few ways to stop fish from jumping out of your tank.

    1. Provide A Safe Environment

    A good tank setup cannot be understated. Lots of thought goes into aquascaping, and for a good reason.

    There are a few checkpoints you need to hit when setting up an aquarium. Inside the tank, you need to have a balance of available hiding spots and open swimming space. Fish need structure and shade to rest and to escape if they feel threatened by other fish. They also need plenty of open swimming space to stay enriched and to exercise.

    You also need to create a safe environment on the outside of the tank. A fish tank should be kept in a relatively calm and quiet location without flashing lights or loud sounds.

    2. Pick Compatible Tank Mates

    <a href=Serpae Tetra Fish” class=”wp-image-1060036″/>

    Picking compatible tank mates is important for long-term aquarium success. You do not want a predator/prey situation where fish get eaten, are stressed out, or end up jumping out of the aquarium. Try to keep community fish with other community species. Keep predatory and aggressive fish with other predators.

    3. Get An Aquarium Lid

    The easiest way to keep fish inside the tank is to get an aquarium lid. Over the past decade, aquarium lids have fallen out of favor due to their clunky appearance, advances in tank lighting, and a better understanding of gas exchange.

    There are many benefits to using an aquarium lid, like lessening evaporation rates, increasing heating ability, and, most importantly, keeping fish inside the tank. For the most part, even if fish happen to jump and hit the lid, they can make a full recovery.

    There are a few drawbacks to using an aquarium lid, though. Apart from their clunky appearance, aquarium lids can limit the type of lighting fixture that can be used on the tank. This becomes especially problematic for saltwater hobbyists that need strong overhead lights. To keep fish in the tank but also get the best lighting possible, many saltwater enthusiasts use fish-safe nets that keep most sized fish from escaping; nets need to be reinforced when keeping larger fish.

    For freshwater fish, the higher-end lids are made of low-iron glass.

    4. Set Your Lights On A Schedule

    Consistency is key for freshwater and saltwater aquariums. Any change can throw your system off balance, which can take weeks or months to correct. One of the most understated parameters that should be regulated is lighting.

    Lighting should be predictable for fish. This allows them to have a set sleep/wake cycle that keeps stress down. To help make this transition even smoother, a light with a programmed dimmer or an external dimmer can be used to ramp up and down into daylight or moonlight.

    As previously mentioned, ambient lighting and sudden flashes of light outside the aquarium should be regulated.

    5. Keep Water Quality High

    The best way to keep your fish from jumping out of your aquarium is by keeping water quality stable. Keep in mind that having good water quality does not mean that your water parameters match ideal standards. Instead, water quality should be in the ranges that work best for your aquarium.

    That being said, poor water quality, like high ammonia levels, should be addressed immediately to keep fish healthy. These levels can easily be checked with a reliable test kit.

    An aquarium heater should also be used to keep the water temperature stable.

    6. Plan For A Larger Tank

    We understand that a large tank is a big commitment. You need to pick the tank size that’s best for you. However, if you pick a small tank with the intention of upgrading in the near future, we suggest getting the big tank right from the start.

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    There are many pros and cons to having both small and big tanks, but it’s better to understock a big tank than to overstock a small tank. If you do end up with a smaller tank, then make sure to stock accordingly. In general, saltwater fish species need much more space than their freshwater counterparts.

    Known Freshwater Jumpers

    Many freshwater fish live at the top of the water column. This is common behavior for fish that catch food directly on the surface of the water or insects that fly above. Some fish even venture out of the water to lay their eggs on nearby vegetation. Other species have a labyrinth organ that allows them to breathe atmospheric air in case water conditions deteriorate.

    Lake Tebera Rainbowfish

    No matter the reason they’re at the surface of the water, these species are very capable to jump out of the aquarium. Some of these aquarium fish species include:

    • White Cloud Minnows (Tanichthys albonubes)
    • Rainbowfish (Melanotaeniidae family)
    • Hatchetfish (Gasteropelecidae family)
    • African Butterflyfish (Pantodon buchholzi)
    • Freshwater Eels and Loaches
    • Corydoras Catfish (Corydoras spp.)
    • Betta Fish (Betta splendens)
    • Silver Arowana (Osteoglossum bircurrhosum)

    One of the most famous freshwater jumper fish outside of the aquarium hobby is the Asian carp (Cyprinus carpio), also known as the jumping carp. These fish have been known to jump into boats while hunting for zooplankton and other organisms on the water surface!

    Known Saltwater Jumpers

    Saltwater fish are less likely to be found leaping out of the water in saltwater ecosystems due to the depth of marine environments. However, estuaries and lagoons are home to many fish and insects that create diverse ecosystems loaded with food at the surface.

    Melanurus Wrasse in Reef Tank

    Many of the saltwater fish that leap out of the aquarium are timid, streamlined fish that don’t mean to leave the tank water. These fish include:

    • Firefish (Nemateleotris magnifica)
    • Triggerfish (Balistidae family)
    • Rabbitfish (Siganidae family)
    • Wrasses (Labridae family)
    • Saltwater Eels

    That being said, there are a few accomplished wild jumper species in the saltwater world that are utterly unique and powerful. This includes the flying fish (Exocoetidae family), which uses wings to glide above the surface of the water. Another fish you might not even consider to be a fish, the great white shark (Carcharodon carcharias) is a voracious predator that uses its large body to propel up and out of the water to attack prey1.

    Obviously, you don’t need to worry about your great white escaping your tank, though!

    Final Thoughts

    Why do fish jump out of the water? For many reasons, some of the immediate concern and others not so much. Some fish, especially those that stay in the upper regions of the water column, have an instinctual behavior to jump. This could be in an attempt to catch food or lay eggs. In the aquarium, this could be a sign that something is wrong with the tank water or the aquarium setup.

    Luckily, it is relatively easy to prevent fish from jumping out of the aquarium. Unfortunately, this is a lesson most hobbyists need to learn at least once.


    🐟 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

  • Severum Cichlid Care Guide: The Hardy Alternative to Discus

    Severum Cichlid Care Guide: The Hardy Alternative to Discus

    Hard Rule

    Severum cichlids grow to 8-10 inches (20-25 cm) and need a 55-gallon minimum for a single fish. Do not house them in smaller tanks as juveniles with a plan to upgrade – they outgrow 30-gallon tanks quickly and the stress shows in their health.

    Table of Contents

    Severums are the fish people buy when they want discus but are not ready for the commitment. That is fine, because severums are hardier, more forgiving, and still stunning. But they still get big, still need warm water, and still become territorial when breeding. I have kept both for years and the biggest mistake I see is people putting severums in tanks that are too small because they bought them as juveniles. A 4 inch severum turns into an 8 inch severum faster than you expect. The discus alternative that forgives the mistakes discus never would.

    Discus beauty on a community tank budget.

    What Most Care Guides Get Wrong About Severum Cichlid

    Severums constantly get marketed as “poor man’s discus,” and while I understand the comparison. They’re both round, colorful South American cichlids. It sets the wrong expectations. Severums are their own fish with their own personality. They’re hardier than discus, more interactive, and significantly more territorial. I’ve seen keepers buy severums expecting a discus temperament and then get surprised when their severum starts rearranging the tank and bullying smaller fish. The other thing most guides understate is how big these fish actually get. A full-grown severum can hit 8-10 inches, and at that size, a 55-gallon tank is genuinely too small for a pair.

    They’re not a beginner fish. They need real space (55 gallons minimum, more is better), they’ll eat small tank mates, and they’ll demolish live plants. But for an experienced keeper who wants a large, personable South American cichlid with personality, severums are a great pick. Here’s everything you need to know to keep one successfully.

    The Reality of Keeping Severum Cichlid

    Severums are genuinely one of the easier large cichlids to keep. But easier does not mean effortless. Here is what you need to actually prepare for.

    They get bigger than you expect. People see juvenile severums at 3 inches in the store and think they stay that size. They do not. A full-grown severum hits 8 inches and needs a 55 gallon tank at minimum. A pair needs 75 gallons or more.

    They eat your plants. Severums are herbivores that will mow down soft plants like a lawnmower. Java fern, anubias, and other tough plants survive. Anything delicate is lunch. Plan your aquascape accordingly.

    They bond with their owner. Severums are one of the more interactive cichlids. They learn to recognize you, follow your movements, and some will take food from your hand. This is a fish with genuine personality.

    Pairs is aggressive. A bonded pair of severums guarding eggs will defend their territory fiercely. In a community tank, this can mean other fish get pushed into corners or harassed. You need enough tank space to give everyone room.

    Biggest Mistake New Severum Cichlid Owners Make

    Keeping them in a 29 or 30 gallon tank because they looked small at the store. Severums need room. A single fish needs 55 gallons, and if you plan on a pair, 75 is the starting point. Cramped severums become stressed, pale, and aggressive.

    Expert Take (Mark Valderrama, AquariumStoreDepot)

    If you want a large, personable cichlid that does well in a planted tank without the extreme demands of discus, a severum is the best option in the hobby. Go with a gold severum for maximum color or a green severum for a more natural look. Either way, you will not be disappointed.

    ASD Difficulty Rating: Tier 2 – Intermediate

    Severum cichlids (Heros severus) are medium-large South American cichlids reaching 8-10 inches (20-25 cm). They need 55+ gallon tanks for a single fish, are mostly peaceful but territorial during breeding, and prefer warm soft water.

    Key Takeaways

    • Severum cichlids are large, docile, and wonderful species to introduce to a home tank 
    • They are one of the very few Cichlid species that are partial vegetarians and frugivores
    • They are beginner-friendly and do well in a variety of tank conditions
    • While their temperament is on the peaceful side, they may eat fish that fit in their mouths

    An Overview

    Scientific NameHeros severus
    Common NamesSeverum Cichlid, Banded Cichlid, Rainbow Severum Cichlid
    FamilyCichlidae
    OriginOrinoco and upper Rio Negro basins, South America
    DietOmnivore
    Care LevelModerate
    ActivityActive
    Lifespan7 to 10 years
    TemperamentSemi-aggressive
    Tank LevelBottom and mid
    Minimum Tank Size55 gallons
    Temperature Range75 F° to 84 F°
    Water Hardness4 to 6 dH
    pH Range6.0 to 7.5
    Filtration/Water FlowLow
    Water TypeFreshwater
    BreedingEgg-layers
    Difficulty to BreedEasy
    CompatibilityCommunity tanks (with large enough fish)
    OK, for Planted Tanks?With Caution

    Classification

    OrderCichliformes
    FamilyCichlidae
    SubfamilyCichlinae
    GenusHeros
    SpeciesH. Efasciatus (Heckel, 1840)

    What Is A Severum Cichlid

    Severum Cichlids have been in the aquarium hobby since the 1800s1 and the reasons are apparent: their pleasant personalities, large size, and unique and attractive color patterns have made them very popular to aquarists.

    These freshwater fish species are scientifically named Heros Severus while commonly known as Severum Cichlids, Rainbow Severum Cichlids, and Banded Cichlids.

    Apart from adding a diversity of colors to your aquarium, these fish can are one of the rare large fish that can actually be considered community fish (as long as the fish housed aren’t small enough to fit their mouths)

    Origin And Habitat

    Severum Cichlids, also labeled as a Poor Man’s Discus, hail from the upper Orinoco and upper Rio Negro Basins in South America.

    They were first sighted in the 1800s by an Austrian zoologist and ichthyologist named Johann Jakob Heckel. In their natural habitat, they inhabit slow-moving and vegetated areas with underwater trees and plants.

    Appearance

    Finding a fish that exhibits a beautiful spectrum of unique colors and patterns, pleasant personality traits, and the ability to bring liveliness to a traditional home aquarium is not impossible anymore.

    Severums Fish

    Severum Cichlids fit well in the showcase fish role. These Cichlid Fish come in different varieties, and each variety has a special color pattern that helps it stand out.

    , Severum Cichlids have large oval-shaped compressed bodies with a golden hue dispersed over their entire frames. These bands are visible along the sides and are more vivid in juveniles. Adult Severum Cichlids feature duller stripes. The fry feature consistent gold colors that become flecked with burnt orange spots across a large part of their bodies and fins. There are almost 8 bands present on their bodies, which go dull as the fish ages.

    But awkwardly enough, noticing these bands in fry is hard. You can only see that clearly once the juveniles hit maturity.

    Severum Cichlids feature sharp anal and dorsal fins that look rather yellow. Their pectoral fins also look pointed. The first set of fins narrows down to a striking point. And in most fish, these fins extend past the caudal fin, giving them a round-shaped look.

    Apart from yellow dorsal fins, they have yellow eyes and beautiful tails with a combination of a white base and specks of yellow.

    These fish are sold in fish sizes when they are small, but they can grow to an impressive size if you properly look after them.

    Since there are different types, it is slightly hard to recognize the original one. To identify which one is real, look at the greenish-hued body combined with a golden-yellow underbelly. Nowadays, you can see alternations in their color patterns that are obtained by home breeding.

    These fish are well-known for their subtle orange. These fish will get more intense in color as they mature.

    Depending on what species you have, you can expect to see changed color morphs, as well as stripes. Some fish have large and vertical stripes, while others only exhibit extremely contrasting spots that sit perfectly with their yellowish-golden base.

    And unlike African and South American Cichlids, Severum Cichlids look flattened and are tall with a vertically rounded shape. The reason they are called poor man’s discus lies in the fact that they mimic the profile of the more pricey discus fish.

    To differentiate males from females, look at the size and markings on their gills. The male Severum Cichlid is larger and may develop a nuchal hump and extensions to its anal and dorsal fins. This makes the overall appearance more prominent compared to the female Severum.

    Another difference between males and females is the dark spot visible on the female’s dorsal fin. Females also lack patterning on their heads.

    Now it’s time to talk about the five most common varieties of Severum Cichlids!

    5 Common Varieties

    In the aquarium hobby, there are different types of Severum Cichlids. Introducing any type to your tank is a good change from the wild Severum Cichlids that have subdued colored bodies.

    Heros Severus

    This type of Severum Cichlid is the most recognized compared to others. It has yellow and golden spots, a flat body with pointed dorsal fins, and a tail. They sometimes feature dark stripes down their length and make a beautiful addition to dull aquariums.

    Heros Severus

    These fish is semi-aggressive around some specific species. Usually, they do well in a community tank, so make sure you select the right tank mates for them (we discuss tankmates later in this post).

    Heros efasciatus

    Heros efasciatus, Redhead Severum, or Red Shoulder Severum are the same fish. This type isn’t as common , but it is incredibly beautiful in its own right. They feature a golden base and bright red spots behind their gill covers, and a vibrant green color as well. 

    Heros efasciatus

    They are available as wild-caught, which makes them more sensitive to tank-bred species. Because they are in high demand, they command a high price tag at the local fish store.

    Heros liberifer

    Fish of this type feature a plain glistening white base that will sometimes look red or orange.

    They have prominent horizontal deep black stripes. Unlike Heros Severus, they are more aggressive and can give a tough time to their tank mates.

    Heros spurius

    This type of Severum Cichlid is duller than the others mentioned previously. They have hues and stripes visible all across their bodies, including their fins and tails. They can grow up to 7 inches in length.

    Heros Notatus

    You can find different color varieties with this type of Severum Cichlid. They is purple, orange, green, and yellow. They are known for their spotted bodies. This Severum Cichlid has spots all over their bodies, fins, and tails.

    Author's Note: Green Severum Cichlids are the most common and easily found type in pet stores. The Gold variety is the second most common type of Severum Cichlids found in the aquarium trade.

    Lifespan

    The average lifespan of a Severum Cichlid is around 5 years. With proper care, they can live as long as 10 years in an aquarium.

    This makes them a perfect pet for those fish owners who want to spend more time with their pets and establish a stronger connection with their aquatic friends.

    Average Size

    The Severum Cichlid is known to grow to an impressive size both in the wild and in a home tank.

    The Severum Cichlid can go as large as 8 inches. You need to focus on its diet, tank conditions, water quality, and what type of tank mates it has around it to ensure healthy growth. It will suffer from stunted growth as a result of stress. So, ensure there’s nothing in the tank that can stress your pet out.

    Care

    Severum Cichlid care is actually pretty basic compared to other large fish species. If you’re an ambitious beginner, and you understand their temperament, and what things fit them best in a home tank, you can have a great experience with them.

    The Severum Cichlid is a hardy fish capable of adapting to harsh conditions in the wild. Some fish cannot survive what they can peacefully put up with. But it doesn’t mean you should ignore regular maintenance and a proper tank setup.

    Severum Cichlid Fish

    The Severum Cichlid is a peaceful fish. Unlike other Cichlid species that can fight to the death over food or maintain control over their territory, they remain relatively calm.

    However, they can act potentially aggressively around other fish. It is territorial aggression or the overwhelming effect of attacking the smaller fish. Once they show aggression or signs of stress, make sure you separate them from the cause of stress. The Severum Cichlid can fall prey to diseases because of high levels of stress.

    Providing good care and a safe environment will create a strong preventive shield from diseases.

    Aquarium Setup

    Severum Cichlids get large and need an appropriately sized home to make themselves comfortable. A large environment with clean water will help stress low and your fish healthy.

    When it comes to setting up an aquarium, you should think about the Severums habitat in the wild. These fish come from murky waters that have low water flow. Knowing this, we do not want high water flow for our gentle giants. They are surface swimmers, so open space is ideal for them.

    Open space will get them to swim around, and a large space will keep aggression down. These fish, which gentle in nature can get territorial. A crowded tank will lead to disputes and fighting. Rocks are preferred over driftwood as these fish like to dig. They will stay active throughout the day.

    Tank Size

    Severum Cichlids don’t grow overnight. But while setting up their tank, considering their growth rate can help decide the size of the tank. Usually, a 55-gallon tank does best for a Severum Cichlid. Feel free to get a larger tank because it’s always better to invest in a spacious tank for your pet.

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    Baby Severum Cichlids grow half an inch a month. Once they get to a certain size, you will see a decline in their growth rate. It takes them 2 years to become 8 inches long. Depending on the number of species you have, you can go for a 70-100 gallon tank for fully grown Severum Cichlids and other fish of similar size.

    Water Parameters

    Severum Cichlids live in tropical water areas of South America. To provide them with the healthiest environment, maintaining the right water parameters is necessary.

    Keep the water temperature between 75 F° to 85 F°. Anything below this range will stress out your pet. The range can vary if you want to breed your fish though.

    For pH, keep it between 6.0 to 7.0. Make sure pH levels remain stable. Any drastic changes can harm your fish. As for water hardness, I recommend staying between 4 to 15 dGH.

    Filtration and Aeration

    Facilitating regular water changes is a great way to maintain a healthy tank environment.

    A freshwater tank can accumulate several nutrients from waste, such as nitrites, nitrates, and ammonia. Fish waste will contaminate your water quality.

    It’s better to make regular water changes of up to 20% to ensure a healthy environment. You can also use a high-quality canister or hang-on-back filter to keep the water well-oxygenated.

    Author's Note: Severum Banded Cichlids often gasp for air at the surface when the oxygen levels are low. This often leads to high levels of distress in the fish. If your fish constantly repeats it, it's time to clean out the aquarium water.

    Lighting

    Lighting is not an issue when it comes to Severum Cichlids. They mostly stay active throughout the day and rest throughout the night. A mild exposure to natural lighting is great.  You can also use light LED lights to monitor their activities or to enhance their appearance.

    Aquatic Plants And Decoration

    Designing the interior of your Severum Cichlid freshwater tank is one of the most enjoyable aspects of the aquarium hobby.

    In the wild, they thrive in highly vegetated water and use plenty of hiding spaces to rest in.

    While designing their tank, you can use different live plants, plastic caves, and castle accessories. Adding driftwood and rock formations are also some good choices.

    This way, your fish will stay busy exploring different things and feeling at home.

    While the Severum Cichlid needs hideouts, it is problematic for you to keep the decorative items in place. They have a tendency to dig below decorations. You need to to have them set at the tank glass bottom, so they don’t topple over if dug up.

    Live plants are a major challenge with Severums. While many guides you will find online will tell you there are some plants like Anubias and Hornwort that can survive, our experience tells us that this is not the case. Severums are best kept with aquarium rocks over live plants.

    Tank Maintenance

    Regular tank maintenance holds great value for the well-being of Severum Cichlid.

    Cichlids produce chunks of bioload. Apart from getting a good-sized canister filter, you should clean the tank every now and again to keep decorative items, the tank, and the underwater environment clean.

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    Here are some tank-cleaning tips to get you started:

    • Occasionally trim the plants and remove plant material from the tank.
    • Use aquarium water and a clean toothbrush to wash caves and other decorative items
    • Use an algae scrapper to clean off algae from the tank walls.

    Substrate

    Severum Cichlids will dig around a lot. They love to create hills and pits by moving sand. You don’t have to be too creative with layering the base since they will redecorate it anyway.

    I recommend using a fine sand substrate for the Severum tank. You can also use a little bit bigger grains but don’t good too large on the gravel as large gravel can injure these fish when they try to dig

    Pro Tip: In community tanks that need softer water. You can layer the top of the substrate. You can use Indian almond leaves or small clumps of peat moss. This will benefit water conditions. Using leaves will also help create the effect of their natural habitat. Also, make regular replacements as the debris deteriorates.

    Is the Severum Cichlid Right for You?

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

    • Great for keepers who love the discus look but want easier care. Severums tolerate a wider range of water conditions and are far more forgiving.
    • Need at least 75 gallons for a pair. These fish get big, and they need room to establish territories without constant conflict.
    • One of the more personable cichlids. They recognize their owners and develop distinct behavioral patterns over time.
    • Not ideal for planted tanks. Severums are known plant eaters. They’ll systematically destroy most aquarium plants.
    • Good for semi-aggressive community tanks. They coexist well with similar-sized South American cichlids, large tetras, and plecostomus species.
    • Skip if you want a hands-off tank. They produce significant waste and need strong filtration plus regular water changes.

    Community Tank Mates

    Placing your Severum Cichlid with the right kind of tank mates will help in the long run. No beginner can afford frequent conflicts among fish. Not only that, incompatible tank mates can turn a healthy fish into a stressed one.

    Severum Cichlids are peaceful. But they habitually love colonizing the entire tank. You can prevent this by creating necessary barriers within the tank without curtailing their land and freedom to roam around.

    <a href=Altum Angelfish in Planted Tank” class=”wp-image-551860″/>

    For a Severum Cichlid tank, you should look for medium or larger mellow fish species that can make compatible tank mates.

    Here’s a list of some of the best species to consider.

    Poor Tank Mates

    Avoid larger and more aggressive fish species to pair up with Severum Cichlids. These aggressive tank mates should never be kept in the same tank as your Severum Cichlid.

    <a href=Green Terror Cichlid in Aquarium” class=”wp-image-545177″/>

    Unlike other Cichlid species, Severum Cichlids don’t realize they have the ability to defend themselves. Avoid these other species when it comes to Banded Cichlid tank mates:

    Breeding

    Breeding Cichlids is a wonderful experience as these fish will breed in pairs and will care for their fry. In order to pull it off, you will need to start up with several juvenile fish – at least to start out. They will need to grow up together until you see a couple pair up. That is your sign that a breeding pair is forming

    However, these Severum Cichlids are selective about who they decided to breed with. Keep them together and hope that they bond. It will take up to 6 months for cichlids to go from juveniles to forming as a pair. You will need to be patient and understand that this takes time.

    Once you have a breed, it’s time to set up the environment. Here is what you need to do:

    1. Obtain a separate tank to use for breeding the pair.
    2. Set the temperature higher – 78 – 81 degrees F to be exact
    3. Keep plenty of decor and hiding plants for comfort
    4. Feed the fish a well-balanced diet. A healthy fish will actively breed, so diet is key

    Once the pair do their thing, the eggs will hatch in about a week. Both parents will watch over the eggs and raise the fry together. Work with crushed flake food to feed the fry or use enriched hatch brine shrimp.

    Food and Diet

    The Severum Banded Cichlid is an omnivore. They are hardly picky and, therefore, will feast on anything you drop in their tank.

    To spice up their menu, feel free to go for high-quality herbivore and carnivore flakes.

    You can also feed them pellets, micro worms, earthworms, bloodworms, marine crustaceans, white mosquito larvae, brine shrimp, green vegetables, and even fruit.

    Don’t feed your pet beef heart or liver as they have fragile digestive systems and can fall ill from it.

    Common Health Problems

    Like any other fish, Common Severum Cichlid species can also fall prey to different diseases. You should always keep an eye out for common symptoms so that you can treat them on time.

    Here are some common diseases Severum Cichlids are susceptible to.

    Head and Lateral Line Erosion (HLLE)

    This disease is common in fish species raised in tanks with poor water quality. Other common reasons is over-filtration with toxic chemicals, stress, vitamin deficiency, and poor diet.

    The most common symptom of this disease is a hole in the head of the fish

    It begins as small pits of receding skin around the fish’s head and lateral line and sometimes occurs on the unpaired fins. To treat this, simply isolate your pet, get water conditions fixed and supplement its diet with vitamin C, calcium, and phosphorus.

    Ich

    Ich is a very common fish disease. The presence of an external protozoan parasite causes this infection.

    Some common symptoms are:

    • Multiple small white spots on the fish’s body and gills
    • Frequent scrapping of the body against hard objects
    • Abnormal behavior

    FAQs

    Is Severum a hardy fish?

    Yes, Severum cichlids are very hardy. They can withstand harsh environmental conditions but still need proper tank conditions to thrive. If they are properly looked after, they can provide you with enjoyment for a very long time.

    Can Oscars and severums live together?

    Severum Cichlids are semi-aggressive. Some species can be on the more aggressive side, while others stay pretty composed. But their large size and toughness allow them to stand up to an Oscar. The behavior Severum Cichlids display in a tank shared with an Oscar is not problematic. But make sure there is no aggression from the other side as well.

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    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.

    What It Is Actually Like Living With Severum 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 are gentle giants. For a fish that reaches 8 inches, severums are remarkably docile. They coexist with smaller fish like tetras and corydoras without issues, as long as the tank mates are too big to fit in their mouth.

    They have moods. Severums change color based on mood and stress level. A happy, dominant severum shows vivid bars and bright colors. A stressed one fades to a pale, washed-out version of itself.

    Plant destruction is real. I cannot overstate this. If you put delicate stem plants in a severum tank, they will be eaten. Use java fern, anubias, and bolbitis. Everything else is at risk.

    They pair bond for life. Severums form strong pair bonds and will breed repeatedly once established. The courtship behavior is fascinating to watch, and both parents participate in guarding the eggs and fry.

    How the Severum Cichlid Compares to Similar Species

    The obvious comparison is discus, and I’ll be direct: severums are the better choice for 90% of fishkeepers. Discus need pristine water quality, temperatures above 82°F, soft acidic water, and a carefully controlled diet. Severums thrive in a much wider range of conditions. Standard tropical temperatures, moderate pH, and they’ll eat practically anything. Discus are more visually refined and come in more color varieties, but severums offer 80% of the visual impact with about 20% of the difficulty. The main downside of severums compared to discus is aggression. Severums will hold their own in a community, which discus won’t.

    The uaru cichlid is a less common but worthwhile comparison. Uarus are similar in size and shape to severums but are calmer and more social. Both are herbivorous grazers that will destroy plants. Uarus are rarer in the hobby and harder to find, but if you can source them, they offer a gentler temperament with similar care requirements.

    Closing Thoughts

    Severums are the discus you can actually keep without losing sleep.

    I hope you learned a lot about Severums from our article. They are an underrated fish, and in my opinion, the label of poor person’s cichlid doesn’t jive well with me. They stand on their own in an aquarium and make a settler showcase fish. Their gentle nature makes them one of the rare large fish that will tolerate tank mates and is hardy. Give them a chance, and they will shine and give you many years of joy.

    Have you kept Severums in the past? Let us know in the comments. Until next time!

  • 16 Orange Fish for Your Aquarium: 9 Freshwater and 7 Saltwater Species

    16 Orange Fish for Your Aquarium: 9 Freshwater and 7 Saltwater Species

    Orange is one of those colors that genuinely pops in a tank. I’ve kept a good number of the species on this list over the years, including clownfish in my 125-gallon reef and various orange cichlids on the freshwater side. It’s a color that spans some really different habitat types, from African rift lakes to Pacific coral reefs. But here’s what most “orange fish” lists skip: not all of these species belong in the same tank, the same skill level, or even the same water type. Some are easy. Some are brackish. Some will terrorize everything else you own.

    This guide tiers them honestly by difficulty, not just by how good they look in a photo.

    EXPERT TAKE | MARK VALDERRAMA

    After 25+ years in the hobby, I’ve watched beginners fall in love with orange fish photos and buy species completely wrong for their setup. The orange chromide is a brackish fish. Most peacock cichlids need a species-dedicated African rift lake setup. Clownfish need a saltwater system. Color is not a compatibility guide. Know your water type and your skill level before you buy.

    Key Takeaways

    • Orange aquarium fish span freshwater, brackish, and saltwater habitats. You cannot mix these carelessly.
    • The easiest orange fish (platies, swordtails, Endler’s) are all livebearers. If you’re new, start there.
    • The most visually striking orange fish (peacock cichlids, clownfish) require intermediate to advanced setups.
    • Some “orange” fish are aggressive or semi-aggressive and will destroy community tanks.
    • Color morph labeling is inconsistent in stores. Know the species name, not just the color trade name.

    TIER BREAKDOWN

    Beginner: Platies (Mickey Mouse, sunset), swordtails, Endler’s livebearers
    Intermediate: Aulonocara peacock cichlids (orange blaze), convict cichlids (orange variants), angelfish (koi/sunset morph), orange chromide (brackish)
    Advanced: Clownfish (saltwater + host anemone considerations), Flowerhorn cichlids (large tank, high aggression)

    Freshwater Orange Fish

    1. Platy (Xiphophorus maculatus) – Orange/Sunset Variants

    Platies are the easiest fish on this entire list. Period. Sunset platies and Mickey Mouse platies are common color morphs that reach 2.5 inches (6.4 cm) and tolerate a wide pH range (6.5 to 8.2). They’re livebearers that breed readily and need no special water treatment. Minimum tank: 10 gallons (38 L). If you want orange fish without any complexity, this is your answer.

    2. Swordtail (Xiphophorus hellerii) – Red/Orange Varieties

    Swordtails grow larger than platies at 4 to 5 inches (10 to 12.5 cm) and the males carry an elongated lower tail fin. Orange and red-orange color forms are widely available. They’re active, hardy, and easy to keep. One note: males can be aggressive toward each other. Keep one male per tank unless it’s large enough to establish separate territories. Minimum tank: 20 gallons (76 L).

    3. Endler’s Livebearer (Poecilia wingei) – Orange Strains

    Endler’s livebearers are small (males under 1 inch / 2.5 cm), brilliantly colored, and bulletproof by nano fish standards. Several orange and orange-black strains exist. They breed fast, so keep males only if you don’t want a population explosion. pH tolerance is wide (6.5 to 8.5). Minimum tank: 5 gallons (19 L).

    4. Aulonocara Peacock Cichlid – Orange Blaze

    Peacock cichlids from Lake Malawi are among the most stunning orange freshwater fish available. Orange blaze aulonocaras and OB (orange blotch) peacocks develop brilliant coloration in males. They grow to 5 to 6 inches (12.5 to 15 cm) and need hard, alkaline water (pH 7.5 to 8.5, hardness 10 to 20 dGH), which is the opposite of what most freshwater fish need. African rift lake chemistry is non-negotiable. They’re semi-aggressive and do best in Lake Malawi-specific community setups. Minimum tank: 55 gallons (208 L).

    5. Orange Chromide (Etroplus maculatus)

    The orange chromide is a brackish water cichlid from India and Sri Lanka. It reaches 3 inches (7.5 cm) and develops orange body coloration with red-edged scales when healthy and comfortable. The important distinction: they need brackish water conditions (specific gravity 1.002 to 1.010), which means a separate tank from standard freshwater species. They’re peaceful for a cichlid but will not thrive long-term in pure freshwater. Minimum tank: 30 gallons (114 L).

    6. Convict Cichlid – Orange/Pink Variants

    Leucistic and “pink” convict cichlids have an orange-pink coloration that’s eye-catching. Standard convicts grow to 4 to 5 inches (10 to 12.5 cm) and are extremely territorial, especially during breeding. They will bully and kill tankmates. Don’t put them in a community tank expecting peaceful cohabitation. They’re fascinating to watch and easy to breed, but they need to be kept with similarly sized, aggressive species or in a species-dedicated tank. Minimum tank: 30 gallons (114 L).

    7. Koi Angelfish / Sunset Angelfish

    Koi angelfish and sunset angelfish morphs carry orange, yellow, and white patterning on the classic angelfish body. They grow to 6 inches (15 cm) tall and need tall tanks. Peaceful in most community setups but will eat small fish (nano tetras, small rasboras) once they reach adult size. Water should be soft and slightly acidic for best coloration. Minimum tank: 30 gallons (114 L), tall configuration.

    8. Firemouth Cichlid (Thorichthys meeki)

    Firemouth cichlids have a brilliant orange-red throat and belly, most visible when flaring during territory disputes. They grow to 5 to 6 inches (12.5 to 15 cm) and are semi-aggressive Central American cichlids. They dig substrate and will rearrange planted tanks. Good choice for a Central American biotope or a tank with robust cichlid tankmates. Not a community fish. Minimum tank: 30 gallons (114 L).

    9. Pumpkinseed Sunfish (Lepomis gibbosus)

    Pumpkinseed sunfish are North American natives with spectacular orange-green-blue patterning. They grow to 6 inches (15 cm) and are cold water fish (55 to 72 degrees F / 13 to 22 degrees C). They need a large tank, cool temperatures, and a diet of live or meaty foods. Not for tropical community tanks. Best suited for experienced hobbyists who want a native cold water species setup. Minimum tank: 75 gallons (284 L).

    Saltwater Orange Fish

    10. Clownfish (Amphiprioninae spp.) – Ocellaris and Percula

    Clownfish are the most iconic orange fish in the hobby. Ocellaris clownfish (the Nemo fish) are hardy and a genuine beginner saltwater option. Percula clownfish are slightly less forgiving. Both reach 3 to 4 inches (7.5 to 10 cm). The “do I need an anemone” question comes up constantly: no, you don’t. Clownfish do fine without host anemones. But if you do add one, research host anemone compatibility first since not all anemones work. Minimum tank: 20 gallons (76 L) for a pair.

    11. Royal Gramma (Gramma loreto)

    Royal grammas are half purple, half orange-yellow and are one of the most beginner-friendly saltwater fish available. They reach 3 inches (7.5 cm) and are reef-safe. They establish a small territory in the rockwork but are otherwise peaceful. Minimum tank: 30 gallons (114 L).

    12. Flame Angelfish (Centropyge loricula)

    Flame angelfish are brilliantly orange-red with black vertical bars. They grow to 4 inches (10 cm) and are considered reef-risky: they may nip at coral polyps or clam mantles. Keep with caution in reef tanks. Hardy for a marine angelfish, but needs an established aquarium with plenty of rock structure. Minimum tank: 30 gallons (114 L).

    13. Mandarin Dragonet (Synchiropus splendidus)

    Mandarin dragonets have orange as part of their extraordinary psychedelic patterning. They’re also one of the most challenging fish in the hobby. They need a steady supply of live copepods and almost universally refuse to accept prepared or frozen food unless trained over months. A well-established refugium with a thriving copepod culture is mandatory. Only for experienced marine hobbyists. Minimum tank: 30 gallons (114 L) with full refugium setup.

    14. Lawnmower Blenny (Salarias fasciatus)

    Lawnmower blennies show orange-brown mottled coloration and are functional aquarium workers: they graze film algae off rock and glass. They reach 5 inches (12.5 cm) and are reef-safe. They can be territorial with other blennies. Minimum tank: 30 gallons (114 L) with established algae growth.

    15. Copperband Butterflyfish (Chelmon rostratus)

    Copperband butterflyfish show orange-banded patterning and are often recommended as Aiptasia-eating solutions. The reality is more complicated: they’re delicate, often refuse prepared food, and many specimens never transition to a captive diet. Not a beginner fish. Only add one if you’re prepared to target-feed daily and have a refugium to fall back on. Minimum tank: 75 gallons (284 L).

    16. Anthias (Pseudanthias spp.)

    Anthias are brilliantly colored reef fish, many in orange and pink tones. They’re active schoolers that need multiple feedings per day with meaty foods. They’re demanding and don’t tolerate poor water quality or irregular feeding. Best suited for established reef tanks with experienced owners. Minimum tank: 70 gallons (265 L) for a small group.

    MARK’S PICK

    For freshwater: the sunset platy. Easiest fish on the list, reliable orange color, no special water chemistry needed. For intermediate freshwater: aulonocara peacock cichlids (orange blaze) in a properly set up Lake Malawi tank. For saltwater: ocellaris clownfish. Hardy, iconic, and actually beginner-appropriate in saltwater. Avoid the chromide and mandarin dragonet unless you know exactly what you’re getting into.

    Orange Fish Comparison Table

    Species Difficulty Max Size Min Tank Key Trait
    Sunset Platy Beginner 2.5 in (6.4 cm) 10 gal (38 L) Easiest, widest pH tolerance
    Swordtail Beginner 5 in (12.5 cm) 20 gal (76 L) Hardy, males territorial
    Endler’s Livebearer Beginner 1 in (2.5 cm) 5 gal (19 L) Nano-friendly, prolific breeder
    Peacock Cichlid (Orange Blaze) Intermediate 6 in (15 cm) 55 gal (208 L) Hard alkaline water required
    Orange Chromide Intermediate 3 in (7.5 cm) 30 gal (114 L) Brackish water, not freshwater
    Clownfish (Ocellaris) Beginner (SW) 4 in (10 cm) 20 gal (76 L) Hardy saltwater, reef-safe
    Flame Angelfish Intermediate (SW) 4 in (10 cm) 30 gal (114 L) Reef-risky, may nip coral
    Mandarin Dragonet Advanced (SW) 3 in (7.5 cm) 30 gal (114 L) + refugium Live copepods required

    Should You Get Orange Fish?

    Good fit if:

    • You want eye-catching color in a beginner setup (start with platies, swordtails, or Endler’s)
    • You have an established Lake Malawi tank and want orange-blaze peacock cichlids
    • You’re ready for saltwater and want a reliable, iconic species (ocellaris clownfish)
    • You have a mature reef and want functional color (royal gramma, lawnmower blenny)

    AVOID IF

    You’re searching by color and buying without knowing the water type or care requirements. The orange chromide is brackish, not freshwater. Peacock cichlids need hard alkaline water that will kill soft-water community fish. Mandarin dragonets require live copepod colonies that most hobbyists can’t maintain. Firemouth cichlids will destroy a peaceful community. Buy by species, not by color.

    Closing Thoughts

    Orange fish exist across every level of the hobby and every type of water. The key is being honest about what you’re getting into before you buy. If you’re a beginner, platies and swordtails give you reliable orange color with virtually no complexity. If you’ve got an African rift lake setup running, the aulonocara orange blaze peacock is a showstopper. And if you’re in saltwater, a healthy pair of ocellaris clownfish in a well-maintained tank is hard to beat.

    For the best selection of orange fish and expert advice on stocking, check out Flip Aquatics and Dan’s Fish.

    References

    • Froese, R. and D. Pauly. Editors. FishBase. www.fishbase.org
    • Seriously Fish. Species profiles. www.seriouslyfish.com
    • Practical Fishkeeping Magazine. Orange and color-themed fish guides.