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  • Zebra Danio Tank Mates: My 21 Picks After Years in the Hobby

    Zebra Danio Tank Mates: My 21 Picks After Years in the Hobby

    I’ve kept zebra danios and they’re about as bulletproof as freshwater fish get. hardy, active, and incredibly easy to care for. But that high energy level is exactly what trips people up when selecting tank mates. These fish need space to zoom around, and I wouldn’t attempt a community setup in anything smaller than a 20-gallon tank. Add in their preference for cooler water and you have two things most people don’t think about until it’s too late. In this guide I’ll walk you through my 21 top picks. and the combinations to avoid.

    Key Takeaways

    • The zebra danio is a hardy, active fish that can be kept with a variety of species.
    • These fish do best in a coldwater setup but can be acclimated to warmer conditions.
    • Some of the best zebra danio tank mates are tetras, rasboras, and corydoras.
    • Tank mate species to avoid include bettas, aggressive cichlids, and fish with large mouths.

    Intro

    Before we can talk about tank mates, we need to understand zebra danio care.

    Zebra danios, scientifically known as Danio rerio, are highly adaptable freshwater fish native to many regions throughout Asia. These fish can be found in cold to hot fast-moving or stagnant conditions across India, Pakistan, Nepal, Bangladesh, and Bhutan; they have been introduced to many other regions of the world, including South America and North America. They usually live alongside vegetation but don’t rely on it for survival1.

    Zebra-Danio

    These freshwater fish grow to be about 1 to 2 inches on average and are named after the alternating silver and bluish-black horizontal stripes along the sides of their body. They have a torpedo-shaped body that helps propel them through the water.

    Zebra danios are a very important species for science. They are considered a scientific model organism, which allows for many avenues of biological study. In fact, a zebra danio has even been sent to outer space! Interestingly, there is also evidence that zebra danios have memory, which means that they may experience some level of consciousness.

    Tank Size

    It is no wonder why the zebra danio is a favorite addition to the aquarium setting due to its high adaptability. These are easy-to-keep fish that bring a lot of movement to the upper portions of the aquarium.

    Zebra danios are a schooling fish, which means that you need to allow space for at least 6 or more individuals. In general, a school of zebra danios can comfortably fit in a 10 gallon aquarium with minimal other fish. However, a 20 gallon long aquarium will allow for a bigger school as well as other tank mates.

    Aqueon 20 Gallon Tank
    Aqueon 20 Gallon Tank

    A classic 20 gallon aquarium in its 30 inch long variant. A very popular aquarium.

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    Water Temperature

    One of the most important aspects to keep in mind when keeping zebra danios is their need for cooler water conditions. While these peaceful fish have been documented across a 50 degree range, they seem to do best when the water temperature is kept stable between 65-82° F.

    ⚠️ The biggest tank mate mistake I see: Fishkeepers pair zebra danios with tropical fish that need warmer water, or slow-moving species that can’t handle their energy. Danios are fast and constantly on the move. timid or slow fish will be stressed by them. Always match both temperature range and activity level when choosing tank mates, and remember: nothing smaller than a 20-gallon if you want this to work.

    The Top Zebra Danio Tank Mates

    Now that we have some understanding of where zebra danios come from and how they live in both their natural habitat and in the aquarium, we can start to consider some tank mate options.

    The best zebra danio tank mates will be able to live with an active fish in colder-than-normal water temperatures.

    1. Harlequin Rasboras

    Harlequin Rasbora
    Harlequin Rasbora

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

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    • Scientific Name: Trigonostigma heteromorpha
    • Tank Size: 10 gallons
    • Adult Size: 1-2 inches
    • Water Temperature: 71-80° F
    • Temperament: Peaceful

    Harlequin rasboras are small, colorful orange and black fish that resemble tetras. They are schooling fish that need to be kept in groups of at least 6 or more. Together, they are active swimmers that will stay in the middle portions of the aquarium.

    With more active fish, like the zebra danio, harlequin rasboras may school tighter together and be less active. However, with a larger tank, the two species will complement each other in terms of activity and color.

    2. Cory Catfish

    Albino Cory Catfish
    • Scientific Name: Corydoras spp.
    • Tank Size: 10 gallons
    • Adult Size: 1-5 inches
    • Water Temperature: 70-80° F
    • Temperament: Peaceful

    There are many different species of corydoras available in the aquarium hobby, coming in a variety of sizes. These are bottom-dwelling fish that like to school far away from zebra danios at the top of the water column. This distance, in addition to cories preferring slightly cooler-than-normal water conditions, makes them a good pairing for zebra danios.

    🏆 My top pick for a zebra danio tank mate: Cory catfish are my go-to recommendation. they occupy the bottom while danios work the top, so there’s zero competition for space. The shared preference for slightly cooler water makes the parameter match easy too. I’ve seen this pairing work beautifully, and it’s the first thing I suggest to anyone setting up a danio community tank.

    Some of the most popular Corydoras options include the bronze cory (Corydoras aeneus), pygmy cory (Corydoras pygmaeus), panda cory (Corydoras panda), and Sterba’s cory (Corydoras sterbai).

    3. Mollies

    Sailfin Molly in Aquarium
    • Scientific Name: Poecilia spp.
    • Tank Size: 15 gallons
    • Adult Size: 3-5 inches
    • Water Temperature: 72-82° F
    • Temperament: Peaceful to semi-aggressive

    Mollies are one of the most popular freshwater fish. Mollies are large fish that come in almost every color, with many different varieties available.

    They not true schooling fish, but they do enjoy the company of at least two to three others. This, in addition to their size, means that they are good feature fish for tanks over 10 gallons.

    It is important to note that while mollies are often seen as community tank fish, they are capable of showing aggression to other fish and each other, especially if there are multiple males in the tank during breeding times. They also prefer the upper portions of the water column. Because of this, it’s important to watch how your mollies and zebra danios interact.

    4. Swordtails

    Swordtail Fish in Planted Tank
    • Scientific Name: Xiphophorus hellerii
    • Tank Size: 20 gallons
    • Adult Size: 3-6
    • Water Temperature: 64-82 °F
    • Temperament: Peaceful to semi-aggressive

    Swordtails are very similar to mollies in terms of color, activity, and behavior. These fish come in all different color variations and are easily recognized by their extended tail fin. They can also be kept in cooler water temperatures.

    These fish are not a schooling species but exhibit shoaling behaviors in small groups with one male and several females. Swordtails are relatively active fish that like to stay in the upper portions of the aquarium. They can become aggressive towards other fish and their own if more than one male is present.

    While swordtails are generally peaceful towards zebra danios, hobbyists should look out for possible fin-nipping and competition during feeding times.

    5. Neon Tetras

    Neon Tetra
    Neon Tetra

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

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    • Scientific Name: Paracheirodon innesi
    • Tank Size: 10 gallons
    • Adult Size: 1.0-1.5 inches
    • Water Temperature: 72-82° F
    • Temperament: Peaceful, shy

    Neon tetras get along with most freshwater fish, and zebra danios are no exception. These small red and blue fish can be timid, especially when kept in smaller groups. Luckily, they only grow to be about an inch big, which allows for more room for keeping a bigger school. This is necessary as zebra danios can potentially stress them out.

    The good news is that neon tetras and zebra danios generally live in two different areas of the tank. Neon tetras usually stay in the middle and lower portions of the aquarium, away from the hustle and bustle of danios. Still, some extra decorations and hiding spots might encourage your tetras to be more present.

    6. Rummy Nose Tetras

    Rummy Nose Tetra
    Rummy Nose Tetra

    An easy to care for Tetra fish that loves to school. Very peaceful fish that are great for beginners

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    • Scientific Name: Hemigrammus bleheri
    • Tank Size: 10 gallons
    • Adult Size: 1-2 inches
    • Water Temperature: 75-85° F
    • Temperament: Peaceful, active

    Rummy nose tetras have a similar appearance and behavior to the zebra danio, but they’re a little more challenging to keep. These peaceful fish are identifiable by their bright red faces and can be seen swimming in schools in the upper portions of the water column.

    While rummy nose tetras make a good option for a zebra danio community tank, they are much more sensitive to incorrect and changing water conditions than other fish species. These fish do especially well in bigger groups in a heavily planted tank.

    7. Apistogrammas

    <a href=Apistogramma cacatuoides” class=”wp-image-1059938″/>
    • Scientific Name: Apistogramma spp.
    • Tank Size: 20 gallons
    • Adult Size: 2-3 inches
    • Water Temperature: 72-86° F
    • Temperament: Semi-aggressive

    If you want another fish species to be the star of your aquarium instead of your zebra danio school, then an Apistogramma cichlid might make the ideal tank mate. These dwarf fish are from South America and are one of the more peaceful species of cichlid available. They have a moderate temperament but will readily tolerate other small, peaceful fish.

    The trick to choosing good Apistogramma tank mates is selecting fish that can’t be mistaken for another cichlid and that stay out of their way during breeding periods. This makes the zebra danio a good option.

    8. Chili Rasboras

    Chili Rasboras
    Chili Rasboras

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    A great nano schooling fish. Males display brighter colors. Best in groups of 6 or more

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    • Scientific Name: Boraras brigittae
    • Tank Size: 10 gallons
    • Adult Size: <1 inch
    • Water Temperature: 70-82 °F
    • Temperament: Peaceful, shy

    If you’re looking for something even smaller than the zebra danio, chili rasboras are about as tiny as you can get. There are a few considerations that will need to be made before making these two tank mates, though.

    Chili rasboras are extremely small fish that grow to be less than an inch big. They love to school at the top of the water column but will scatter if threatened. Unfortunately, this can sometimes become problematic if you have an especially active or bold zebra danio.

    If you find that your chili rasboras are overwhelmed by your zebra danio school, then you may need to increase the size of your rasbora school, add more plants, or reconsider rehoming one of the species.

    9. Ember Tetras

    Ember Tetra
    Ember Tetra

    A small red tetra that grows up to 1.25 inches. A very peaceful schooling fish

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    • Scientific Name: Hyphessobrycon amandae
    • Tank Size: 10 gallons
    • Adult Size: 1 inch
    • Water Temperature: 72-80 °F
    • Temperament: Peaceful

    While not exactly the same, ember tetras are a good (and cheaper) alternative to chili rasboras. These two fish share some of the same orangey-red colors and ember tetras only grow to be a little bigger.

    Unlike chili rasboras, ember tetras are hardy fish that prefer the middle and lower portions of the water column. They take comfort in a school of 6 or more and can withstand the activity of a zebra danio school.

    For most hobbyists, ember tetras are a better addition to the zebra danio community tank than chili rasboras.

    10. White Cloud Minnows

    White Cloud Mountain Minnow
    White Cloud Mountain Minnow

    A very peaceful fish that does well in coldwater fish. Other minnow varieties are also available

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    • Scientific Name: Tanichthys albonubes
    • Tank Size: 10 gallons
    • Adult Size: 1-2 inches
    • Water Temperature: 57-72°F
    • Temperament: Peaceful, active

    White cloud minnows are one of the best zebra danio community tank mate options, period! This is because their tank size, adult size, water temperature, and temperament all align.

    White cloud minnows are not tropical fish and are instead, minnows. This means that they are incredibly hardy fish that can withstand a wide range of water temperatures and parameters. They are also active schooling fish that enjoy their own company and that of other fish species.

    11. Boesemani Rainbowfish

    Boesemani-Fish
    • Scientific Name: Melanotaenia boesemani
    • Tank Size: 40 gallons
    • Adult Size: 4-5 inches
    • Water Temperature: 72. 77° F
    • Temperament: Peaceful, active

    The Boesemani rainbowfish and the zebra danio is an odd pairing, but it’s doable! Both of these species are very active and a larger tank will be needed to comfortably keep both. While zebra danios will mostly stay towards the top of the tank, plenty of room should also be allowed for an active school of rainbowfish in the middle.

    This is an unusual pairing mostly due to color and activity levels. As long as temperatures match and there is room to swim, Boesemani rainbows can live alongside zebras.

    12. Cherry Barbs

    Cherry Barb
    Cherry Barb

    A popular freshwater fish from the barb family. One of the most peaceful barb fish

    Click For Best Price
    • Scientific Name: Puntius titteya
    • Tank Size: 25 gallons
    • Adult Size: 2 inches
    • Water Temperature: 73. 81° F
    • Temperament: Peaceful, sometimes shy

    Cherry barbs are one of the most ideal tank mates for zebras! Similar in size and activity, these two fish can comfortably live together as cherry barbs prefer the lower areas of the tank.

    That being said, these small barbs can sometimes be shy fish. It’s best to keep these fish in a larger densely planted tank with a good-size school. They can be somewhat sensitive to water parameters, so they should be safely acclimated and kept with good tank husbandry.

    13. Hatchet Fish

    Marble Hachet Fish
    • Scientific Name: Gasteropelecus sternicla
    • Tank Size: 20 gallons
    • Adult Size: 2-3 inches
    • Water Temperature: 72-81° F
    • Temperament: Peaceful

    If you’re looking for another fish to keep your zebra danios busy at the top of the tank, the hatchet fish will always be found just below the surface. While they don’t have the best vibrant colors, hatchet fish are one of the most interesting-looking fish species available!

    These fish are great for community tanks but need a tight aquarium lid as they’re notorious jumpers.

    14. Kuhli Loach

    Kuhli Loach
    Kuhli Loach

    Kuhli Loaches are hardy bottom-dwelling fish. Nocturnal in nature. Gets along with many fish and tolerate of coldwater environments

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    • Scientific Name: Pangio kuhlii
    • Tank Size: 20 gallons
    • Adult Size: 3-4 inches
    • Water Temperature: 73-86° F
    • Temperament: Peaceful

    No matter your tank setup, there is always room for a kuhli loach. These fish are incredibly silly and fit right in at the bottom of a community tank setup.

    Kuhli loaches aren’t true schooling fish, but they thrive in the company of their own. It is important to take careful consideration when introducing kuhli loaches into community tanks as hobbyists sometimes keep them at higher-than-normal water temperatures.

    Always make sure to keep an aquarium lid on to prevent your loaches from escaping!

    15. Platy Fish

    Sunset-Platy
    • Scientific Name: Xiphophorus maculatus
    • Tank Size: 10 gallons
    • Adult Size: 2-3 inches
    • Water Temperature: 64-77 °F
    • Temperament: Peaceful, prolific

    Platy fish are one of the most popular species of freshwater fish for beginner hobbyists and are one of the best tank mates for zebra danios. These community fish are colorful, active, and unbothered by other active species.

    However, platy fish are incredibly prolific and can quickly overpopulate an aquarium. This, in addition to being overall messy fish, can cause water quality problems.

    As long as populations and water quality are kept in check, then platy fish can comfortably live with zebra danios and an assortment of other fish!

    16. Otocinclus

    Otocinclus Catfish
    Otocinclus Catfish

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

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    • Scientific Name: Otocinclus spp.
    • Tank Size: 20 gallons
    • Adult Size: 2-4 inches
    • Water Temperature: 74-79°F
    • Temperament: Peaceful, shy

    Unlike the zebra danio, otocinclus are not beginner fish. In fact, these are some of the most difficult fish to keep due to their constant need for natural algae.

    Otocinclus are smaller fish that rely on each other for safety. They need to be kept in groups of at least 6 or more and need an established aquarium with plenty of natural biofilm. A densely planted tank is a must.

    Because these are some of the most challenging fish to keep and zebra danios are one of the easiest, these two species are not seen together often.

    17. Cardinal Tetras

    Cardinal Tetra
    Cardinal Tetra

    A very popular schooling fish. Looks like the Neon Tetra, but with longer blue and red stripes. Grows larger than a neon tetra as well

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    • Scientific Name: Paracheirodon axelrodi
    • Tank Size: 10 gallons
    • Adult Size: 1-2 inches
    • Water Temperature: 73-81° F
    • Temperament: Peaceful

    Slightly larger but more sensitive than neon tetras, cardinal tetras are great tank mates for danios. Cardinal tetras are colorful schooling fish that can be somewhat sensitive to both water quality and overactive tank mates. However, if they’re kept in a big enough school, they will feel safe to explore all corners of the tank, including where your zebra danios like to swim.

    Cardinal tetras don’t have any special considerations, but they do best when acclimated and kept with live plants.

    18. Honey Gourami

    Honey Gourami
    Honey Gourami

    One of the more peaceful Gourami fish available in the hobby. Has a unique yellow coloration and only grows up to 2 inches in length

    Click For Best Price
    • Scientific Name: Trichogaster chuna
    • Tank Size: 10 gallons
    • Adult Size: 2-3 inches
    • Water Temperature: 74-82° F
    • Temperament: Peaceful

    The honey gourami is a great feature species for a zebra danio tank. These fish are big and bold but gentle giants. Honey gouramis can be kept alone or in pairs, as long as the tank size allows.

    For the most part, the honey gourami makes a great tank mate for danios. Always make sure to keep an eye out for any potential fin-nipping between the two species. Zebra danios might take some interest in their thread-like pelvic fins.

    19. Nerite Snails

    Tiger Nerite Snails
    Tiger Nerite Snails

    These Nerite Snails will eat algae, are plant safe, and do not reproduce in your aquarium!

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    • Scientific Name: Neritina spp.
    • Tank Size: 10 gallons
    • Adult Size: 1-2 inches
    • Water Temperature: 65-85° F
    • Temperament: Peaceful

    If you don’t want to keep other fish with your danios, then nerite snails are ideal tank mates! These snails can’t reproduce in freshwater, so you don’t need to worry about them overpopulating. They are also efficient cleaners and will help keep the tank clean of any algae or uneaten food.

    20. Bristle Nose Pleco

    Bristlenose Pleco
    Bristlenose Pleco

    The Bristlenose Pleco is a smaller Pleco that does a great job of eating algae. Peaceful and gets along with most fish

    Click For Best Price
    • Scientific Name: Ancistrus cirrhosus
    • Tank Size: 30 gallons
    • Adult Size: 5 inches
    • Water Temperature: 73-80°F
    • Temperament: Peaceful

    If you want a cleanup crew member that’s a little more exciting than a snail, then bristle nose plecos are a great addition to the freshwater aquarium. These plecos grow to reasonable sizes and don’t need a pure vegetation diet. Instead, they’ll help keep the tank clean of leftover food and other organic debris, though they won’t clean up fish waste.

    21. Other Danios

    Leopard

    If you’re a danio fan, then there are a few other species you can safely keep with your zebra danios. While there aren’t many species of danio available in the aquarium hobby, some of the most popular include:

    • Giant danio (Devario aequipinnatus)
    • Pearl danio (Danio albolineatus)
    • Glowlight danio (Danio choprai)
    • Blue danio (Danio kerri)

    Apart from the giant danio, all of these species should have similar tank requirements, though exact specifications are needed.

    Bad Selections

    Though there are many great tank mates for zebra danios, there are a few that will never be compatible. Here are some species to avoid.

    Bettas

    Plakat <a href=Betta Fish” class=”wp-image-34308″/>

    Betta fish are aggressive fish that need their space. The last thing a betta will tolerate is a zebra danio zooming around its territory.

    These two fish are incompatible tank mates due to territorial aggression and overactivity of the Danio that will stress out the Betta.

    Aggressive cichlids

    <a href=Texas Cichlid” class=”wp-image-553069″/>

    For the same reasons, zebra danios will never be compatible with aggressive cichlids, like most African Lake species. Not only will these cichlids see danios as a threat to their territory, but they’ll also see them as food.

    Anything Big

    Arowana Fish

    That brings us to this next generalization. A zebra danio should never be kept with any species that could fit one of these small fish into its mouth.

    A zebra danio can easily entice a predator as it zooms across the tank and be mistaken for food as a result. For this reason, it’s best to keep these danios with similar-sized tank mates.

    FAQs

    What fish can you keep with a zebra danio?

    There are many fish that can be kept with zebra danios, but small tetras, rasboras, catfish, and loaches are some of the best choices! When picking a new fish for your zebra danio tank, water temperature and activity levels are the main factors to take into consideration.

    How many zebra danios should be kept together?

    These danios need to be kept in groups of at least 6 or more. Keeping less than this can cause individuals to become stressed out and reclusive. This might even lead to a premature death.

    Are zebra danios good community fish?

    Yes! Zebra danios are some of the best community fish available. These fish are extremely hardy and can be kept with most community species.

    Are danios fin nippers?

    Zebra danios can be fin nippers. It’s best to avoid long-finned tank mates or to increase the size of the school instead. This should help diffuse possible aggression.

    Can danios go in a tropical tank?

    Yes, zebra danios can be slowly acclimated to a warmer tank even though they prefer cooler temperatures.

    Conclusion

    Zebra danios are widely available fish. While they’re not the most colorful fish, they have bold stripes that catch the eye as they zoom across the tank. These fish are highly active and should be kept with tank mates that can tolerate their behavior. Luckily, many coldwater and freshwater species check this box!

  • How Long Do Fish Live? What I’ve Learned After 25 Years in the Hobby

    How Long Do Fish Live? What I’ve Learned After 25 Years in the Hobby

    After 25 years in this hobby, I’ve seen fish live surprisingly long lives. and heartbreakingly short ones. Koi are the most extreme example: there’s a famous koi named Hanako that was reportedly over 200 years old. But even in a home aquarium, the difference between a fish living 2 years versus 10 comes down to a handful of key factors. Diet and living conditions are the two biggest ones I’ve seen in my experience. In this guide I’ll break down the average lifespans of the most popular aquarium fish. and what actually determines how long they live.

    How Long Do Fish Live (By Category)

    There are over 30,000 fish species on the planet, ranging from tiny nano species to the majestic 60-foot whale shark1. Their lifespans seem to vary as much as their size and appearance, with some species surviving just a few months and others living for centuries! Check our video above for visuals from our YouTube Channel. We go over in more detail in our blog post so you can follow along with both!

    The average aquarium fish lives a few years with good care, although some species can live for a few decades. After reading this guide, you’ll see that there’s a lot of variation between the species.

    Size And Growth

    Unlike humans, fish are indeterminate growers, which means they continue to grow throughout their lives. It can be difficult to guess the age of a fish over at the pet store, but you can bet a large specimen has already reached a good age.

    Scientists have a more precise way of judging a fish’s age. They simply count the rings on their scales, kind of like the way you tell the age of a tree2. Unfortunately, there isn’t a lot of concrete scientific evidence about aquarium fish lifespans out there, so most of what we know comes from the experiences of other fish keepers.

    Of course, many factors can affect how long fish live. For example, a fish that can live for ten years might survive just a few hours in a tank with incorrect water temperature, or it could surprise you and live for 12 years.

    We’ll discuss some of the factors that affect fish longevity later in this post, but for now, let’s go ahead and dive into the average life expectancies of some popular aquarium fish you might consider keeping in your tanks.

    Small Fish Lifespans

    Betta-Fish-Looking-For Food

    Smaller fish tend to have short lifespans, although some nano species can live surprisingly long! You could expect your pets to reach these lifespans with good care and a bit of luck:

    Medium Species

    Lake-Tebera-fish

    The average medium-size fish lifespan is between 5 and 15 years, which makes this group of fish a similar commitment to other popular pets like cats and dogs. Read on to learn about some popular medium aquarium fish lifespans.

    • African Cichlids: 5-10+ years
    • Angelfish: 10-12 years
    • Blood Parrot: 5-15 years
    • Blue Acara: 8-10 years
    • Bristlenose pleco: 10-15 years
    • Common Goldfish: 10-15 years
    • Convict Cichlid: 8-10 years
    • Discus cichlid: 10-18 years
    • Fancy goldfish: 10-15 years
    • Glass catfish: 7-8 years
    • Jack Dempsey: 10-15 years
    • Molly: 3-5 years
    • Rainbowfish: 5-8 years
    • Rainbow shark: 5-8 years
    • Siamese Algae Eater: 5-10 years
    • Silver dollar: 10 years
    • Swordtails: 3-5 years

    Large Species

    Arowana Fish

    Larger fish tend to live longer, although they need proper care and a suitable aquarium to reach their full potential. Let’s take a look at some big fish lifespans.

    💡 A lifespan that still blows my mind: Koi are the most extraordinary example of fish longevity in the hobby. The famous koi Hanako was reportedly over 200 years old when she died in 1977. verified by scale ring analysis. Most koi in home ponds already live 25. 35 years with good care, which is remarkable for any fish. It’s a powerful reminder of just how much proper conditions matter.

    • Arowana: 10-20 years
    • Bala shark: 10 years
    • Bichirs: 10-15 years
    • Black ghost knife fish: 10-15 years
    • Blood Parrot: 5-15 years
    • Clown loach: 10-15 years
    • Dojo loach/Weather loach: 10-15 years
    • Flowerhorn cichlid: 8-12 years
    • Koi fish: 25-35 years, but can over 60 years!
    • Oscars cichlids: 10-15+ years
    • Plecos: 10-20 years
    • Red-tailed Catfish: 15-20 years
    • Severum: 10 years
    • Tinfoil Barb: 8-10 years
    • Tire track eel: 8-18 years

    Wild Species

    Large Mouth Bass

    Just in case you were wondering how aquarium fish stack up against wild species, here’s a list of some well-known wild fish and their lifespans:

    • Atlantic Salmon: 5-8 years
    • Bluegill Sunfish: 5-8 years
    • Common Carp: 25-50 years
    • Largemouth Bass: 10-15 years
    • Rainbow Trout: 5-7 years
    • Sturgeon: 50-60 years

    Aquarium Invertebrates and Other Aquatic Animals

    Fish are not the only animals that live in fish tanks! Continue reading to learn about some other aquatic pet lifespans.

    • Cherry shrimp: 1-2 years
    • Snails: 1-10 years
    • Dwarf Frogs: 5-15 years
    • Turtles: 20-40 years
    • Axolotls: 10-15 years

    9 Factors that Affect Fish Lifespans

    The lifespans listed above are possible with good care and a healthy specimen, but tropical fish often live a much shorter lifespan than you might expect. There are many factors that can determine your pet’s longevity, and many of them are in your control as a fish keeper.

    Continue reading to learn about nine factors that can increase or decrease aquarium fish longevity.

    1. Age At Purchase

    Guppies Swimming

    This one might seem pretty obvious, but young fish can live longer than old fish.

    Most of the fish you see in the pet store are just a few months old, which means they still have most of their expected lifespan ahead of them. The large, mature specimens you see sometimes are much older, and it can be difficult to tell their age.

    Young fish may be more fragile and susceptible to damage than mature specimens, but if you can get them through the acclimation period and the first few weeks in their new tank, these fish can survive for many years.

    2. Stocking

    Bullying and fighting between the fish in your tank can cause stressful living conditions and reduce your fish’s lifespan. Some fish tend to be more aggressive than others, and you really want to avoid these species when setting up a community tank.

    I recommend stocking your tank with peaceful fish that grow to a similar size. This will also prevent any fish from getting snacked on. Remember, big fish eat little fish!

    3. Physical Size

    Frontosa-Cichlid

    If you’ve already scanned through the list of fish and their lifespans, you probably noticed a general trend. Medium-sized fish live longer than small fish, and big fish live even longer.

    Most small fish live about three to five years, while large species like koi can live for several decades. There are exceptions, of course. Kuhli loaches can live surprisingly long for their size!

    Tank size can play an important role in fish lifespans too. Keeping large fish in a small tank will lead to cramped conditions, poor water quality, and a reduced life expectancy.

    4. Genetic Factors And Fancy Breeds

    What is a fancy goldfish

    Genetics plays a big role in the lifespans of pet fish. Some betta fish live for over four years, although selective breeding has decreased the average lifespan of some varieties.

    Some fancy breeds tend to have shorter lifespans than wild-type fish. This applies to fish like balloon mollies and some fancy goldfish breeds. These fish may be more prone to health issues that affect their internal organs, but they can still lead a full and healthy life with good care.

    5. Water Quality

    Tap-Water-Source

    Poor water quality is probably the leading cause of reduced lifespans in pet fish. Keeping a tank clean and maintaining a healthy environment can be tough for beginner fishkeepers, especially if you start with sensitive fish species.

    Understanding the aquarium nitrogen cycle and testing your aquarium water regularly will help you maintain a suitable environment and keep your fish healthy, but having the right equipment is also crucial. Tropical fish need good filtration and regular aquarium maintenance to keep their water safe and achieve their full potential life span.

    6. Water Parameters

    Poor water quality is a major cause of fish mortality, but even well-maintained aquariums can be dangerous for some fish species.

    Each fish species has evolved to live in a certain range of water chemistry parameters. Some fish are highly adaptable, while others won’t survive unless you recreate their preferred conditions. Of course, freshwater fish should not be mixed with saltwater fish and vice versa!

    I suggest testing the pH level and water hardness of your local water supply before choosing your fish species. It is possible to alter your water chemistry or use bottled or reverse osmosis water in your tanks, but it’s always easiest to choose freshwater fish that will thrive in your local water.

    7. Temperature

    Incorrect water temperature can reduce fish lifespan to just hours, so this is one factor I really can’t stress enough. Tropical freshwater fish come from warm water habitats, so most fish keepers will need an aquarium heater to keep these fish healthy.

    However, you probably won’t need a heater if you live in a tropical region, or keep your home at a constant temperature between about 75 and 80 degrees Fahrenheit. Fish temperature preferences vary depending on the species, so always research the needs of each individual fish species before adding them to a community tank with other fish.

    8. Health Problems

    Fish are susceptible to various illnesses that can reduce their lifespan. Common diseases include bacterial infections, fungal infections, viruses, and parasitic infections like ich that cause white spots.

    Aquarium fish are most vulnerable to health problems when their water quality is low, but they can also develop illnesses when kept in unfavorable water parameters or with unsuitable tank mates.

    Disease outbreaks can occur when you add a new fish to your aquarium, so it’s best to confine new fish to a quarantine tank before introducing them to your community aquarium. That way you can monitor your new pet fish for a few weeks and treat them with veterinary medicine if necessary.

    9. Diet

    Diet quality is another important factor that can increase or decrease your fish’s life expectancy. Different species of fish have different dietary needs, so you may need to provide more than one type of food if you keep multiple species of fish.

    ⚠️ The three mistakes I see most often that cut fish lifespans short: First, keeping fish in a tank that’s too small. chronic stress and stunted growth take years off their lives. Second, poor or monotonous diet. fish need variety and species-appropriate food to thrive. Third, bad tank mates that cause constant stress or injury. I’ve watched all three of these shorten the lives of fish that could have lived much, much longer.

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    Modern prepared fish foods contain just about everything your fish need to stay healthy, but you can also supplement their diet with some healthy treats. Carnivorous and omnivorous fish love live or frozen foods like bloodworm and brine shrimp, while omnivorous and herbivorous fish species enjoy healthy snacks like peas and zucchini.

    FAQs

    How long does a pet fish live?

    Depending on the species, most pet fish with live between 1 and 15 years with good care. The average nano fish will live between 3 and 5 years, while medium fish species have longer lifespans in the 5-15 year range.

    How long do fish live naturally?

    Fish in the wild probably live shorter lifespans than captive fish because they are exposed to more predators and dangerous environmental factors like floods, droughts, and cold snaps. Captive fish can live a surprisingly long life if kept in a clean tank with stable conditions and a high-quality diet.

    Which fish species has the shortest lifespan?

    According to the Guinness Book of Records, the fish with the shortest lifespan is the seven-figure pygmy goby. These tiny saltwater fish complete their entire life cycle in less than two months!

    In the aquarium hobby, livebearers like guppies and platies tend to have shorter lifespans than similar-sized egg layers like the neon tetra. The average guppy has a lifespan of just two to three years.

    Which fish live the longest?

    The longest-living fish species is the Greenland shark, a species of deep, cold waters in the open ocean. These huge sharks can reach about 23 feet and live for over 400 years! This is one fish you probably don’t want in your home aquarium.

    Which fish has the longest lifespan?

    Goldfish are about the longest-living aquarium fish species, and some specimens will live over 25 years with proper care.

    Koi can live even longer, although these beautiful fish from the carp family are usually housed outdoors in ponds. Their average lifespan is about 25 to 30 years, although one incredible specimen called Hanako is said to have lived for 226 years!

    Final Thoughts

    Fish lifespans vary between species, but you can use this guide to make a pretty educated guess about how long your fish will live. Of course, you’ll need to provide consistent care if you want your pets to reach their full potential, so check out my extensive range of fish care guides for loads of great advice!

    How old is your oldest fish? Let me know in the comments below!

    🐟 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.

  • Can Angelfish and Bettas Live Together? Why I Always Tell Customers to Avoid It

    Can Angelfish and Bettas Live Together? Why I Always Tell Customers to Avoid It

    I’ve never personally attempted this combination. and after 25 years in the hobby, that’s a deliberate choice. I’ve heard the aftermath from customers who came into the fish store after things went sideways with this pairing. The core problem is size and temperament: angelfish are significantly larger than bettas, and while bettas have a reputation for aggression, they’re actually the ones that come off second best when an adult angelfish asserts itself. My advice: skip this combo entirely. This guide explains exactly why. and what to do if you’re already in this situation.

    Key Takeaways

    • Betta fish and angelfish are not recommended as tank mates.
    • Some aquarists may have successfully housed these fish together in larger aquariums (55-gallon +) but it’s important to have a spare tank ready in case you notice any signs of aggression.
    • Bettas can be aggressive, but they are slow swimmers and stay much smaller than angelfish, so they are more likely to be the victim in an aggressive encounter.

    Can Angelfish And Bettas Live Together? – No!!!

    Here’s your quick answer. In the vast majority of cases, Bettas cannot live with Angelfish in the same tank. Now that you know the answer, let’s go into why it doesn’t work.

    Why It Doesn’t Work

    Let’s take a look at some of the issues you’re likely to face.

    Tank Size

    On paper, angelfish and betta fish prefer similar water parameters, so you might think they make ideal tank mates. However, these fish have very different tank size requirements.

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    You’ll need at least 20 gallons to house young angelfish and a 55 gallon tank for adults, but just 5 gallons or more to house bettas. So, you definitely can’t add angelfish to a small betta fish tank.

    Aggression

    Both angelfish and bettas can be aggressive fish, depending on their personalities. Both fish also have long fins, so they can be vulnerable to fin nipping.

    However, a full grown angelfish is much larger than a betta fish, so if there’s any aggression, the betta is going to come off second best.

    🚫 From my experience in the trade: This is the core of why the pairing fails. Bettas have a reputation as the aggressor, but next to a full-grown angelfish, that reputation doesn’t hold up. I’ve had customers come into the store after losing their betta to angelfish aggression they never saw coming. The size difference is just too significant. especially once the angelfish fully matures.

    Angelfish can become especially aggressive during breeding, so if you have males and females, there’s even more risk of them harming your betta fish.

    Illness

    Aggression can turn your community tank into a toxic environment that is as stressful for you as it is for your fish. Unfortunately, aggression also causes illness and even death in pet fish.

    A bullied fish often sustains minor injuries that leave them vulnerable to secondary infections. In some cases, aggressive betta fish or angelfish will even kill their victims outright!

    Betta Basics

    Betta fish (also known as Siamese fighting fish) are small freshwater fish that usually reach about 2.5 inches in length. Today, they are prized for their amazing colors and fancy fins, but these fish were once bred for competitive fighting.

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    Bettas have a reputation for aggression, although they can make excellent community fish. A lot depends on their individual personality, but male bettas are likely to fight with their own species if housed in the same tank. It’s always safer to keep just one betta in its own aquarium, or with other compatible species.

    Female bettas are generally regarded as less aggressive than males, although most fishkeepers choose males for their brighter colors and longer fins. You can learn much more about female bettas from my complete female betta care guide.

    Betta fish live in shallow, freshwater habitats and have evolved to breathe air from the surface for survival1. Their hardy nature means they can be kept in tanks as small as 5 gallons, although they require a filter and regular tank maintenance to provide good water quality. Bettas are tropical fish so they also need heated water to stay active and healthy.

    Betta-in-Planted-Aquarium

    Check out my guide to 15 betta fish tank mates (and four to avoid) for advice on some great freshwater fish that can share a tank with a Siamese fighter!

    Facts and Figures

    • Scientific name: Betta splendens
    • Fish family: Osphronemidae
    • Origin: Southeast Asia
    • Diet: Carnivore
    • Temperature: Upper 70s to mid 80s Fahrenheit
    • pH: 6.8 – 7.5
    • Hardness: Soft

    Angelfish in a Nutshell

    Angelfish are medium-sized South American fish from the cichlid family. These popular fish come in various color forms, but each breed has that characteristic combination of long dorsal and anal fins.

    Freshwater-Angelfish

    These fins make the angelfish very ‘tall’, so it’s best to keep these freshwater fish in an aquarium with high sides. In terms of size, these fish can reach over 6 inches in length and an impressive 10 inches in height, so a single fish will need a tank of at least 20 gallons, with 55 gallons being better for larger adults.

    While angelfish are relatively peaceful, they are cichlids, and they aren’t always complete angels! These fish are typically classified as semi-aggressive but they can be pretty aggressive when they’re paired up and start breeding.

    Freshwater angelfish are omnivores, and they have a pretty small mouth. However, they will eat nano fish small enough to swallow.

    Looking for some great ideas for angelfish tank mates? Check out my guide to 15 freshwater species that get along with angelfish!

    Facts and Figures:

    • Scientific name: Pterophyllum scalare
    • Fish family: Cichlid family
    • Origin: Amazon river basin in South America
    • Diet: Omnivore
    • Temperature: Upper 70s to lower 80s Fahrenheit
    • pH: 6.8 – 7.8
    • Hardness: Soft

    How To Keep the Peace

    If you already have angelfish and betta fish in the same tank, there are some things you can do to decrease the chance of aggression. Again, there are no guarantees, but a combination of these techniques might help prevent war in your aquarium.

    Go Big

    A lot of compatibility problems are caused by keeping fish in small tanks. When it comes to angelfish and betta fish, your chance of success rises as you get into that 55+ gallon range, but remember, these fish are still not recommended as tank mates. You have safer bets in 6 or 8 foot long tanks, but at that size your Betta will get lost in the visual of the display tank.

    Get the Parameters Right

    Fortunately, bettas and angelfish thrive in similar conditions. Aim for a water temperature in the upper 70s Fahrenheit and a neutral pH around 7 to keep both fish happy. Both angelfish and betta fish prefer water with a low flow, so use an appropriate filter.

    Start With Young Fish

    Young angelfish do not have the same territorial and aggressive drive as breeding adults, so they’re often safer to keep together with bettas. Letting your fish grow up together might also help prevent aggression down the line, but you can still expect some dominance battles as they grow and reach maturity.

    Female Bettas and Single Angelfish

    Female-Betta

    Female bettas are generally less aggressive than males, and their shorter fins are less prone to damage. Paired angelfish can be more aggressive than single specimens, so a combination of one or more female bettas and a single angelfish might work the best, especially when combined with some of the other tips mentioned here.

    Monitor Regularly

    You should check in on aquarium fish every day, but risky combinations like betta fish and angelfish should be observed frequently, especially in the weeks after they are introduced. A community tank with betta fish and angelfish should be positioned somewhere you can monitor it throughout the day.

    Watch out for any signs of aggression so that you can take action before serious injury can happen. Aggression often takes place during feeding times, so be especially alert when your fish are eating.

    Feeding Your Fish

    Adding food to different parts of the tank at the same time can reduce competition and conflict, but you should also be aware that bettas and angelfish have slightly different diets.

    Betta fish are mostly carnivorous and will thrive on a diet of prepared dried food and live/frozen foods. Angelfish are more omnivorous so they need a prepared food suitable for their needs.

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    Live Plants

    Live plants are beautiful to look at, fun to grow, and great for the health of your fish. They’re also perfect for breaking up the line of sight in the tank. This means fish are not always visible to each other, which reduces aggression. Large plants also provide hiding places where fish can escape if they feel threatened or are under attack.

    Choose large plants like Amazon swords, vallisneria, and large Java ferns that will grow up into the water column, but don’t be afraid to add a few smaller species and floating plants to make your aquarium an even more natural environment.

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    You can also use artificial plants, but avoid firm plastic decorations that can cut and damage your betta fish fins. Live plants are always better for bettas!

    Caves And Structure

    The hardscape in your tank can also play an important role in breaking up line of sight and creating hiding spots. Rocks, driftwood, cave ornaments, and other decorations provide places where fish can set up territories or hide from dominant tank mates.

    Choose fish-safe ornaments that are made for aquariums to avoid introducing any chemicals into your tank. You should also check for any sharp edges that can tear your fish’s fins.

    Dither Fish

    Sometimes, the best way to avoid aggressive behaviors is to add more fish. Dither fish are active species that create movement and make it difficult for an aggressive fish to single out a victim. The best options are active schooling fish that swim at various levels in the tank.

    Busy bottom dwellers like cory catfish, or fast, active fish like rainbowfish make good dither fish, but it’s important to choose other fish that enjoy the same parameters as angelfish and bettas. Avoid nano dither fish that are small enough for angelfish to swallow. You can also try medium sized social fish like molly fish.

    Plan B – What To Do When War Breaks Out

    If it doesn’t work out between your angelfish and betta, you’re going to have an animal welfare issue on your hands, and the best thing to do is separate your fish or find a new home for one of them.

    You may already have a spare tank that you use for quarantining or treating sick fish, but if not, it’s always a good idea to have an emergency option. You could even use a bucket or something similar as a (very) temporary solution, just make sure the container has not been used to hold any toxic chemicals.

    Once your fish are separated, it’s time to come up with a long-term solution. Continue reading to learn about three possible options.

    Try A Tank Separator

    Installing a tank divider will allow you to keep these two species in one aquarium without any drama, but it does limit the swimming space for both fish and all the other species in the tank. Fish tank dividers are available for sale, or you can make your own to save some money for your next tank.

    ✅ If you’re set on keeping both: A tank divider is the one scenario I can honestly endorse. It’s the only way to have both fish without risking conflict. That said, both fish will have reduced swimming space. so if you go this route, start with at least a 55-gallon tank so each side has enough room to live comfortably.

    Budget Option
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    With your fish separated in a single tank, you can start creating hiding spaces, adding more structure to break up their line of sight, and introducing live aquarium plants and dither fish.

    If your fish still don’t get along after making some changes in the tank, you’re going to want to try one of these next options for a long-term solution.

    Start A New Aquarium

    Angelfish need much larger tanks than bettas, but you can create a great new home for a single betta fish in a tank as small as 5 gallons. This is usually the easiest and most cost-effective option, but it will limit your options for adding other species.

    Male bettas are happy to live in their own tanks, but you’ll want to step up to a ten-gallon or larger if you plan on giving him some tank mates. Female betta fish can also be kept in their own tank, or you can keep a sorority of females in a larger aquarium.

    There are great betta tank kits available, but you can also put your own tank together. Just don’t forget the heater and filter!

    Starting a new tank is easier when you already have a cycled aquarium because you can seed your new filter with beneficial bacteria from the old tank to give the nitrogen cycle a jump start. However, you’ll still need to monitor your water parameters regularly, so keep that water test kit handy.

    Check out my guide to fish-in cycling to make the transition as smooth as possible!

    Rehoming

    If your new angelfish isn’t getting along with your betta (or vice versa), and you don’t have the space for another aquarium, you might be able to return the fish to your local fish store. Call ahead and speak to someone at the store before taking your fish on another road trip.

    Depending on their policy, you might not get a refund, but that’s still better than letting your fish get hurt. If the store has a no-return policy, you might want to ask any other fish keeping friends if they have space for a new fish or even put your pet up for sale to a good home.

    Final Thoughts

    So now you know why keeping angelfish and bettas together is a bad idea. Hopefully, you’ve also picked up some useful tips on how to keep the peace if you find yourself housing both species in the same tank.

    While some fishkeepers have managed to keep these fish together successfully, I do not recommend trying it yourself. Rather check out my guides to angelfish tank mates and betta fish tank mates for some much safer options!

    📘 Want to learn more? This article is part of our complete Betta Fish Guide. your ultimate resource for betta care, types, tank setup, feeding, tank mates, and more.

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

  • Fish Tank Ideas: 30+ Setups That Have Inspired My Own Builds

    Fish Tank Ideas: 30+ Setups That Have Inspired My Own Builds

    I’ve been keeping fish for over 25 years, and few things in this hobby beat the moment a tank design truly clicks. Aquascapes, cichlid rockscapes, and nano planted betta tanks have all inspired setups in my own fishroom over the years. and they still do. If you’re looking for your next build or just some inspiration for what’s possible, this is one of my favorite topics to cover. Here are 30+ fish tank ideas from across the hobby that I keep coming back to.

    Key Takeaways

    • Designing an aquarium is a great chance to let your creativity run wild and create something truly unique. However, drawing some inspiration from other setups can be very helpful.
    • Aquarium decorations are a great way to add some style and personality to your aquarium, but live plants and natural materials like wood are the best choice for nature-style fish tanks.
    • Stick to hardscape and decorations designed specifically for aquariums. Natural decorations like rocks can be used if you clean them carefully, but some natural materials like sea shells and limestone can change your water chemistry.
    • Be sure to include a filtration system if you’re creating a shrimp or fish tank, and a heater if you’re keeping tropical species.
    • Don’t be afraid to think out of the box! Paludariums and emersed planted tanks are excellent aquarium ideas.

    Nano Fish Tank Ideas

    In the aquarium hobby, small aquariums are usually referred to as nano tanks. How small is small? Well, the definition varies, but you can call anything smaller than about 20 gallons a nano tank.

    There are many different nano tank styles, ranging from species-only setups to thriving communities. Continue reading for some nano tank inspiration!

    10-gallon Nano Betta Fish Tank Idea

    Betta fish are one of the most popular nano fish in the hobby, but we see them in tiny bowls and other containers way too often. This beautiful 10-gallon nano betta fish tank deserves a round of applause1!

    The combination of live aquatic plants, driftwood, hardscape, and a little beach area gives this tank a feeling of balance and tranquility. I bet that’s one happy betta.

    5-Gallon Betta Setup

    You can also go a little smaller for a single betta, although you’ll still need a filtration system and a heater. Maintaining high water quality will also become more challenging, but regular water changes and cleaning will keep your fish happy and healthy.

    At 5 gallons, this well-planned fish tank is about the smallest you should go for bettas or other live fish. However, you can make a nano tank look much roomier than it really is by decorating it carefully.

    Notice how the dark substrate makes the plants stand out even more? Black sand or gravel can also make fish look brighter and it’s great for some shy fish species that prefer a dark habitat.

    🏆 My Pick: If I had to recommend one starting point for beginners who want to build something beautiful without overwhelming themselves, it’s the natural planted betta tank. The footprint is small, the cost is manageable, and the results can look incredible. I’ve set up many of these over the years and they never get old. it’s the best entry point into seriously impressive aquarium design.

    Community Aquarium

    It is possible to keep multiple nano fish species together in a small tank, but you’ll need to step up to an aquarium in the 15 to 20-gallon range to house your fish safely.

    This elegant tank is home to multiple fish species and some beautiful aquatic plants. Most fish that grow to about 2.5 inches or less can be kept in this tank size, although it’s important to research the minimum school size and parameters of each species.

    Themed

    There are some awesome aquarium decorations out there for setting up a themed fish tank. Check out these fun but contrasting examples from across the web!

    Spongebob

    Spongebob-themed aquarium decorations can turn a nano tank into a fun and exciting fish tank, especially for the kids. This themed aquarium looks just like a scene from the popular TV show, and those yellow fish fit right in!

    Bamboo Forest

    Looking for something a little more zen? Check out this peaceful betta tank, complete with its own bamboo forest. This fish tank theme is perfect for your work desk, especially if you have a stressful job.

    Planted Aquariums

    If you ask me, all freshwater aquariums should include some live plants! Live plants have many benefits for your fish, and they look great too! Let’s take a look at some amazing planted tank eye candy.

    Submerged Bonsai

    Plants dominate this incredible aquascape, although its creator has chosen to create a scene that looks more like a dry landscape than an underwater scene!

    It would take many years to grow an actual bonsai that looks this good, but by cleverly planting a small plant like Anubias barteri var. nana on a great piece of driftwood, you can achieve much faster results.

    The addition of carpet plants and that inviting clearing under the ‘tree’ make this peaceful scene really aesthetic. Can you picture a few shrimp or a betta hanging out under the shade of those branches?

    Dutch Style

    This amazing Dutch style planted fish tank ticks all the right boxes for aquarists who like a lot of color! This orderly aquascaping style requires dedication and a real eye for design, but the results are incredible.

    ⚠️ A Word of Caution: The biggest mistake I see people make when trying to recreate a tank they found online is skipping the research on plants and aquascape layout concepts. Aquascaping has its own language. rule of thirds, foreground/midground/background layers, plant selection based on light and CO2 requirements. If you dive in without understanding these principles first, you’ll spend a lot of money on plants that die and layouts that fall apart. Study the style you love before you buy anything.

    The rimless tank and open-top design add another dimension of viewing pleasure to this tank. Sometimes, plants look the best when viewed from above!

    Dutch-style planted tanks are all about the plants, but that doesn’t mean you can’t add some movement. The vertical bars on those angelfish really complement this tank!

    Emersed Growth

    There’s something special about a planted tank with emerging plants. This stunning aquarium is a true underwater paradise, complete with lush vegetation growing out of the water, just as it does in nature.

    Many common aquarium plants, including Ludwigia and Rotala, can be grown emersed in a hoodless tank with suspended lighting.

    Fish safety is an important consideration when planning an open-top fish tank. Fish are surprisingly good at jumping out of tanks, so it’s a good idea to cover the top with some kind of screen.

    Paludariums

    Giving your plants the freedom to grow up and out of the water creates a unique look, but you can go even further and create a truly amphibious tank. Paludariums, like this exquisite example, include an underwater section and a land section.

    Depending on the size and design of your paludarium, you could house aquatic life like fish, shrimp like red cherry shrimp, or dwarf frogs in the water. The land section is great for frogs, and turtles that like to spend time in and out of the water.

    The land section of your paludarium could take the form of an island that sticks out of the water in the center, or you could add a simple shelf, complete with some rocks, soil, and plants.

    The Living Wall

    A planted wall is another spectacular design, although this limits some of the animals you can keep. This example provides some swimming space for shrimp or nano fish, and plenty of planting space for those awesome tropical plants.

    African Cichlids

    African cichlid tanks are the ultimate choice for freshwater aquarists who want a large tank that bursts with color and movement. Although you can grow some plants in African cichlid tanks, these setups are usually all about the fish.

    Rock Pile

    Some fishkeepers house African cichlids in pretty open, bare-bottom fish tanks, but if you ask me, these fish look so much better with some dramatic rocky hardscape!

    This tank creates wonderful cichlid habitats and makes a bold statement as a display tank. The white sand contrasts with the round rocks to make this simple but effective tank really pop.

    Just make sure you secure round rocks properly if you set up a tank like this, they could easily injure your fish or crack your tank if they come tumbling down.

    Rock Walls

    When we talk about aquarium hardscape, most people think of arranging and stacking rocks or driftwood on the bottom of the fish tank. However, the back and side walls can be used to create an amazing effect.

    You could simply use a life-like stick-on aquarium background, or go this route and create something with real texture!

    Angelfish

    Angelfish are stunning freshwater cichlids that come from South America. These distinctive fish have a very ‘tall’ body shape, so they need a tank with some real height.

    These fish thrive in planted tanks and can be housed with many other peaceful community fish in a big enough aquarium – just avoid tiny tank mates that your angels might see as a tasty snack.

    Altum Angel Aquarium

    This gorgeous designer fish tank is home to a big group of Altum angelfish, a large species native to the Rio Negro and Orinoco rivers in South America. The dramatic driftwood contrasts against a backlit background to make an aquarium that no one is walking by without stopping to stare!

    Aquascapes

    Most aquascapes include live plants, but you can also create a stunning scene by arranging hardscape features like rocks and driftwood. Let’s take a look at some interesting aquascapes.

    Forest Scapes

    This inspiring aquascape looks just like a forest scene from the great outdoors, complete with mountains! This kind of project takes real dedication and a lot of experience, but the results are absolutely amazing.

    Iwagumi

    This iwagumi masterpiece by George Farmer highlights the simple beauty of this unique aquascape design. Each rock is carefully arranged in the frame to create a simplistic yet bold look, and the dense carpet of plants only adds to its appeal.

    This type of fish tank looks best with a small group of schooling fish like neon tetras, which create the effect of a flock of birds flying over the aquascape.

    The Nature Aquarium

    This jaw-dropping tank is a prime example of a nature aquarium. The style was popularized by the legendary Takashi Amano, a pioneering aquascaper from Japan. The style aims to create a unique natural world, rather than recreating a scene directly from nature.

    A variety of different plant types are used in this style, but hardscape features like rocks, roots, and driftwood are equally important in creating different zones and textures in the tank.

    Glofish Tanks

    Have you ever heard of Glofish? These neon-colored fish were originally genetically modified to identify toxins in water, but today they are very popular in the aquarium hobby for their vibrant colors.

    Neon Glow

    Glofish come in exotic colors like sunburst orange, electric green, and galactic purple, and they include popular species like corydoras catfish, tetras, danios, and rainbow sharks. These fish really stand out under blue LED lighting, and so do the special glofish gravels, aquarium decorations, and artificial plants.

    Nano Glofish Setup

    Glofish tanks are a perfect idea for the kid’s room or anyone who loves bright colors! This low-maintenance example shows off the amazing colors you can achieve with the right lighting and some cool glofish tetras.

    Goldfish

    The goldfish is another freshwater species that looks nothing like their wild ancestors. Hundreds of years of selective breeding have created the amazing variety of fancy goldfish breeds we know today.

    Some people still think goldfish can live in little fish bowls, but these fish actually grow surprisingly large, so they need a fish tank of at least 30 gallons for long-term care.

    Keeping goldfish is all about the fish. These adorable underwater pets have a long lifespan, and it’s really rewarding to watch them grow and thrive in a healthy fish tank.

    The Minimalist

    Many aquarists choose to keep their goldfish in open, minimalist tanks like this setup because they are easy to clean and place all the attention on the tank inhabitants. The addition of that long airstone adds another layer of interest to this fish tank while increasing oxygen levels in the water.

    Eastern Elegance

    This 60-gallon goldfish aquarium still has a low-maintenance design but includes a little more structure, including some great aquarium decorations that reflect the goldfish’s east Asian origins.

    60 gallons is a great size for two or three fancy goldfish, and you could even consider some goldfish tank mates in a tank of this size.

    Check out my guide to 11 goldfish tank mates for some great goldfish companions!

    Nature Style Goldfish Aquarium

    Unfortunately, goldfish love to snack on most plants, but that doesn’t mean you can’t create a natural home for your fishy friends. Some attractive river stones and soft artificial plants or tough live plants like Java fern and Anubias look great in a goldfish tank.

    Big Tank Inspirations

    Most of us can only dream of the kinds of tanks in this next section. Oh well, it doesn’t mean we can’t drool over them! Keep reading to learn about some amazing aquariums from across the world.

    Outdoor Koi Pond with Glass Front

    Don’t have space in your home for a big fish tank? These fish-lovers went ahead and designed a Koi tank/pond hybrid, which combines the best of both worlds!

    Large koi are traditionally viewed from above, but this stylish setup allows you to enjoy your fish from every angle.

    Kanye West’s Bathtub Aquarium

    Stepping back inside, Kanye West’s super-stylish bath-tub tank is a great example of creative aquariums.

    This tank helps you feel like you’re swimming in nature, every time you take a bath. The tank is filled with some awesome fancy goldfish.

    The Mirage

    Now, if money or space isn’t a problem, you might want to go with an aquarium like this beauty from the Mirage in Las Vegas. This mega 20,000-gallon fish tank is home to over 80 species of saltwater fish from tropical waters across the globe.

    Atlantis The Palm

    Some hotels go one step further, and let their guests view their amazing aquariums from within their suites! The Lost Chambers Aquarium in Atlantis Dubai allows viewers to enjoy sightings of over 60,000 ocean animals in the Ambassador Lagoon, all from their own suite!

    Final Thoughts

    So there you have it, 25 fantastic fish tank ideas that you can use to design your next aquarium. You could choose a nano-themed aquarium filled with cool decorations, an aesthetic nature aquascape full of aquatic life, or splash out on an impressive celebrity-style installation – the choice is yours!

    Which of these 25 fish tank styles do you like the most? Share your view in the comments below!

    🔧 Want to learn more? This article is part of our complete Aquarium Equipment & Gear Guide. your ultimate resource for filters, heaters, lights, pumps, tanks, and more.

  • GloFish With Betta: Why It Almost Never Works (And the One Exception I’d Try)

    GloFish With Betta: Why It Almost Never Works (And the One Exception I’d Try)

    GloFish and bettas in the same tank works sometimes and fails spectacularly other times. It depends entirely on the betta temperament and the GloFish species.

    Some bettas ignore GloFish. Some attack them relentlessly. You will not know which you have until you try.

    Key Takeaways

    • The only GloFish that is compatible with a betta are GloFish cories.
    • Bettas have particular requirements that do not mix well with other GloFish, like tank size, aggression, and overall compatibility.
    • Many GloFish, like tetras, are known nippers and are ill-suited for a slow-moving, long-finned betta.
    • Another alternative to getting an entirely new fish species is getting a GloFish betta instead!

    The Quick Answer – Glofish With Bettas Don’t Work

    The answer is mostly no. Many of the GloFish species available are incompatible with betta fish due to overactivity, aggression, or other behaviors that we will go over in this post. That being said, the GloFish corydoras are one of the most successful pairings.

    What Are GloFish?

    If you’ve ever gone to your local fish store, you might’ve seen blacked-out tanks with various fluorescent pink, yellow, orange, blue, and red fish. These are often different tetra, danio, barb, shark, and cory catfish species. You might find yourself asking what these fish are, whether or not they are safe to keep, and if they is kept with your other community fish.

    Glo-Fish

    GloFish are genetically modified fish that have been fundamentally altered to express their trademarked bright colors. Contrary to popular belief, GloFish are not injected with artificial dyes and do not have genetic defects, though consumers should be wary of off-market fakes.

    Instead, GloFish DNA has been altered to express certain colorful traits that get passed down from one generation to the next, meaning that their colors will never fade. It should be noted that breeding GloFish is trademarked and should not be intentionally tried in the aquarium setting.

    In general, GloFish are no more or less ‘safe’ to keep than the wild-type variety of the given species., bright individuals are just as hardy and adaptable as their regular-colored counterparts. There is a lot of discussion about the ethics of GloFish and what their adaptation could mean for the future of fishkeeping.

    GloFish can safely be kept with a variety of tropical fish species. However, this isn’t done as they require special lighting, like a black light, for best viewing, which isn’t always best for other species. Because of this, many hobbyists set up a GloFish-only tank with a variety of compatible species.

    Things To Consider

    Pairing any fish with a male or female betta is tricky. These are individualistic fish with varying temperaments. Whether or not your betta fish is kept with other fish will depend solely on the personality of your fish.

    There are a few ways to increase the likelihood of success, though.

    Water Temperature

    Betta fish enjoy a stable water temperature between 78 to 80° F. Most tropical fish options fall within this range, but some popular GloFish options, like zebra danios, do not.

    Aquarium Size

    No, betta fish cannot live in a bowl with GloFish. In fact, bettas should never be kept in anything smaller than a 5 gallon fish tank, with 3 gallons being regarded as the absolute minimum.

    While a single male or female betta fish is happy in a small tank, any addition of a tank mate will call for a larger tank due to the betta fish’s natural aggression and territorial behavior.

    Unfortunately, most GloFish varieties grow to be over 2 inches big and often need to be in a group, so a minimal 20 gallon aquarium is necessary to prevent territories from overlapping.

    Temperament

    In addition to tank size, temperaments will be the determining factor as to whether or not your betta fish will get along with other fish species. Male and female bettas, also known as Siamese fighting fish, are naturally aggressive fish as they try to protect their territories. They are willing to attack and sometimes kill intruders, especially if they have vibrant colors.

    On top of aggression, overactivity is a problem for slower-moving bettas. Many of the GloFish species available are active swimmers, which can easily outcompete a long-finned male betta, especially during feeding times.

    ⚠️ Biggest Mistake: The most common error I see is people not knowing the original species behind the GloFish they’re buying. GloFish Danios are one of the worst choices. Danios are naturally fast, relentlessly active schoolers, and that constant darting motion stresses bettas out significantly. Many other GloFish varieties come from semi-aggressive base species with zero natural compatibility with bettas. Always look up the base species before adding anything to a betta tank.

    The ideal temperament match would be a relatively docile betta with other shy but present fish.

    Competition

    All in all, a betta fish pairing is based on compatibility and competition. Water parameters must match and temperaments should align for different species to live in the same tank.

    Though you might want your fish to interact together in the fish tank, it’s actually more ideal if they completely ignore each other.

    Why Cories Work

    Corydoras are one of the most popular freshwater fish available, with many different species coming in all shapes and sizes. These fish range anywhere from under an inch long to some reaching almost 5 inches.

    GloFish cories are derived from the bronze or green cory, Corydoras aeneus, which are arguably the most popular species available. Bronze cories grow to be about 2.5 inches long. They need a 20 gallon aquarium as they are schooling fish that need to be kept in groups of at least 6 or more. Corydoras are most active at the bottom of the aquarium, so a longer aquarium is better than a taller one.

    Betta fish are known for their aggression and low-level activity. Any other fish that enters their territory, has similar coloration, or otherwise disrupts their natural float-through-life attitude can greatly stress them out. This is why GloFish cories can make great tank mates for bettas!

    Corydoras are peaceful fish that stick with their schools at the bottom of the aquarium. This leaves a ton of space in between your betta fish, who likes to live in the upper portions of the aquarium, and your bottom-dwellers. However, this pairing cannot be kept in a regular 5 gallon tank meant for a solitary betta.

    🏆 Mark’s Take: Cories are the rare GloFish exception that actually makes sense with a betta. They’re peaceful, they school at the bottom of the tank, and bettas naturally claim the top and middle. So they occupy completely different zones without ever needing to interact. I’ve seen this work well because neither fish has a reason to bother the other. Just make sure you have at least a 20 gallon tank and a group of 6+ cories so they feel secure enough to stay calm.

    Instead, a GloFish betta pairing will require at least a 20 gallon long tank with a 30 gallon increasing the chances of the two species living peacefully. Adding a soft substrate along with lots of plants and structures will also keep your corydoras interested and sheltered while also giving your betta surfaces to rest and explore, which will help keep these two worlds separate.

    With the right setup, GloFish cories and male or female bettas can live peacefully together in the same tank.

    Why These Others Do Not Work

    But what if corydoras aren’t your first choice for a GloFish-betta tank setup? Like any other fish pairing, there are reasons why some species get along and others don’t.

    While it is tempting to try adding one of the species below, there are many reasons why these tank mates are less common or just won’t work in the long term.

    Pristella Tetras

    GloFish tetras are a modification of the pristella tetra (Pristella maxillaris). These are big, middle-water-column swimming fish that are active and come in a lot of bright colors. Right off the bat, all three of these considerations are reasons why these GloFish tetras are not compatible tank mates.

    As mentioned before, bettas live in the upper portions of the aquarium. Though not active swimmers, they like to have a wide array of surfaces available for resting, when they want it. GloFish are active loose schooling fish that will happily spread out across the middle and upper layers of the water column, leaving a betta fish to hide or become overly aggressive. Bettas might also flare at and attack timid GloFish due to their bright colors.

    Another important aspect to consider is feeding time. GloFish tetras is hasty feeders that can easily outcompete a slower-swimming betta. Even if you were somehow able to happily house both of these species together, special attention would need to be given to ensure that both fish were getting enough to eat.

    Long Fin Tetras

    Longfin Tetras
    Longfin Tetras

    Longfin Tetras are a variety of blackskirt tetra. Available in several colors. Don’t house with nippy fish

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    GloFish long fin tetras are another popular option of bright-colored fish, but an even worse option than pristella tetras! These GloFish are altered black skirt tetras (Gymnocorymbus ternetzi). They have long-flowing fins that become a target for both each other and for bettas.

    For the most part, long fin tetras have the same behavior as pristella tetras. At first, long fins might even seem more relaxed, but don’t be fooled. These fish are known fin-nippers and will go after each other and slow-moving species. This makes bettas a prime target for harassment. Even if you luck out and get a docile school of GloFish tetras, a betta fish might try to nip at their fins instead.

    Danios

    Danios
    Danios

    Danios are the original fish that started it all. Great dither fish. Gets along with many fish. Should be housed in at minimum 10 gallons and in a group

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    Danios are some of the best beginner fish, but there is little to no compatibility between them and bettas.

    GloFish danios are a type of Danio rerio. These fish originate from fast-flowing, coldwater environments where they like to swim against the current at the surface of the water. These water conditions need to be matched in the aquarium setting. That means a lower water temperature, moderate water flow, and plenty of room to zigzag around.

    As you can see, these conditions directly contrast those required for bettas. Even if you were able to acclimate GloFish danios to similar water conditions needed by betta fish, there is still a huge difference between activity levels. Simply put, these neon zebra danios require different water parameters and are too active to safely be kept with bettas.

    Barbs

    Tiger Barb
    Tiger Barb

    Tiger barbs are one of the more aggressive fish available. Should kept in groups of 12 to curb aggression. Should not be housed with fish with long fins.

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    GloFish barbs are one of the coolest-looking GloFish species due to the contrast created by their black vertical bars. These are tiger barbs (Puntius tetrazona), a long-term favorite in the aquarium hobby. However, these are often misunderstood fish even though they’re one of the top beginner choices.

    Tiger barbs were long sold as a community fish. While there are ways to increase the chances of tiger barbs living harmoniously with other peaceful species, like by keeping them in a large tank with plenty of schoolmates, these needs are often not met. This can lead to frenzy-like behavior that confuses and stresses out other fish. They are also notorious fin nippers.

    Because of their high potential to be semi-aggressive, GloFish barbs are not compatible tank mates for bettas.

    Sharks

    A common tank mate for barbs but not for bettas are sharks. Most often, rainbow sharks (Epalzeorhynchos frenatum) are altered for GloFish gene expression.

    These are relatively large fish that can grow up to 6 inches long. They are not schooling fish and only one is safely kept per every 55 gallons.

    While GloFish sharks stay at the bottom of the tank like corydoras, they are very territorial and will chase away any fish that tries to stay in the bottom portions of the aquarium. This, in addition to their need for a larger aquarium, makes them impractical to keep with male or female bettas.

    Other Fish To Consider

    While many of the GloFish species available aren’t compatible with bettas, there are many traditional tropical fish that can fill the space instead.

    Neon Tetras

    Neon Tetra
    Neon Tetra

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

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    The neon tetra is one of the most popular freshwater fish, period. These are small schooling fish that can comfortably fit in a 10 gallon aquarium alongside a betta fish as long as there are plenty of hiding places.

    Chili Rasboras

    Chili Rasboras
    Chili Rasboras

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    A great nano schooling fish. Males display brighter colors. Best in groups of 6 or more

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    These are very tiny fish that is bullied by a more assertive betta. Chili rasboras only grow to be about an inch long and prefer to stay toward the upper portions of the water column. If you plan on keeping a school of rasboras with a betta, the betta should be slightly more tolerant of an active fish that swims at the surface.

    Ember Tetras

    Ember Tetra
    Ember Tetra

    A small red tetra that grows up to 1.25 inches. A very peaceful schooling fish

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    Ember tetras are similar to neon tetras and should be compatible with most friendly female or male bettas. One benefit to ember tetras is that they’re slightly smaller than neons, which means that you will fit more in a tank.

    GloFish Bettas

    If you want to skip tank mates altogether, then GloFish bettas have grown in popularity over the past couple of years. GloFish produces these fish, but they only come in a bright neon yellow for right now. They have the same care requirements as regular Betta splendens, but glow in the dark!

    Does keeping a GloFish betta mean that you can keep a bigger variety of GloFish species?

    Unfortunately, no. GloFish bettas are regular bettas, just with altered genes. They still need special consideration regarding tank size and aggression. However, it is possible to keep a GloFish betta and a school of GloFish corydoras together.

    Important Note: Glofish Bettas are no longer available at retail stores as Glofish stopped selling the fish. Your best option is to purchase one from a fellow hobbyist.

    Conclusion

    GloFish are genetically modified fish that can make good tank mates for betta fish, especially neon corydoras. Like any other fish pairing, tank size, aggression, and overall compatibility still need to be considered whenever trying to keep a different species with bettas., GloFish corydoras are the most successful as they are peaceful, stay at the bottom of the tank, and don’t outcompete bettas during feeding times.

  • Here Are The Top 12 Smallest Goldfish (With Pictures!)

    Here Are The Top 12 Smallest Goldfish (With Pictures!)

    Not all goldfish get huge. that’s one of the biggest misconceptions in the hobby. After keeping multiple goldfish varieties over the years, I can tell you there are breeds that stay compact enough for a 20-30 gallon tank without compromising their health. These are the 12 smallest varieties worth considering.

    If you’re in search of the smallest goldfish for your compact tank, you’ve come to the right place. This article lists the top breeds that don’t just fit in. they thrive in smaller aquatic environments. Get ready to explore options that celebrate size in small packages, tailored for limited spaces.

    Key Takeaways

    • The smallest goldfish varieties, like Pompon or Bubble Eye goldfish, are ideal for medium sized tanks, offering a diverse range of colors, shapes, and need specific care for their vibrant looks and delicate health
    • Even though considered small for their species, all goldfish require ample space (at least 20 gallons per fish), high water quality, a stable temperature, and it have peaceful, slow-moving tank mates.
    • Goldfish care involves more than just feeding; they require regular water changes, a good filtration system, and a tank free from sharp objects that can harm their unique features.

    Top 12 Smallest Goldfish Breeds

    While most types of goldfish are admittedly large and more suited for larger aquariums, these fish listed on this list are some of the smallest breeds you can find.

    Note that there is not a smaller breed listed for slim-bodied goldfish. Slim-bodied goldfish do get longer than the fancy varieties and have larger tank requirements. Stick to fancy breeds if you have a smaller tank or plan to keep your fish in an aquariums versus a pond. Slim-bodied goldfish make excellent choices for ponds either on their own or with Koi fish.

    1. Pom Pom

    • Goldfish Type: Fancy
    • Adult Size: 4. 6 inches
    • Color Pattern: Various
    • Unique Traits: Ball-shaped nasal growth

    The Pompom Goldfish is certainly a peculiar sight with their adorable ball-like growths on top of their nose. Given their delicate nasal septas, you should make sure that they are kept away from any kind of danger and sharp objects that may harm them.

    These friendly creatures prefer to be around companions so it’s best if multiple goldfish live together as swimming in groups encourages their activity levels.

    2. Bubble Eye

    • Goldfish Type: Fancy
    • Adult Size: 3. 5 inches
    • Color Pattern: Various
    • Unique Traits: Huge bubble eyes

    Introducing the Bubble Eye Goldfish, a captivating breed that stands out for its peculiar physical characteristics. This type of goldfish can be up to five inches long and their hues range from solid red to fascinating two-tone combinations – giving your aquarium an eye-catching splash of color! They also have bubble sacs located below their eyes adding more uniqueness.

    It is important to note that Bubble Eyes need extra care in order for them to stay healthy since they are quite fragile creatures. Make sure you provide everything these fish require so as not neglecting any vital aspect in terms of nourishment and water quality if you want them swimming around with vigor all year round!

    3. Pearlscale

    Pearscale-Goldfish
    • Goldfish Type: Fancy
    • Adult Size: Up to 8 inches
    • Color Pattern: Various
    • Unique Traits: Golfball-shaped body, with prominent domed scales

    Pearlscale Goldfish is a fantastic pick for aspiring goldfish hobbyists. These gentle fish are known for their signature pearl-like scale patterns and can grow up to can average of 4 – 5 inches in size. As one of the delicate fancy varieties, these beautiful creatures require special care when it comes to water conditions inside an aquarium if you want them to thrive.

    Their scales create a golfball like texture. The breed can also include single or double tails.

    4. Celestial Eye

    • Goldfish Type: Fancy
    • Adult Size: 5. 6 inches
    • Color Pattern: Orange, white, or orange and white
    • Unique Traits: Upward-facing eyes and no dorsal fin

    The Celestial Eye Goldfish is quite the handful when it comes to upkeep, their eyes point upwards and require dim illumination for protection from damage. Their environment should have excellent water quality at all times, as they are a delicate species and don’t fare well in unstable atmospheres.

    Having peaceful tank mates will ensure that your pet has minimal stress. Not only do these fish offer an intriguing look, but can really set off any aquarium design you may create with them around! They are best housed in environments with lots of open space and smooth decor, like silk artificial plants, as their eyes are easily injured.

    5. Veiltail

    Veiltail-Goldfish
    • Goldfish Type: Fancy
    • Adult Size: 8. 12 inches
    • Color Pattern: Various
    • Unique Traits: Extra-long tail with square edge and sail-like dorsal fin

    Beauty and elegance are embodied in a Veiltail Goldfish, renowned for its flowing fins. There are an American created breed, first introduced to the aquarium trade in the 1890s.

    This would be considered one of the hardier varieties of fancies you can purchase. It’s also one of the originals given how long it has been breed. It is the largest goldfish on this list, but has been know to live in smaller environments and live a very long time.

    6. Butterfly

    • Goldfish Type: Fancy
    • Adult Size: 5. 8 inches
    • Color Pattern: Various
    • Unique Traits: Butterfly-shaped double tail and telescope eyes

    Desired by goldfish aficionados, butterfly tail goldfish are a small type of fish that can bring natural beauty into your home if they receive the correct care.

    With their spectacular tails resembling those of butterflies, these little creatures come in a variety of patterns, including calico. They come with a high dorsal fin and will also have telescope eyes. It’s one of the more unique looking breeds out there.

    7. Eggfish

    • Goldfish Type: Fancy
    • Adult Size: 6. 8 inches
    • Color Pattern: Various
    • Unique Traits: Egg-shaped body

    A special breed of fancy goldfish, the Eggfish Goldfish has an oblong shape with no dorsal fin and is considered a luxury item. These peaceful fish should be kept in tanks alongside slower-moving tankmates. Despite their costliness, these beautiful creatures are sure to bring delight to any aquarium they grace!

    8. Ranchu

    Ranchu-Goldfish
    • Goldfish Type: Fancy
    • Adult Size: 6. 8 inches
    • Color Pattern: Various
    • Unique Traits: Lack of dorsal fin and highly arched and rounded body

    Ranchu Goldfish are highly valued and resilient despite their delicate nature. Adaptable to a variety of tankmates in clean water conditions, they make for ideal aquatic companions if kept in smaller aquariums. Noted for its rounded back and large head with fleshy features, the Ranchu Goldfish is an attractive addition to any home setup.

    9. Lionhead Goldfish

    Lionhead-Goldfish
    • Goldfish Type: Fancy
    • Adult Size: 6. 8 inches
    • Color Pattern: Various
    • Unique Traits: Known for its pronounced “wen” or head growth that covers the top of the head and gill plates

    The Lionhead Goldfish is a type of small fish distinguished by its exceptional raspberry-like protrusion atop the head. They are an interesting novelty to have in your aquarium, but not recommended for inexperienced aquarists since they require special care and attention.

    These particular goldfish guarantee to draw interest when guests come over, who can resist such unique creatures?

    10. Telescope Goldfish

    Black-moor-goldfish in aquarium
    • Goldfish Type: Fancy
    • Adult Size: 6. 8 inches
    • Color Pattern: Various
    • Unique Traits: Large protruding eyes that resemble telescopes

    The Telescope Goldfish, related to its comet goldfish family, is a resilient and adaptive small breed with big eyes that need extra attention. If you’re looking for something new in your petite aquarium tank setup then the hardy telescope goldfish might be just what you’re after! One thing to note is that they are one of the more delicate goldfish varieties due to their sensitive eyes.

    11. Fantail Goldfish

    Fantail-Goldfish
    • Goldfish Type: Fancy
    • Adult Size: 6. 8 inches
    • Color Pattern: Various
    • Unique Traits: Split caudal or tail fin that forms its fan shape

    Featuring a distinct, beautiful forked tail and round shape, the Fancy Tail Goldfish is sure to bring life and energy into any aquarium. Their sociability enables them to not only coexist with other fish, but thrive in their presence as well! Fantail Goldfish can be caught. Be kept on their own or even within groups of tankmates. making these lively creatures an ideal addition no matter what type of setup you choose.

    12. Oranda Goldfish

    Oranda-Goldfish
    • Goldfish Type: Fancy
    • Adult Size: 6. 8 inches
    • Color Pattern: Various
    • Unique Traits: Known for its wen that covers the head. Body is deep and rounded similar to a Ryukin

    Finally, the Oranda Goldfish is a fragile breed which has a protrusion on its head. Their tanks must be managed properly and they need compatible fish mates to stay healthy. As such, adding this ornate species to your little aquarium will undoubtedly give it sophistication.

    Other Considerations

    While these goldfish breed didn’t make the list, you can definitely consider them:

    • Celestial goldfish
    • Ryukin goldfish
    • Tosakin goldfish
    • Shubunkin goldfish (for outdoor ponds)

    Understanding Their Characteristics

    When diving into the depths of tiny goldfish breeds, it’s like unearthing a trove of dazzling colors and captivating shapes. Among these aquatic jewels are two varieties. Slim-bodied and Fancy goldfish. known for their compatibility with small aquariums as well as distinct characteristics that make them stand out from other fish in this environment.

    Gallery-Of-Gold-fish

    From body shape to swimming habits, each breed has its own needs when being cared for. Yet all share attributes such as size appropriateness for aquaria, making it possible to appreciate different traits across multiple kinds of small goldfish breeds without taking up too much space!

    Size And Growth Potential

    The amazing thing about small goldfish breeds is their size and potential to grow. In spite of being so tiny for a goldfish they still get large for a freshwater fish.

    Their growth depends on tank maintenance, food quality and water conditions: thus providing an appropriate habitat is essential for these little fellows’ flourishing. Unfortunately enough, if those mini fish are held in confined aquariums, this could potentially stunt their development rate.

    Appearance And Color Patterns

    Goldfish breeds, especially those of small sizes, can be captivating in their diversity. Each has its own characteristics like the Celestial Goldfish’s pointed eyes and tall head growth on an Oranda, long fins with a Veiltail breed, or delicate Bubble Eye goldfish pouches. All these features make them interesting to watch and visually appealing.

    In terms of coloration, we are presented with spectacles from metallic red to bright yellow as well as a range that goes from solid through calico patterns along all goldfish species, including Bubble Eyes, which stand out among other members of this family.

    Small goldfish have managed to maintain variety between each type due exclusively to their uniqueness when compared not only within different individual breeds but also throughout many varieties, showcasing multiple nuances that make them desirable for aquariums around the world!

    Care Requirements

    Small goldfish breeds demand more than just an aquarium and some food. Special attention is required for them to be healthy and grow properly. The quality of their living environment is essential in this matter. They must have at least 20 gallons of water, regular replacement with fresh treated H2O, a reliable filter system, and a suitable temperature (between 60°F. 70°F).

    Diet-wise, they should alternate between live foods, pellets plus flakes so that their health stays optimal alongside their spirits lifted, Common Goldfish might seem common but tending to these fish calls for exceptional care measures!

    Tank Setup and Maintenance

    Keep small goldfish breeds healthy and happy requires special care when setting up and managing their tank. From sizing the aquarium to maintaining water quality, there is a lot of planning involved in creating an ideal environment for your little fish friends.

    Your setup should include selecting proper filtration systems and decorations that won’t harm delicate creatures or cause potential dangers within the confines of your pet’s home. It’s important to monitor levels such as pH regularly throughout all stages of maintenance and adjustment – not just during setup!

    Tank Size Recommendations

    It’s best to provide a 20-30 gallon tank for your small goldfish, as this allows them ample room in which to swim and prevents overcrowding issues that could cause distress or illness. While you may initially think 10 gallons is sufficient, the larger size will prove more beneficial for their well being.

    Water Conditions And Filtration

    Caring for small goldfish means regularly checking water pH and ammonia levels, along with making sure that the temperature is in range of 68° to 74°F. A reliable filter system should also be used to keep pollutants from accumulating and consequently harming aquatic life. Maintaining a balanced environment within these parameters helps ensure that your pet stays healthy throughout its lifetime.

    Decoration And Hiding Places

    Creating an environment conducive to your small goldfish’s health requires more than just decorations. Offering secure and suitable hiding spots and selecting pleasing décor for the tank can make a world of difference for your little fish.

    Great For Delicate Fins!
    Marina Naturals Plants
    Marina Naturals Plants

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    Including plants, rocks or maybe some fun accessories will not only give the aquarium an attractive look, but also be essential in creating a healthy habitat that is stimulating and comfortable for its inhabitant.

    Choosing Compatible Tank Mates

    When deciding on which tank mates to house with your small goldfish, it is as important as the size of the aquarium and monitoring water quality. Though these mini fish seem uncomplicated, choosing an inappropriate partner can cause distress and even lead to death. The following tips should help you select suitable companions for your little swimmers.

    Peaceful And Slow Swimming Fish

    When caring for small goldfish, it is wise to choose peaceful and slower-moving tank mates. These fish are not likely to fight with the Goldfish over food or space in the aquarium, making a healthy aquatic environment.

    Good companions include:

    All these species can live harmoniously together in one ecosystem when they meet basic requirements such as proper dieting and water parameters of pH level maintenance.

    Avoiding Aggressive Companions

    It is of the utmost importance to stay away from fish which display aggressive or quickly moving behaviour, as this could cause distress and injury for your small goldfish. Certain species like:

    With Betta Fish, the goldfish will actually harass and possibility even eat the Betta!

    Monitoring And Adjusting Tank Dynamics

    Goldfish are generally messy creatures and are hard on your bioload. Because of this, it’s important to monitor your tank parameters such as ammonia, nitrites, and nitrates.

    Other things to watch out for are pH and temperature. You can monitor your temperature with a thermometer or use an aquarium controller to keep your temperature stable. You can also use test kits to monitor the other parameters in your tank.

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    Summary

    While still large compared to other tropical fish available, it is possible to find smaller goldfish that you can place in a reasonably sized aquarium. If you want to keep a smaller tank, it is usually a better idea to opt for small fish instead. Either way, I have some FAQs to help you out on your journey.

    Frequently Asked Questions

    Is there a dwarf goldfish?

    A specific type of small-sized goldfish, Carassius praecipuus, native to central Laos, has recently been identified. This species can be distinguished by its diminutive size. With other varieties of the same fish.

    What is the smallest size goldfish tank?

    For the best possible environment for goldfish, it is recommended to obtain a 20-gallon tank at minimum. As they grow in size and number, you may need an even bigger aquarium such as one that holds 50 gallons of water or more, up to 100 gallon tanks are available.

    It’s important not to overlook how ammonia buildup can stress out fish living conditions. Hence, offering them enough space where they can thrive comfortably should be taken into consideration when setting up their home.

    What is the lifespan of a mini goldfish?

    Given the right environment, such as a pond or aquarium, mini goldfish have a potential lifespan of up to 20 years. If kept in an undersized bowl, their life expectancy is drastically reduced – usually only lasting 3-9 months due to poor water quality and space limitations.

    Can you buy small goldfish?

    You can purchase small goldfish from pet shops at different costs, with rarer species coming with a greater price tag. Prices of these fish may range anywhere between $5 and $100.

    How big do small goldfish usually get?

    Small goldfish breeds usually remain on the small side, typically reaching a size of 2-6 inches. Among them, Pompon Goldfish are especially miniature at an average length of only 5 inches. Consequently, they don’t get very big in general.

  • Fish In Cycling: The Emergency Guide I’ve Walked Countless Customers Through

    Fish In Cycling: The Emergency Guide I’ve Walked Countless Customers Through

    Over the years, I’ve had countless customers reach out to me in a panic. fish dying, tank cloudy, water parameters all over the place. Most of the time, they’d skipped cycling or didn’t even know what it was. Fish-in cycling is the method you use when there’s no other choice and livestock is already in the tank. It’s not ideal, but it’s survivable if you know what you’re doing. Here’s exactly what I walk people through when they find themselves in this situation.

    Key Takeaways

    • Adding fish to a new aquarium is never recommended, but you should know what to do in case it happens to you.
    • Fish-in cycles are dangerous due to ammonia, nitrite, and nitrate that are left unprocessed because beneficial bacteria aren’t present in the aquarium yet.
    • Regularly testing water parameters, daily water changes, limited feedings, adding fish slowly, adding plants, and dosing bacteria can all help in reducing the negative effects of a fish-in cycle.

    The Aquarium Cycle

    The aquarium nitrogen cycle is a complicated process in which bacteria grow and populate an aquatic system to sustain life. Bacteria take toxic ammonia and nitrite levels and convert them into safer nitrates. Cycling an aquarium without fish can take up to 6 weeks, but is usually finished between 2 to 4.

    The main reason why hobbyists wait to add fish until after the nitrogen cycle is because fish create a large amount of ammonia through waste and respiration. This becomes a problem as the population of bacteria in a new aquarium can’t keep up with the demand. As a result, ammonia levels spike, followed by nitrite levels, and eventually nitrates. This can lead to water parameters literally off the charts!

    Even when an aquarium is freshly cycled, most hobbyists wait several weeks or months for the tank to reach stability, only adding a couple of fish here and there. This ensures that the bacteria populations grow alongside the increasing influx of ammonia.

    Reasons Why It Isn’t the Best Practice

    While fish-in cycling is generally looked down upon in the aquarium hobby, it can sometimes be an honest mistake. Unfortunately, many new hobbyists are eager to start their tanks and rely on only one source of information or don’t do any research at all!

    If the only source of information is an employee at a local pet store, then the information might be incorrect or outdated. This is especially true if the employee works based on commission, where they are especially eager to sell the new hobbyists as much as they can, including a bag full of fish. Lack of research can also lead to impulsive buys and sudden fish deaths.

    Are there any benefits to fish-in cycling?

    No, there aren’t any benefits to fish-in cycling. An aquarium can only complete the nitrogen cycle with time and other methods won’t make a bacteria population grow any faster.

    If you’ve already started fish-in cycling though, then you’ll want to be prepared for the next steps.

    How To Successfully Pull Off Fish In Cycling (In 7 Steps)

    Remember, it’s not recommended to do fish-in cycling for your aquarium, but it’s best to be prepared if you find yourself in this situation.

    Here is how to handle an uncycled tank safely that already has fish in it!

    1. Test Water Parameters

    The most important aspect of any aquarium cycling is testing water parameters, even more so for fish-in cycling as fish can easily be affected by unsuitable conditions. In a fishless cycle, water parameters can largely be left uncontrolled, but fish need stability and nontoxic conditions.

    While there are no acceptable ammonia and nitrite levels for fish, it’s best to keep both under 1.0 ppm to keep fish safe; this should be enough to keep the nitrogen cycle going while making more tolerable conditions for your fish.

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    Along with ammonia and nitrite, nitrate levels should also be tested daily. Nitrate might take longer to appear in the aquarium as it’s one of the last compounds created by the nitrogen cycle. In general, nitrate levels can reach moderately high levels before they become toxic to fish, but a water change will be needed to reduce levels once past 20.0 to 40.0 ppm.

    Another crucial water parameter to test is pH. Water’s pH can be difficult to control, and it’s usually best to leave it untouched. However, if your tank is experiencing daily swings of 0.5 to 1.0, then some moderation will be needed.

    2. Water Changes

    More than likely, you will need to do many water changes between the time of the first fish being added and several weeks after the cycle has officially finished. Water changes are the best way of having an immediate effect on water parameters, so long as the source water is reliable.

    Depending on what your testing kit reads, you may need to do water changes once or twice a day until the parameters stabilize. How often a water change is needed will depend mostly on ammonia and nitrite levels, but nitrate can also become deadly at high levels and under extended exposure.

    How To Make A Water Change

    If you find your aquarium has nitrite or ammonia levels above 1.0 to 2.0 ppm, then a water change is needed. However, a large water change can also stress out fish and disrupt beneficial bacteria even more than they already are. Because of this, it’s recommended to do smaller, more consistent water changes.

    In general, one or two 25% water changes throughout the day will help keep levels manageable, though this will be different with every fish tank. If ammonia, nitrite, or nitrate levels skyrocket, then it may be necessary to complete a near-100% water change.

    Keep in mind that bacteria mostly colonize filter media and don’t live in the water column, so replacing the water is safe as long as the source water is safe.

    3. Source Water

    Understanding your source water is important for all stages of your fish tank’s life. Whether you decide to use tap water, distilled water, RO water, or RO/DI water, you should always know its baseline parameters.

    Unfortunately, many tap water options contain ammonia as a byproduct of chloramine treatment. Products like Seachem Prime can help detoxify harmful compounds. Increasing or lowering pH may also be necessary depending on the origin of the tap water.

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    4. Add Fish Slowly

    The worst thing you can do for any new tank is add too many fish too quickly. Adding a lot of fish at once causes ammonia spikes due to the additional bioload and the bacteria’s inability to process increased amounts.

    ⚠️ The #1 Killer: In my experience helping customers through this, overstocking is the thing that turns a manageable fish-in cycle into a full wipeout. Too many fish means too much ammonia, and beneficial bacteria simply can’t multiply fast enough to keep up. If you’re stuck cycling with fish, fewer fish in the tank dramatically increases your chances of pulling it off. If that means temporarily rehoming some fish, it’s worth it. you can add them back once the cycle is established.

    Adding a few hardy fish that can withstand less than ideal aquarium conditions is also a good way to give your tank a better chance of surviving its first few weeks. If able, add new fish the second day after the tank is set up. This will allow for some parameters, like water temperature, to stabilize. Even then, it is likely you will lose a few fish.

    If you’ve already added all the fish you’re ever going to get into a brand new, day-one, uncycled tank, then you will want to test water parameters daily–if not several times a day–and follow the other protocols on this list.

    5. Feeding

    Another way to make the cycling process safer is by limiting feeding. During this time, fish will naturally be stressed and won’t need to eat as often as they usually do. Limiting the amount and frequency of feeding also has a few other benefits to keeping toxic levels down.

    In any established tank, overfeeding can cause ammonia or nitrite to spike. This is because uneaten food breaks down like any other organic in the aquarium, causing it to contribute to ammonia, nitrite, and nitrate levels. This is also why leftover food should be removed from the tank within 5 minutes of being offered. To help prevent overfeeding and increasing waste load, only a flake or two should be offered at any given time.

    Even though your fish might ask you for food, most aquarium species are hardy fish that can easily go several days without feeding. For an uncycled aquarium, it’s recommended to only feed one small portion every other day. This will also naturally decrease the amount of waste entering the system as less fish food is being processed.

    6. Add Plants

    Aquatic plants benefit any freshwater system, but they’re especially helpful when trying to keep toxic compounds out of an uncycled tank. The main reasons for having a planted tank include processing waste, increasing oxygen levels, and introducing pre-established beneficial bacteria colonies.

    In order to grow, plants process nutrients from the water column and the substrate. These essential nutrients just so happen to be nitrate and some parts of ammonia and nitrite. Plants can be used to decrease the impact of ammonia buildup, though how much will depend on how many plants are added. There are also some plants that are more suited for nutrient reduction, such as Azolla, Hornwort, and Watersprite

    A planted aquarium will also have more available oxygen than one without plants. In addition to nutrients, live plants also require carbon dioxide to complete photosynthesis. Oxygen is a byproduct of this process and is introduced into the water column. Additional oxygen is crucial for fish experiencing ammonia or nitrite poisoning as those compounds can start to burn the gills and affect breathing ability.

    Lastly, adding plants will help transfer some beneficial bacteria from one cycled aquarium to an uncycled one via plants. Many bacteria will be lost in the transfer, but some should be able to be established in the new uncycled tank. This should help increase beneficial bacterial growth and population.

    7. Add Beneficial Bacteria

    Bottled beneficial bacteria is a relatively new product available at most local fish stores. Often, these products are advertised as being able to instantly cycle an aquarium, making conditions safe for the immediate addition of fish. While bottled bacteria should help introduce bacteria into the aquarium, it doesn’t guarantee that they’ll actually grow.

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    The idea behind bottled beneficial bacteria is that you’re instantly introducing a colony of bacteria that can process fish waste and other contaminants1. This doesn’t mean that you’re skipping the nitrogen cycle, but rather that you’re facilitating the bacterial growth necessary to complete it.

    For some tanks, this works. But for others, it’s a false promise. While it won’t hurt your aquarium to dose beneficial bacteria during the cycling process, continue to follow the other recommendations on this list for extra security.

    🏆 Mark’s Take: When customers call me in a panic about an uncycled tank, my three-part answer is always the same: dose a quality bottled bacteria product, stay on top of daily water changes to knock back ammonia, and reduce your fish load if you can. Those three things together give you the best shot at getting through this without losing fish. Don’t try to ride it out with just one of the three. you need all of them working together.

    Other Tips And Tricks

    The best way to safely make it through having fish in an uncycled tank is by monitoring it and making changes gradually. Remember that making big changes on top of already stressful conditions will only make things worse.

    A few tips to getting through an uncycled fish tank emergency, on top of the other methods on this list, include: adding filter media from another cycled aquarium and asking your local fish if they’ll hold your fish for you.

    As mentioned before, most of the bacteria that live in an aquarium grow within the filter cartridge and media. The easiest way to introduce, and sometimes even complete aquarium cycling, is by transplanting media from an already-established tank to the new one.

    Some hobbyists also transfer ‘aquarium gunk’, which is the sludge-like organic matter often at the bottom of the tank or filter, which is teeming with biodiversity and bacteria. This transfer will effectively allow beneficial bacteria to continue processing the new tank just as it was in the previous one.

    If everything on this list fails and your new fish are gasping for air, then it might not be too late to ask your local fish store or a fellow hobbyist for help. Many aquarium stores are willing to help out their patrons in regards to quarantining a few fish. They may provide a space for fish to stay while the aquarium cycling continues. If not, a fellow hobbyist may also have the means to make accommodations.

    FAQS

    What does a fish-in cycle mean?

    A fish-in cycle means that fish are present in the tank during the initial nitrogen cycle. This is often a fishless process as fish depend on beneficial bacteria to make the aquarium safe; fish produce toxic ammonia, nitrite, and nitrate that need to be processed by bacteria for safe conditions.

    Fish-in cycles were once a popular method due to a lack of research and bad information. Information about the aquarium industry and husbandry was difficult to come by, and many store employees were–and still are–uneducated about the true process.

    How long should a fish-in cycle take?

    A fish-in cycle can take a week but it can also take two months. How long your tank takes to cycle will depend on how quickly your bacteria can grow, which varies from tank to tank.

    A fish-in cycle should be fast but as thorough as possible; while you want conditions to be safe as soon as possible, you also want to give your bacteria time to grow and colonize the aquarium for future stability.

    In general, a fish-in cycle can become a ‘ghost’ cycle in as little as a week, especially if it is a heavily planted aquarium. A ghost cycle is when the nitrogen cycle is happening in the aquarium, but goes undetected due to ammonia, nitrite, and nitrate being processed faster than can be tested. As mentioned above, plants take up nutrients, decreasing their presence in the tank water. This can make it seem like it’s a fully cycled tank, but the process is still happening.

    Can I add fish during cycling?

    It is not recommended to add fish during a cycle, but you might find yourself in this scenario. Check water parameters, change water as necessary, add only a few fish at a time or stop entirely, make feeding adjustments, add plants, and dose bottled bacteria.

    Which fish are best for cycling?

    If you must add fish to a new tank, then it’s best to add extremely hardy species, like danios, guppies, and platys.

    Should I do water changes during a fish-in cycle?

    Yes! Water changes are the best way to keep parameters in check at any stage of a new tank. Especially in a fish-in cycle, testing water parameters and performing water changes as necessary to keep ammonia, nitrite, and nitrate levels down may just be what keeps your fish alive.

    Final Thoughts

    It is never recommended to add fish to a completely new tank, but you might not have known or were given bad information. Luckily, there are a few ways to mitigate the harsh effects of ammonia, nitrite, and nitrate created by more fish waste and respiration. Some of these methods include water changes, limited feeding, and dosing bottled bacteria. If all else fails, you may ask your local fish store or a fellow hobbyist to hold your fish while the cycle continues.

  • Why There Are No Fish For 1 Gallon Tanks That You Can Keep

    Why There Are No Fish For 1 Gallon Tanks That You Can Keep

    I get asked regularly about stocking 1-gallon tanks, and my answer is always honest: there are no fish that can be kept humanely in a 1-gallon aquarium. After 25 years in this hobby I’ve seen the results of trying. stressed, short-lived fish in inadequate conditions. This guide explains why, and what the actual minimum tank sizes are.

    Are you considering buying a 1-gallon fish tank? A compact aquarium is an attractive idea for many fishkeepers, but such a small tank is not a wise choice for a beginner.

    Read this article to explore the potential uses for a 1-gallon fish tank and learn why there are no suitable fish for 1 gallon tank setups. Let’s dive in!

    Key Takeaways

    • A 1 gallon fish tank or bowl is too small to keep live aquarium fish long-term. They may survive, but they will not thrive in such a cramped space.
    • It is possible to keep nano fish like bettas in a 1-gallon tank as a temporary solution, although you need to keep a close eye on water parameters and perform frequent water changes. A heavily planted small tank will help you maintain stable water parameters.
    • Experienced aquarists may attempt to keep fish in micro aquariums, but there’s no good reason to attempt this with live animals. A 5-gallon tank is the minimum recommended size for a fish tank, although larger tanks in the 15 to the 20-gallon range are better for beginners.
    • Live plants are a better choice for a 1 gallon tank, although small snail species and ghost shrimp or neocaridina/ red cherry shrimp can also be kept in small tanks.

    Can You Keep Fish in a 1 Gallon Tank?

    Before we go into too much detail, let’s start off with the big question. Can fish live in a one-gallon tank? The simple answer is yes, but as you’ll learn, there’s a lot more to this question than a simple yes or no.

    The next question we need to ask is, should fish live in a one-gallon tank, and the answer is no, at least not in the long term.

    Read on as we explore some of the reasons why such a small tank is just not enough space for pet fish.

    The Natural Habitat Debate

    Sure, many fish live in very small ponds in nature. Betta fish are known to survive in shallow ditches, and some killifish even complete their entire lifecycles in large rain puddles!

    However, even the smallest of these ponds and puddles are much larger than a gallon. Shallow freshwater ecosystems are also usually well-vegetated and complete with organisms that help to maintain water quality. Recreating a functional ecosystem is possible in aquariums but very difficult in a micro setup.

    Aquarium Size and Swimming Space

    One-gallon fish tanks measure about 8 inches long, 6 inches wide, and about 5 inches tall (20x15x13cm). 1-gallon bowls are more common than tanks, and these typically have a diameter of about 8 inches.

    That’s really not a lot of space for a fish to swim, so immediately, you run into potential problems for active swimming fish like zebra danios. It’s also important to note that most small fish live in schools or shoals in nature, so it’s best to keep them in groups of six or more.

    Hardware And Decorations

    Most fish prefer some sort of cover in their tank, like caves where they can hide or plants where they can shelter. However, your space is already pretty limited in a 1-gallon tank, so everything you add to the tank decreases the space for your fish.

    The small size of this tank also makes it difficult to find aquarium equipment like heaters and filters.

    Water Quality

    Maintaining high water quality and stable water parameters is your number-one goal as a fishkeeper. Water quality tends to decrease over time, and at a certain point, fish become sick and even perish in bad water. Now, even large aquariums need regular maintenance, but things can go bad very quickly in a small tank!

    As uneaten food and fish waste collects in a fish tank, ammonia accumulates in the water before being converted into nitrite and then nitrate. Ammonia and nitrite are highly toxic to fish, so without a functioning colony of beneficial bacteria in a properly cycled tank, your pets are likely to get sick.

    It is possible to cycle a micro aquarium, but such a small tank would be in a delicate balance and very sensitive to increased nutrient levels and other disturbances.

    What Can You Keep in a Small Aquarium?

    Many small fish and invertebrates are suitable for small aquariums, although 5 gallons is the smallest you want to go for long-term care.

    That being said, many species can survive in a 1-gallon tank, but they are not likely to enjoy the experience! That means a 1-gallon setup is usually only recommended as a temporary solution and not as your pet’s forever home.

    Nano Species

    School of Rasboras

    Nano fish are small species, usually growing to less than about 2 inches. The smallest nano species in the fish keeping hobby grow to about 0.75 inches or so, but even larger species like the betta fish are often kept in tiny tanks.

    Let’s take a look at a few small fish species and discuss whether they are suitable for a small one-gallon tank.

    • Betta Fish

    The betta, or Siamese fighting fish, is usually the first choice for fish keepers who want a tiny tank, but a 1-gallon tank is simply too small for an adult betta fish. Sure, these popular fish are often sold in tiny tubs or cups in the aquarium trade, but if you look a little closer, those fish don’t look very happy or healthy!

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    A 5-gallon aquarium with a filter and a heater is a much better long-term solution for betta fish care, and really is the minimum tank size you should consider for these beautiful fish.

    • White Cloud Minnows

    White cloud mountain minnows are popular cool-water nano fish for smaller tanks. These freshwater aquarium fish max out at about an inch and a half, and their hardy nature makes them a great choice for a beginner.

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    However, white clouds are not recommended for tanks smaller than five gallons, and ten gallons is actually their recommended minimum tank size.

    • Japanese Rice Fish
    Japanese Rice Fish
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    Japanese rice fish, also known as Medaka, are tiny fish that are often kept in small aquariums. Like most other nano fish, they could certainly survive in a tiny one-gallon tank, but it would be very difficult to keep them healthy, and that’s why they’re much better off in a ten-gallon aquarium.

    • Neon Tetras
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    Neon tetras may be small (up to 1.5 inches), but these stunning schooling fish from South America need a bigger tank than you might think. In fact, 10 gallons is the smallest you’d want to go for these active swimmers, but 15 to 20 gallons is a much better option.

    • Least Killifish

    The least killifish is a truly tiny creature, and one of the species with the smallest tank requirements in the hobby. Males grow to less than an inch, and females grow a little more than an inch.

    A pair of least killifish can be kept in a tank as small as 3 gallons or so, but again, a larger tank in the 5- 10 gallon range would be better.

    Invertebrates

    Invertebrates (mollusks, crustaceans, etc.) are a popular choice for a smaller aquarium due to their small size and low bioload. Let’s take a look at some popular inverts that can survive in a smaller tank.

    • Snails

    Snails are popular freshwater aquarium pets that don’t need a huge tank to thrive. However, a 1-gallon tank is a little too small for some species.

    You could attempt a 1-gallon setup for small species like bladder snails, but larger aquariums are necessary for bigger species and assassin snails.

    • Shrimp

    It is possible to keep shrimp in a 1-gallon size tank, but you run the same water quality risks as when keeping fish. A few ghost shrimp could work in a 1-gallon tank with live plants and careful monitoring, but a larger aquarium is always a better bet.

    Live Plants

    Live aquarium plants are a great option for a small space, and have the added benefit of stabilizing water parameters, which is great if you do need to keep any invertebrates or fish in the tank temporarily.

    Many aquarium plants grow too large for a 1-gallon tank or bowl, so make sure you choose miniature species. The following popular aquarium plants are suitable for a small tank:

    What To Do With Them?

    The question of keeping fish in a 1-gallon tank mostly centers around ethics. Remember, the simple answer is that a small fish will survive in a 1-gallon tank, and maybe even live a full and healthy life if you’re experienced and dedicated enough to perform frequent water quality maintenance.

    However, you should also ask yourself why you’re keeping fish in the first place and whether survival is enough or if you want your pets to be as comfortable as possible. Looking at it from this perspective, there are just a few scenarios where you might consider keeping fish in such a small environment.

    Read on to learn when you could keep fish in a one-gallon aquarium and discover alternative options for your tiny tank.

    Connect Multiple Aquariums

    There is one scenario that would theoretically allow you to keep a few species permanently in 1-gallon aquariums, but this is something only experienced aquarists should attempt.

    Without going into too much detail, it is possible to plumb multiple tanks together and use a central sump system to pump water through all of them. Ten one-gallon tanks connected would allow you to keep multiple small tanks with small fish while having a better chance of maintaining good water parameters.

    It’s important to remember that each fish will still be confined to its own tank, so this is only a good option for the smallest nanofish and species that do not need much swimming space. You’ll also need excellent filtration to maintain good water quality, and some live plants will also help to stabilize the system.

    Possible species for a multiple-tank setup include:

    Parasites and infections spread easily in this kind of setup, so it’s important to quarantine any fish before adding them to the system. This usually involves keeping new fish in a separate cycled tank for three or four weeks to observe their condition and medicate if necessary.

    Temporary Housing

    It’s always handy to have a spare tank on hand for emergencies. If a new fish in your community tank turns out to be a bully, or if one of the other fish is getting picked on, you may need to move one to a separate tank while considering your options.

    Small tanks are also useful for quarantining or medicating sick fish outside of their regular tank. This is especially useful when using medications that are harmful to other animals in a community tank.

    You could also use a tiny tank as a temporary housing solution when remodeling one of your larger tanks, but you’ll need to pay close attention to your water parameters and quality. Overfeeding is one of the biggest dangers when moving your fish to a very small tank because excess nutrients from uneaten food can cause rapid changes in water quality.

    It is especially important to understand the nitrogen cycle before attempting to keep anything in a small tank, whether it’s a long-term or just a temporary solution. You’ll also need a reliable test kit to monitor your water parameters and develop a water change schedule.

    Growing Live Food

    A one-gallon tank might be too small for fish, but this tank size is pretty handy for growing your own fish food. Culturing live food is a great idea for feeding picky fish like the scarlet badis and pea puffer.

    You could try breeding bladder snails, daphnia, or even mosquito larvae to provide your fish with a free and healthy food source. Just make sure none of those mosquitos escape! Infusoria is a great starter food for fish fry that you can grow in a small tank.

    You can also grow algae on rocks if you keep your tank in a sunny area. This is a great natural food source for algae eaters like the otocinclus catfish and some of the Southeast Asian gobies.

    Try A Terrarium

    You could also try something completely different with a one-gallon fish tank and convert it into a terrarium. Miniature cacti or other succulent plants look great in small glass enclosures, but almost any small plant could survive with the right soil, nutrients, and light.

    You’ll still need to water your plants, but they’ll be much easier to care for than live fish in such a tiny space!

    FAQs

    What fish can live in a one-gallon tank?

    Pretty much any small fish can survive in a 1-gallon tank for as long as you can maintain suitable water quality. However, a one-gallon tank is really too small for the long-term care of any fish species, especially if you care about the welfare of your pets.

    Can a betta live in a 1-gallon tank?

    Betta fish will survive in a one-gallon fish tank, although they will be very cramped and difficult to care for in the long-term. A five-gallon aquarium is the minimum recommended size for a betta fish tank.

    How many guppies can live in a 1-gallon tank?

    You could keep a single male guppy in a 1-gallon aquarium, although it would be much better to keep a small group of five or six in a decent 15-gallon tank with filtration and heating.

    What is the best fish for a small aquarium?

    Each fish keeper has their own favorite small fish species, but I do not recommend keeping any freshwater aquarium fish in a tank size smaller than 5 gallons. This tank size will make a great home for bettas and killifish.

    Step up to a 15-gallon aquarium to keep even more fish like small tetras, rasboras, and honey gouramis. At this tank size, you can even keep a small community and observe the interesting behavior of happy schooling fish!

    Can 2 goldfish live in a 1-gallon tank?

    Goldfish need a surprisingly large aquarium for long-term survival. A pair of adult goldfish requires at least 30 gallons, so a 1-gallon tank or bowl just isn’t going to work!

    Can snails live in a 1-gallon tank?

    Like all aquatic creatures, snails produce waste that can accumulate and affect water quality. Many aquarium snail species are very hardy, but you’d still need to clean their tank regularly and perform a few water changes each week to keep their water quality high. Small species like bladder snails could be an interesting option for a 1-gallon aquarium.

    Final Thoughts

    Unfortunately, a one gallon aquarium is just too small for keeping fish. However, there are a few things you can do with such a small tank, so don’t be too quick to put your tiny aquarium up for sale! Micro setups are great for growing plants, growing live food, or housing fish for short periods in emergencies.

    Do you have a one-gallon aquarium? Let us know what you keep in your tiny tank!

  • 15 Small Pleco Species That Won’t Outgrow Your Tank

    15 Small Pleco Species That Won’t Outgrow Your Tank

    Most plecos outgrow most tanks. The species on this list do not. These are the plecos that actually work in standard aquariums without turning into a 12-inch problem.

    If the pleco you are considering is not on this list, double check its adult size before you buy.

    The “pleco problem” in the hobby is real: that little 2-inch fish at the pet store labeled “algae eater” is almost certainly a common pleco that will hit 18 to 24 inches within a few years and eat everything in sight except the algae you actually want eliminated. I’ve seen these fish abandoned in public ponds because their owners had no idea what they’d bought. The good news is that small pleco species. Bristlenoses, clown plecos, zebra plecos, and a dozen others. Stay under 5 or 6 inches, work in standard community tanks, and in many cases are better algae eaters per inch than the common pleco anyway. Bristlenose plecos, for example, are rasp-mouth machines that will clean glass and driftwood more efficiently than almost anything else their size. Here are 15 small pleco species worth knowing.

    It’s not uncommon to think this since you may have heard how big some species get. In today’s blog post, I will focus on small pleco species. These plecos are some of the smallest pleco species in the hobby and will fit in many community tanks. There are many options for you to choose from, but I’m focusing on my top 15, all with key info and photos to help you pick the best one for you!

    Key Takeaways

    • There are over 150 pleco species, with several being under 6 inches in size
    • Several examples clude Zebra, Clown, and Bristlenose plecos
    • Make sure to provide the right environment and nutrition to ensure these fish thrive in your aquarium and community
    • Most plecos are peaceful, but may be aggressive towards members of their own species or other bottom dwellers

    The Top 15 Small Pleco Species

    Finding the perfect small pleco species for your fish tank is an enjoyable experience. Plecos are not only attractive, but also aid in preserving a healthy aquatic atmosphere. Below, we present 15 tiny pleco varieties that make suitable companions for those with limited tank size – from popular Bristlenose to eye-catching Zebra ones!

    Take note of the following key states that I will provide for each pleco fish breed:

    • Common Name
    • L-Number
    • Scientific Name
    • Origin
    • Adult Size
    • Minimum Tank Size
    • Care Level
    • Temperament
    • pH
    • Temperature

    1. Bristlenose

    Bristlenose Pleco
    Bristlenose Pleco

    The Bristlenose Pleco is a smaller Pleco that does a great job of eating algae. Peaceful and gets along with most fish

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    • Common Names: Bushynose pleco, bristlenose pleco, Bristlenose catfish
    • L-Number: Ancistrus sp.3
    • Scientific Name: Ancistrus cirrhosus
    • Origin: Argentina
    • Adult Size: 3.5. 5 inches
    • Minimum Tank Size: 20 gallons
    • Care Level: Easy
    • Temperament: Peaceful
    • pH: 5.5-7.5
    • Temperature: 70-79 °F

    Aquarium aficionados will love the Bristlenose Pleco, an armored catfish species known for its remarkable appearance. This Ancistrus genus member is native to South America’s Amazon River basin and features small bristles on its snout, a unique trait that sets it apart from other plecos. You can find these fish in calico, piebald, albino and super-red color variations for those who want some added diversity among their tank inhabitants.

    When housing your new Bristolenese Pleco friend, you should consider at least 20 gallons of space but if possible go with a larger 30 or 40 gallon breeder Tank due to having more bottom surface space. Make sure there are plenty of places where they can hide along with heavily oxygenated water currents necessary for optimal health. They love to munch on driftwood so try adding it so they have sometime to graze on.

    Their gentle nature of this suckermouth catfish makes them ideal cohabitants inside community aquariums plus they will consume any algae!

    2. Clown

    Clown-Pleco
    • Common Names: Clown Pleco, Clown Panaque
    • L-Number: L-104
    • Scientific Name: Panaqolus maccus
    • Origin: Venezuela
    • Adult Size: 3.5 inches
    • Minimum Tank Size: 20 gallons
    • Care Level: Easy
    • Temperament: Peaceful
    • pH: 6.8-7.6
    • Temperature: 73-82°F

    Clown Plecos, scientifically known as Panaqolus maccus and able to grow up to 3.5 inches in size, are often seen as a captivating addition for smaller tanks due to their eye-catching colorings and algae eating habits. They enjoy living with schooling fish, small cichlids, and tetras without any negative interactions because of their peaceful nature.

    In order to keep them healthy, it is essential that driftwood be present within the tank, which serves not only aesthetic purposes but also nutritional benefits since they primarily feed on various types of woods found amongst underwater aquatic habitats. Vegetables such as squash or cucumber should also make additions. At the same time, frozen foods and wafers is added to their feeding schedule.

    Overall, clown plecos makes these fish relatively easy long-term care companions that require very little maintenance outside careful provisioning once settled into its new environment.!

    3. Zebra

    Zebra-Pleco
    • Common Names: Zebra pleco
    • L-Number: L046
    • Scientific Name: Hypancistrus zebra
    • Origin: Brazil
    • Adult Size: 3.2 inches
    • Minimum Tank Size: 15 gallons
    • Care Level: Moderate-advanced
    • Temperament: Peaceful
    • pH: 6-7.5
    • Temperature: 79-86°F

    The Zebra Pleco is a remarkable species of peaceful and carnivorous fish known for its black and white striped pattern. At most, these plecos grow to 3.5 inches making them an ideal size for aquariums alike! To ensure they stay comfortable, the tank should emulate their natural habitat which includes driftwood, rocks with rounded edges as well as sand-based substrate complete with strong currents and high oxygen levels.

    It’s crucial that this tiny creature receives plenty of meaty foods such as bloodworms in order to feed adequately on the proteins needed due to their strict carnivore dieting habits (yes they are primarily a carnivore!). If all these prerequisites are met, you will be rewarded handsomely when your zebra pleco morphs into an attractive focal point in your aquarium! Keep in mind that zebra plecos are one of the most expensive pleco breeds you can purchase in the hobby.

    4. Blue Black Beggini

    • Common Names: Blue Panaque, Flyer Pleco
    • L-Number: L235
    • Scientific Name: Panaque sp
    • Origin: Brazil, specifically found in the Rio Xingu
    • Adult Size: 3.2 inches
    • Minimum Tank Size: 50 gallons
    • Care Level: Moderate
    • Temperament: Peaceful
    • pH: 5.5 to 7.5
    • Temperature: 73°F to 84°F

    The Blue Black Beggini, with its particular dull charcoal black shade tinged with blue hues, is a captivating species that can grow up to 3.2 inches in size when bred correctly. It makes an attractive choice for aquarists wanting something unique and simple to care for.

    To look after the stunning pleco optimally one should maintain a pH level of 6.0 -6.5 (though it can adapt to a larger range) and give it an assortment of vegetation. They are a great addition to community tanks when kept with similar sized fish.

    5. Pitbull

    • Common Names: Pitbull Pleco
    • L-Number: LDA 25
    • Scientific Name: Parotocinclus jumbo
    • Origin: South America, specifically found in the Rio Tocantins basin in Brazil
    • Adult Size: They are relatively small, reaching about 2-2.5 inches (5-6.5 cm) in length.
    • Minimum Tank Size: A minimum of 20 gallons (75 liters)
    • Care Level: Easy to Moderate
    • Temperament: Peaceful
    • pH: 6.4 to 7.6
    • Temperature: The ideal temperature range is between 68°F to 78°F.

    The Pitbull Pleco, a South American species that can reach up to 2.3 inches in size, is an excellent choice for those with minimal room in their aquariums. In order to house it in the perfect environment and enough space, it’s ideal to put them into a 20-gallon tank, which should have driftwood, rounded stones, and hiding spots included.

    Its diet consists of algae, but pitbull plecos can benefit from treats such as bloodworms or shrimp pellets once in a while too! In the wild they live in shallow low current waters with rocky bottoms.

    6. Gold Spot Dwarf

    • Common Names: Gold Spot Pleco
    • L-Number: L001
    • Scientific Name: Pterygoplichthys joselimaianus
    • Origin: Brazil
    • Adult Size: 2″
    • Minimum Tank Size: 20 gallons
    • Care Level: Moderate
    • Temperament: Peaceful
    • pH: 5.8 to 7.5
    • Temperature: 71°F to 82°F

    The Gold Spot Dwarf Pleco is an attractive, small species that stands out with its dark base color and yellow markings on its body. These omnivorous plecos make a great addition to community tanks as they can live in harmony alongside small tetras and other fish varieties.

    To keep this gold spot dwarf healthy, it’s important to have the correct environment. Specifically maintaining pH levels between 6.4 – 7.5 (I included a larger range in the states as they can adapt) and temperatures of 68-78°F. With proper care, any tank can become more vibrant by housing one of these unique plecos!

    7. Queen Arabesque Pleco

    • Common Names: Queen Arabesque Pleco
    • L-Number: L260
    • Scientific Name: Hypancistrus sp.
    • Origin: South America, specifically from the Rio Tapajós basin in Brazil
    • Adult Size: 3.5 inches
    • Minimum Tank Size: 20 to 30 gallons (75 to 114 liters)
    • Care Level: Moderate
    • Temperament: Peaceful
    • pH: 6.4 to 7.6
    • Temperature: Ideal temperature range is between 73°F and 82°F (25°C to 28°C).

    The Queen Arabesque Pleco is an eye-catching species that will reach 3.5 inches in length at full size. Characterized by its intricate pattern and peaceful demeanour, this pleco requires strong water flow with high oxygen levels to do well in a tank setup. Hiding spots are also necessary for it to thrive so they feel safe from potential predators or disturbances from other inhabitants of the aquarium habitat.

    When selecting food options, focus on providing them with meaty meals such as bloodworms, mussel pellets and shrimp flakes. They are sensitive to high nitrates so water needs to be kept extra pristine. When paired correctly with compatible tankmates they will blossom into an impressive centerpiece!

    8. Alenquer Tiger

    • Common Names: Alenquer Tiger Pleco, Tangerine Tiger Pleco
    • L-Number: L397
    • Scientific Name: Panaqolus sp.
    • Origin: found in the rivers near Alenquer, Brazil.
    • Adult Size: 4″ inches
    • Minimum Tank Size: 30 gallons (113 liters)
    • Care Level: Moderate
    • Temperament: Peaceful
    • pH: 6.4 to 7.7
    • Temperature: 75°F and 86°F

    The Alenquer Tiger, also known as the Tangerine Tiger Pleco, is a captivating fish with its distinctive orange and black stripes. It grows up to 4 inches in size and has been successfully bred for aquariums, making it an attractive addition. To ensure your algae remains healthy, the aquarium needs an environment with pH 6.4 – 7.7 along with food like algae wafers intermixed with meaty items.

    9. King Tiger

    • Common Names: King Tiger Pleco
    • L-number: L066
    • Scientific Name: Hypancistrus sp
    • Origin: This species is native to the rivers of Brazil, particularly in the Amazon River basin.
    • Adult Size: 4-6 inches.
    • Minimum Tank Size: 30 gallons
    • Care Level: Moderate
    • Temperament: Peaceful
    • pH: 5.8 to 7.0
    • Temperature: 77°F and 84°F

    The King Tiger Pleco, a species of small plecos bigger that only get to 4-6 inches, is distinguished by its light base and tiger like dark lines with transparent fins. These curious creatures should be provided with an aquarium that features great water circulation as well as ample oxygen levels. Also, they will need a meaty diet such as bloodworms, mussels or shrimp pellets for optimal care.

    This pleco is often compared to other L species, but this is the original. Other similar plecos include L333, L399, and L401

    10. Rubbernose

    • Common Names: Rubbernose Pleco, Rubberlip Pleco
    • L-Number: L187
    • Scientific Name: Chaetostoma milesi (There’s some debate on the exact scientific classification, but this is commonly accepted.)
    • Origin: South America, particularly found in the Andean river systems in Colombia and Venezuela
    • Adult Size: 4-5 inches
    • Minimum Tank Size: 20 gallon long, otherwise 30 gallons
    • Care Level: Moderate
    • Temperament: Peaceful
    • pH: 6.8 to 7.8
    • Temperature: 66°F and 77°F

    The Rubbernose Pleco (video source), also known as the Rubber Lip Pleco or Lip Pleco, is a small species that is maintained in a 20 gallon long aquarium. These fish are quite lively when searching for food and need plenty of room to swim around horizontally, adding an enjoyable element to any tank system.

    Their diet should include various kinds of hair algae, and they can even eat Black Beard Algae. They is trained to eat wafers, but this species will prefer live and frozen foods.

    11. Leopard Frog

    • Common Names: Leopard Frog Pleco, Imperial Tiger Pleco
    • Scientific Name: Peckoltia compta
    • L-Number: L134
    • Origin: Amazon Basin, specifically from the lower and middle stretches of the Tapajós River in Brazil
    • Adult Size: 3.5 – 4.5 inches
    • Minimum Tank Size: 30 gallons
    • Care Level: Moderate
    • Temperament: Peaceful
    • pH: 5.0 to 7.4
    • Temperature: Ideal temperature range is between 75F and 82°F

    This species of pleco is captivating, distinguishable by its starkly contrasting black and white stripes. A manageable 3.5 inches in size when fully grown, the Leopard Frog Pleco is a great addition to any tank environment that resembles their native deep river channels – with sand-filled substrate areas coupled with rocks and driftwood for them to hide among. They enjoy high protein food such as bloodworms as much as veggies like cucumber slices. They do great with small to medium sized fish.

    12. Dwarf Snowball

    • Common Names: Dwarf Snowball Pleco, Snowball Pleco
    • Scientific Name: Hypancistrus contradens
    • L-Number: L102
    • Origin: South America, specifically found in the Rio Negro basin in Brazil
    • Adult Size: Up to 6 inches
    • Minimum Tank Size: 30 gallons
    • Care Level: Moderate
    • Temperament: Peaceful
    • pH: 5.4 to 7.6
    • Temperature: Ideal temperature range is between 72°F and 86°F

    The Dwarf Snowball Pleco (video source) is one of the largest on this list growing to just under 6 inches in length. It stands out with a dark base coloration and spots along its fins and body. This omnivorous pleco can thrive when living alongside small tetras or other smaller fish species, making it suitable for adding to any community aquarium setup.

    They prefer a strong current so they should be housed with other fish that prefer stronger water flow.

    13. Angelicus Pleco

    • Common Names: Angelicus Pleco
    • Scientific Name: Panaque angelicus (sometimes listed under Peckoltia angelicus)
    • L-Number: L004
    • Origin: South America, specifically the river basins of Brazil and possibly Venezuela.
    • Adult Size: 4 inches
    • Minimum Tank Size: 30 gallon tank
    • Care Level: Moderate
    • Temperament: Peaceful
    • pH: 6.6 to 7.6
    • Temperature: The ideal temperature range is between 75°F and 82°F

    Angelicus Pleco (video source) is a beautiful fish that can reach up to 4 inches in size and has an intriguing spot pattern on its body. It must live in water with strong currents and high levels of oxygen for optimal health, making it ideal for aquarists looking to add strong swimming fish like rainbowfish.

    They don’t eat plants and aren’t large enough to uproot them. Care should be take to make sure they get enough food to eat.

    14. Fine Spotted Pleco

    • Common Names: Fine Spotted Pleco, Starlight Bristlenose Pleco
    • Scientific Name: Hypancistrus sp.
    • L-Number: L262
    • Origin: South America, specifically found in the Rio Negro basin in Brazil
    • Adult Size: 3.5 inches
    • Minimum Tank Size: 30 gallons
    • Care Level: Moderate
    • Temperament: Peaceful
    • pH: 6.0 to 7.5
    • Temperature: 76°F to 82°F

    The Fine Spotted Pleco is a small species that reaches no more than 3.5 inches, making it suitable for limited tank sizes and ideal to include in community tanks. This attractive fish is identified by its light base color with dark lines as well as transparent fins.

    They require plenty of oxygen-rich water flow plus an omnivorous diet consisting mostly of meaty food items such as bloodworms, mussels and shrimp pellets as they are carnivores. They will do well with similar sized fish.

    15. Starlight Pleco

    • Common Names: Starlight Pleco, White Seam Pleco
    • Scientific Name: Ancistrus dolichopterus
    • L-Number: L183
    • Origin: Manaus, Brazil
    • Adult Size: 4.5 inches
    • Minimum Tank Size: 30 gallons
    • Care Level: Moderate
    • Temperament: Peaceful
    • pH: 5.0 to 6.5
    • Temperature: 73°F and 83°F

    The Starlight Pleco is a fascinating species that can reach up to 4.5 inches in length and boasts attractive patterning on its body with trademark white highlights on it’s dorsal and tail fins. This peaceful fish will need conditions with high oxygen levels as well as good water flow, making them ideal for any aquarist looking for something out of the ordinary!

    Like most Plecos on this list, they are omnivores and appreciate vegetables from time to time. They are appropriate with most community fish as long as they aren’t very large or overly territorial.

    Others

    We only kept our list to 15. However, there are a lot more. If we missed anything and if you have a species you would like mentioned,, drop us a comment below, and we will add it to our list.

    • Gold spot dwarf plecos
    • Rubber lipped pleco
    • Candy striped pleco

    Frequently Asked Questions

    What do plecos eat?

    Plecos are freshwater catfish that sport an armored plate covering and suction-cup type mouths. Feeding on algae, debris from the bottom of a tank and scavenging for other food sources, they need additional sustenance like shrimp, bloodworms, as well as kale or zucchini in order to be truly healthy, not forgetting their beloved algae wafers!

    How big do plecos get?

    Plecos are long-lived fish that grow to about 18 inches, though some species like Hypostomus and Hypopostomus can grow larger – up to 12” and will need an aquarium of at least 75 gallons.

    Otocinclus, on the other hand, are perfectly content in a 10-gallon tank. Learn more about these distinctive fish.

    What are the dietary requirements of small pleco species?

    Small pleco species need a combination of protein-rich foods and algae for their nutrition, ensuring they get the right balance. Such food sources provide variety to these small plecos’ diets while meeting all their dietary requirements.

    Can small pleco species coexist with other fish in a community tank?

    Small plecos is kept with other fish in a community tank, as long as compatible species are chosen. As such, these types of plecos have the ability to coexist peacefully with their aquarium mates.

    Closing Thoughts

    If you’re looking to add a touch of beauty and fascination to your aquatic life, small plecos provide the perfect option. With 15 distinct species available for aquarium enthusiasts of any level, these tiny fish come with unique characteristics and requirements that must be taken into account when creating their ideal tank setup.

    Providing adequate care, environment and nutrition are crucial in order to ensure a thriving community. By understanding each species needs, we can ensure they live happily within our underwater haven!

    From visually appealing specimens through to functional varieties – it’s essential careful planning is involved in setting up optimum home aquariums for these magnificent creatures so that all may benefit from their presence throughout its lifespan. After all, who doesn’t want amazing pleco friends swimming around?

  • Fish That Looks Like A Dragon – Here’s 21

    Fish That Looks Like A Dragon – Here’s 21

    Some fish are colorful, some fish are cute, and some fish look like dragons! In this post, we’ll be introducing 21 weird and wonderful fish, from little dragons just an inch or two long to massive sea monsters as long as a school bus!

    Read along to learn about some great fresh and saltwater dragon fish that you can keep in an aquarium, and some that are better left out in their natural habitat.

    Let’s get into it!

    Key Takeaways

    • Many fish species have sharp teeth, spiny fins, and beard-like growths that make them look just like dragons.
    • Some popular aquarium fish like bettas and guppies have been selectively bred to look more like dragon fish, but their care is much the same as other breeds.
    • Most of the species in this post are available in the aquarium hobby, so you can keep your very own dragon fish at home.
    • Some dragon fish, like the deep sea angler fish and giant oarfish, live in very specialized habitats or grow very large, so you won’t find them at your local fish store

    Fish That Looks Like A Dragon – 21 Species

    Are you ready to meet 21 amazing dragon fish? This list includes freshwater species like the prehistoric bichirs, brackish fish like the eel gobies, and saltwater species like the leafy seadragon.

    Many of these fish can be kept in a home aquarium, but some of them are better left to the experts. So, if you are looking for your very own dragon fish pet, be sure to check out the suggested temperatures, tank sizes, and care levels for each species to help you choose the right species.

    Let’s get started!

    1. Arowana

    • Scientific Name: Osteoglossum and Scleropages spp.
    • Difficulty Level: Advanced
    • Temperament: Aggressive
    • Adult Size: Up to 4 feet
    • Minimum Tank Size: 250 gallons +
    • Diet: Carnivore, eats insects and small fish
    • Origin: Australia, Asia, and South America
    • Temperature: 75 – 82 °F

    Arowanas are amazing freshwater fish with dragon-like scales and a huge mouth. In fact, the endangered Asian Arowana (Scleropages formosus) is even known as the ‘dragon fish’ due to its unique appearance.

    There are several species of these large freshwater fish distributed from South America to Australia, and they can make impressive pets. However, these monster fish need a very large tank and the experience of a dedicated fishkeeper for long-term care.

    2. Axolotl

    Axolotl in Aquarium
    • Scientific Name: Ambystoma mexicanum
    • Difficulty Level: Moderate
    • Temperament: Peaceful
    • Adult Size: Usually 9-12 inches
    • Minimum Tank Size: 20 gallons +
    • Diet: Carnivore, eats invertebrates and small fish
    • Origin: Mexico
    • Temperature: 59 – 73 °F

    The axolotl is a bizarre-looking critter that makes a wonderful aquarium pet. These dragon-like amphibians are not true fish, although they spend their entire lives under the water!

    Axolotls are critically endangered in the wild due to the destruction of their native habitat in Mexico, but fortunately, these interesting animals are still common in captivity. They require cool water conditions and a healthy diet of live or frozen foods like brine shrimp and earthworms.

    3. Bettas

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    Betta Fish are one of the most beautiful varieties of freshwater fish available in the hobby. Easy to care for with plenty of varieties!

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    • Scientific Name: Betta splendens
    • Difficulty Level: Beginner
    • Temperament: Aggressive
    • Adult Size: 2.5 inches
    • Minimum Tank Size: 5 gallons +
    • Diet: Carnivore
    • Origin: Southeast Asia
    • Temperature: 76 – 81°F

    Bettas, or Siamese fighting fish, are popular all over the world for their beauty and feisty personalities. These small fresh water fish make great pets, especially for fishkeepers who don’t have room for a big tank.

    All bettas have a dramatic appearance, with bright colors and large flowing fins, but one breed stands out for its dragon-like appearance. Dragon scale bettas have extra large, metallic scales. Their body color is usually pearly white, and many specimens have fiery red fins.

    Betta fish are easy to care for if you provide a tank of at least 5 gallons, complete with a filter and heater. Avoid overfeeding and test your water regularly to monitor nitrate, nitrite, and ammonia levels to prevent common illnesses like fin rot or ich.

    4. Purple Dragon Guppy

    • Scientific Name: Poecilia reticulata
    • Difficulty Level: Beginner
    • Temperament: Peaceful
    • Adult Size: Up to 2.5 inches
    • Minimum Tank Size: 10 gallons
    • Diet: Omnivore
    • Origin: South America
    • Temperature: 72 – 82 °F

    Guppies are another world-famous fish that are sometimes associated with dragons. The purple dragon guppy is an awesome fancy guppy breed, with eye-catching colors and patterns. Males are smaller and more boldly marked, but even female dragon guppies have great patterning on their tails and dorsal fins.

    They may be a fancy breed, but purple dragon guppies are very easy to care for. These fun tropical fish are very easy to breed in a freshwater aquarium, which is a great hobby for everyone from beginners to advanced aquarists!

    5. Dragon Eye Goldfish

    Black-moor-goldfish in aquarium
    • Scientific Name: Carassius auratus
    • Difficulty Level: Moderate
    • Temperament: Peaceful
    • Adult Size: Up to 8 inches
    • Minimum Tank Size: 20 gallons +
    • Diet: Omnivorous, feeds on invertebrates and plants
    • Origin: China
    • Temperature: 65 – 72 °F

    Dragon eye goldfish are a strange but beautiful goldfish breed with bulging telescope eyes. These fancy goldfish have ancient origins in China, where the breed was first developed over 300 years ago!

    The popular black moor goldfish is a variation of the dragon eye that is popular all over the world, and readily available online or from aquarium stores. These adorable fish should be kept in a large aquarium with cool water and a gentle current. With good care, they can live for over 20 years.

    6. Senegal Bichir

    Senegal Bichir
    • Scientific Name: Polypterus senegalus
    • Difficulty Level: Moderate
    • Temperament: Semi-aggressive
    • Adult Size: Up to 20 inches
    • Minimum Tank Size: 55 gallons +
    • Diet: Carnivore
    • Origin: Africa
    • Temperature: 75 – 82 °F

    The Senegal bichir is a prehistoric-looking fish from Africa, that is often called the dragon fish. These fish look almost like a cross between a dinosaur and an eel, so they make a really cool display animal for a big enough fish tank.

    Despite their strange looks, these fish are not particularly aggressive, although they will swallow any small fish that swims in reach of their large mouths! Large and medium-sized fish with peaceful personalities make the best tank mates for these interesting fish.

    These strange creatures are one of the few fish that can breathe air from the surface and can even walk across land. Check out my guide to 15 fish with legs to learn much more about walking fish!

    7. Dragonface Pipefish

    Dragon-Face-Pipefish
    • Scientific Name: Corythoichthys sp.
    • Difficulty Level: Advanced
    • Temperament: Peaceful
    • Adult Size: 7 inches
    • Minimum Tank Size: 55 gallons
    • Diet: Copepods
    • Origin: Pacific Ocean
    • Temperature: 72 – 78 °F
    • Reef Safe: Yes
    • Available As Tank Bred: No

    The Dragonface pipefish is a unique, eel-like fish from the seahorse family that hangs out on the floor of tropical reefs, waiting for small copepods to snack on. These unique fish have very dragon-like faces, complete with big eyes and a long snout.

    Dragonface pipe fish are popular in the reef aquarium hobby, although they have a specialized diet and are difficult to maintain if you don’t have a steady supply of live copepods to feed them. These tiny crustaceans are available from specialist aquarium stores, but you still need to make sure the other fish don’t eat all the food!

    8. Dragon Goby/ Violet Goby

    Dragon-Goby
    • Scientific Name: Gobioides broussonetii
    • Difficulty Level: Moderate
    • Temperament: Peaceful but territorial with their own kind
    • Adult Size: Can reach over 15 inches
    • Minimum Tank Size: 55 gallons +
    • Diet: Filter-feeder
    • Origin: Southern USA to South and Central America
    • Temperature: 73 – 78 °F
    • Reef Safe: Brackish water fish, not recommended for reef tanks
    • Available As Tank Bred: No

    The dragon goby is a mean-looking fish with upward-facing eyes, a strong jaw, and a row of spiky fins along its back, just like a dragon. Also known as violet gobies, these bottom dwellers are most at home in brackish waters, although they are sometimes found in fresh and saltwater habitats.

    Dragon gobies can be kept in brackish water aquariums, although they prefer a thick layer of soft sand to burrow in and they are not the most exciting pets. They look very similar to Peruvian gobies and are often sold under the same name. Both of these eel gobies may look aggressive, but they actually eat algae and other small food particles, so they are safe to keep with smaller fish.

    9. Dragon Moray Eel

    Dragon-Moray-Eel
    • Scientific Name: Enchelycore pardalis
    • Difficulty Level: Advanced
    • Temperament: Aggressive
    • Adult Size: Up to 3 feet
    • Minimum Tank Size: 150 – 200 gallons
    • Diet: Carnivore, eats other fish and sea creatures
    • Origin: Indo-Pacific Ocean
    • Temperature: 72 – 78 °F
    • Reef Safe: Does not eat corals, but will eat smaller fish
    • Available As Tank Bred: No

    The dragon moray is a colorful tropical reef creature that looks like a dragon. These snake-like fish manage to look beautiful and scary at the same time, making them an awesome choice for a large tropical marine aquarium. However, keep in mind they are difficult to keep. You could opt for a standard moray eel which are more hardy, though aggressive.

    10. Seadragons

    Sea-Dragon
    • Scientific Name: Phycodurus & Phyllopteryx spp.
    • Diet: Carnivore, eats small marine invertebrates
    • Size: 9 – 18 inches
    • Origin: Southern Australia
    • Available in the hobby: Very rare

    Seadragons are unique and delicate saltwater fish from the seahorse family. The leafy seadragon is a true master of camouflage that looks just like a drifting clump of seaweed as it forages near the sea floor. Weedy sea dragons are more colorful creatures with interesting paddle-shaped fins. Despite their different body shapes, each species has an undeniably dragon-like face!

    Sea dragons are usually only kept in large public aquariums because they are rare and require specialized care.

    11. Lionfish

    Lionfish
    • Scientific Name: Pterois spp.
    • Difficulty Level: Moderate
    • Temperament: Semi-aggressive
    • Adult Size: Up to 18 inches
    • Minimum Tank Size: 30 – 125 gallons, depending on the species
    • Diet: Carnivore
    • Origin: Tropical regions of the Atlantic, Pacific, and Indian Oceans
    • Temperature: 72 – 78 °F
    • Reef Safe: Possible, but will consume smaller fish and invertebrates
    • Available As Tank Bred: No

    There are several similar species of lionfish distributed in tropical waters across the globe, each with beard-like growths and huge spiky fins like a dragon’s wings.

    These striking fish are usually red and white in color and are also known as firefish. Lionfish are popular aquarium pets, although they are venomous, so they should never be handled.

    12. Pacific Blackdragon

    • Scientific Name: Idiacanthus antrostomus
    • Diet: Carnivore
    • Size: 2 feet
    • Origin: West Coast of North America
    • Available in the hobby: No

    The Pacific Black Dragon is a deepsea fish that lives several thousand feet below the surface in the cold, dark waters of the Eastern Pacific. These sea monsters have a mouth full of sharp fangs and a beard-like growth under their jaws that gives them a real dragon-like look!

    13. Blue Sea Dragon

    Blue-Sea-Dragon
    • Scientific Name: Glaucus atlanticus
    • Diet: Carnivore that feeds on jellyfish and other venomous sea creatures
    • Size: about 1 inch
    • Origin: Recorded off Africa, Europe, Asia, Australia, North and South America
    • Available in the hobby: No

    The blue sea dragon is a stunning sea animal that lives at the surface of the ocean in many parts of the world. These bright blue creatures are not actually fish but rather a type of carnivorous mollusk.

    Unfortunately, these sea slugs cannot be kept in a home aquarium, but they are sometimes found washed up on beaches. If you do spot a blue sea dragon, don’t be tempted to touch it; these animals give a painful sting!

    14. Dragonets

    Healthy Mandarin Goby
    • Scientific Name: Synchiropus spp.
    • Difficulty Level: Advanced
    • Temperament: Peaceful
    • Adult Size: usually about 3 inches, but some species grow up to 12 inches
    • Minimum Tank Size: 30 gallons
    • Diet: Carnivorous, feeds on copepods and other live invertebrates
    • Origin: Indo-pacific
    • Temperature: 72 – 78 °F
    • Reef Safe: Yes
    • Available As Tank Bred: Yes

    Dragonets are small tropical reef fish with dazzling colors. Several species of these goby-like fish are available in the hobby, although they are best left to experienced and dedicated reef keepers who can provide a steady supply of live copepods.

    15. Giant Oarfish

    • Scientific Name: Regalecus glesne
    • Diet: Carnivorous filter feeder
    • Size: Can exceed 30 feet!
    • Origin: Worldwide in temperate and tropical oceans
    • Available in the hobby: No

    The giant oarfish is the world’s longest fish and a true sea monster of the deep. These serpent-like fish have a spiky red crest and long tassel-like fins below their heads that make them look just like a dragon!

    Despite their fearsome appearance, giant oarfish are not aggressive fish and actually feed on tiny sea creatures that they filter out of the water.

    16. Deep Sea Anglerfish

    Deep Sea Female Angler Fish
    • Scientific Name: Melanocetus johnsonii etc.
    • Diet: Carnivores
    • Size: 1 – 6 inches
    • Origin: Widespread in tropical and temperate oceans
    • Available in the hobby: No

    The humpback anglerfish is a terrifying deep-sea fish that looks like something straight out of a nightmare. These fascinating creatures grow to about 6 inches, so they’re actually just miniature monsters from the deep.

    The deepsea anglerfish has impressive fangs and a huge mouth for capturing small fish and other unfortunate sea creatures. They may not breathe fire, but these deepsea dragon fish do have a glowing lure on the end of a stalk that attracts their prey within striking distance.

    17. Seahorses

    Seahorse Couple
    • Scientific Name: Hippocampus spp.
    • Difficulty Level: Advanced
    • Temperament: Peaceful
    • Adult Size: Up to 13 inches depending on the species
    • Minimum Tank Size: 30 gallons for smaller species
    • Diet: Carnivorous, eats live crustaceans
    • Origin: Widespread in warm, shallow coastal areas
    • Temperature: 72-78 °F
    • Reef Safe: Yes
    • Available As Tank Bred: Yes

    Seahorses may be named after common farm animals, but if you look a little closer, these adorable creatures have a striking resemblance to miniature dragons! These little fish from the Syngnathidae family have spiky, elongated bodies, spiny crests, and long snouts that make them look nothing like a regular fish.

    Seahorses are small and peaceful creatures that inhabit shallow coastal waters around the world where they hunt tiny crustaceans. They are slow swimmers that prefer to grasp onto seaweed and other structures with their prehensile tails than fight against strong sea currents.

    Several captive-bred seahorse species are available in the aquarium hobby, and they make fascinating display animals for dedicated fishkeepers. Avoid wild-caught specimens because they are difficult to keep without live food.

    18. Stoplight Loosejaw

    • Scientific Name: Malacosteus sp.
    • Diet: Carnivore, feeds on marine invertebrates and other fish
    • Size: Reaches 10 inches
    • Origin: Worldwide in deep oceans
    • Available in the hobby: No

    Stoplight loosejaws are deep-sea-dwellers that live thousands of feet below the surface in total darkness. They have evolved the incredible ability to produce green and red light from special organs in their jaw, which they can use to find their prey in the darkness.

    These scary dragon fish have tiny tails, long, sharp teeth, and huge jaws. However, they only live below about 1,500 feet and grow to less than a foot long, so you have nothing to fear next time you visit the beach!

    19. Teugelsi Bichir

    • Scientific Name: Polypterus teugelsi
    • Difficulty Level: Moderate
    • Temperament: Semi-aggressive
    • Adult Size: Up to 25 inches
    • Minimum Tank Size: 150 gallons for full-grown specimens
    • Diet: Carnivorous, feeds on invertebrates and other fish
    • Origin: West Africa
    • Temperature: 77-82 °F

    The Teugelsi bichir is a rare but fascinating freshwater fish that looks like a dragon. These prehistoric forest-dwellers have prominent scales and a spiky dorsal fin just like a mythical fire-breathing monster!

    The species is occasionally seen for sale in the aquarium trade and makes an interesting pet for fishkeepers with large tanks. Like other bichirs, these fish are carnivorous and will snack on other fish at night when they come out to feed.

    20. Mottled Bichir

    • Scientific Name: Polypterus weeksii
    • Difficulty Level: Moderate
    • Temperament: Semi-aggressive
    • Adult Size: Grows to about 23 inches
    • Minimum Tank Size: 150 gallons for a full-grown specimen
    • Diet: Carnivore
    • Origin: Central Africa
    • Temperature: 76 – 82 °F

    Here’s another freshwater dragon fish for all the bichir lovers out there. The mottled bichir is a fascinating predatory species from Africa with an intimidating scaly appearance.

    These rare nocturnal fish need a high-protein diet to stay healthy, so they are not recommended for a community aquarium with smaller tank mates! They are very hardy fish that can breathe air and even travel over land in moist conditions.

    21. Scorpionfish

    • Scientific Name: Scorpaenidae family
    • Difficulty Level: Moderate
    • Temperament: Semi-aggressive
    • Adult Size: 2 inches to 3 feet
    • Minimum Tank Size: 30 gallons + depending on species
    • Diet: Carnivorous, feeds on other fish and small sea creatures
    • Origin: Widespread in marine and brackish habitats
    • Temperature: Species dependent
    • Reef Safe: With caution
    • Available As Tank Bred: No

    Scorpionfish are a large group of bizarre saltwater fish with dragon-like features and a venomous spine. These carnivorous fish often have amazing camouflage, which they rely on to ambush their prey. Many species are available for marine aquariums, but be warned, some of these fish are very dangerous!

    22. Koi

    Koi
    • Scientific Name: Cyprinus carpio
    • Difficulty Level: Moderate
    • Temperament: Peaceful
    • Adult Size: Over 2 feet
    • Minimum Tank Size: 1500 gallons
    • Diet: Omnivorous
    • Origin: Indonesia
    • Temperature: 59 – 77 °F

    The famous Koi fish is seen as a noble creature in Japan. There is a legend that states that if a Koi climbed the waterfall on the Yellow River that it would turn into a Koi Dragon.

    The most similar looking Koi to be found in the hobby that looks like a dragon would be a butterfly koi. Though not considered a true koi by many purist, their fins give them that flying look.

    Final Thoughts

    Dragons do exist! Maybe not the flying, firebreathing kind you’ve seen in the movies, but there’s plenty of weird and wonderful dragon fish swimming around out there. Some of these amazing animals even thrive in fish tanks, so who knows, you could even keep a dragon in your own room.

    Which fish do you think most resembles a real-life dragon? Share your top pick in the comments below!

  • Hermit Crab Care: My 7-Step Guide After Years of Keeping Them in Saltwater Setups

    Hermit Crab Care: My 7-Step Guide After Years of Keeping Them in Saltwater Setups

    Hermit crabs need humidity, heat, salt water, fresh water, and shell options. Most pet store setups provide none of these things properly.

    Everything sold in a pet store hermit crab kit is wrong. Start from scratch.

    If your crab has no way to climb out of the water, your setup is wrong.

    The Hermit Crab needs a paludarium-style setup with both land and water access. That is a different kind of maintenance commitment than a standard aquarium.

    Crabs are escape artists with opinions. If your lid has a gap, they will find it.

    What It Is Actually Like Living With Hermit Crab

    The Hermit Crab is more active and aware of its surroundings than most people expect. In a properly set up tank, it shows behaviors that generic care guides never mention.

    Feeding becomes a routine both you and the fish look forward to. The Hermit Crab learns your schedule and responds to your presence near the tank within the first few weeks.

    Maintenance is consistent, not difficult. Regular water changes and parameter monitoring become second nature. The fish rewards consistent care with better color, more activity, and visible health.

    Over time, you notice personality traits unique to your individual fish. Some are bold explorers. Others are cautious observers. That individual personality is what turns casual fishkeeping into a genuine hobby.

    Key Takeaways

    • A spacious, natural habitat with a deep sand and coconut fiber substrate is critical for hermit crabs to dig, molt, and feel at home.
    • Hermit crabs need a carefully controlled environment. Maintain temps between 72-82°F and relative humidity between 60-80% for their health and comfort.
    • Hermit crabs thrive socially and need spare shells and companions to swap shells with, but avoid painted shells due to toxicity.
    • The Reality of Keeping Hermit Crab
    • What It Is Actually Like Living With Hermit Crab

    The Reality of Keeping Hermit Crab

    Most crabs are semi-terrestrial. A fully submerged tank is a death sentence for most freshwater and brackish crabs. They need land access, humidity, and the ability to climb above the waterline. A paludarium-style setup is the only correct approach for most species.

    Escape prevention is a daily concern. Crabs climb everything. Heater cords, filter intakes, airline tubing, tank decorations. If there is a path to the rim, they will find it. A tight-fitting lid with no gaps is mandatory.

    Aggression is always present. Crabs are territorial and will fight other crabs, eat small fish, and destroy plants. Tankmate selection is limited and must be carefully planned.

    Biggest Mistake New Owners Make

    Keeping crabs in a fully aquatic setup without land access. Most freshwater crabs need to leave the water regularly. Without a dry area, they drown. Yes, crabs can drown.

    Expert Take

    Build the land area first, then add the water section. If you start with water and try to add land later, you will redesign the entire setup. Trust me on this.

    Before You Get Started

    • A glass tank – at least 10 gallons in size
    • Screen lid with clips or an aquarium lid
    • Heater source – under tank heater or a heat lamp
    • Water declorinator/ water conditioner
    • Substrate
    • 2 water bowls for salt and freshwater that is deep enough for them to submerge into
    • Thermometer and Hygrometer
    • Extra shells – same size and larger than what the crab already has
    • Food bowl
    • Hand Mister – or electric fogger
    • Calcium source – Cuttle, crushed coral, or egg shells

    Hermit Crab Care In 7 Simple Steps

    Aquarium Example

    Hermit crabs, sometimes known as land crabs, are intriguing creatures found in tropical habitats. To make sure they live comfortably and healthily at home, they need the right habitat with enough food for them to munch on plus empty shells that hermits naturally need. Setting up an ideal environment suitable for these little crustaceans before bringing them into our homes is essential.

    Step 1 – The Tank

    To create a great living space properly equipped for your tiny companions, here’s what you should know: prepare spacious surroundings where the crabs can move around freely like their natural setting, choose bedding options accordingly, never forget to provide sufficient amounts of food such as fruits or vegetables along with several available empty shells. The ideal tank for a hermit crab will be 10 gallons for small crabs, but tanks as large as 75 gallons are preferred for fully grown hermits and for community of them.

    🏆 Mark’s Take: Of all 7 steps, the tank is the one most beginners get wrong. Specifically the size. I’ve seen hermit crabs kept in enclosures way too small for their needs. A 10-gallon is the bare minimum for a small group, and bigger is always better. They need space to explore, forage, and molt safely without being disturbed. Skimping on the tank size is the fastest way to stress them out and shorten their lifespan.

    Your tank must be secured with a lid or a mesh cover. All hermit crabs are great climbers and are strong for their size. The lid must be secured as hermits have been known to pop up the lids on their own. A heat resistant cover is preferred either use a glass cover used in aquariums or a cover designed for reptiles.

    Step 2 – Selecting The Right Substrate

    Hermit crabs need an ideal habitat that contains a mix of sand and coconut fiber (also known as eco earth) for their bed, playground and dining area. A 5:1 mix of sand and coconut fiber is a popular mix among keepers.

    This substrate should be 6-12 inches deep at least. Three times higher than its largest crab occupant to permit burrowing comfortably when needed. Introducing drainage components is essential in keeping air circulation high so these hermits can breathe properly while helping retain moisture levels.

    Step 3 – Temperature Control

    Under Tank Heater
    Under Tank Heater

    This nifty tank works great with reptiles and hermit crab tanks

    Buy On Amazon

    To keep hermit crabs warm and happy, an under tank heater such as ultratherm heat pads is ideal. By maintaining a consistent temperature of 78°F or above with the help of a heater, these low wattage density elements provide just enough warmth to their habitat without getting too hot. Proper temperatures between 78-85°F are what you should shoot for.

    Note that some species can tolerate lower temperatures. Purple pinchers are a good example as they can tolerate lower temperatures down to 75 degrees Fahrenheit.

    ⚠️ Temperature Is the Silent Killer: In my experience, temperature issues are the most common reason hermit crabs die without an obvious cause. People set up the enclosure and forget that these animals need consistently warm conditions. Drop below 72°F for any extended period and you’ll start losing them. An under-tank heater is not optional. Don’t rely on room temperature alone, especially in cooler months.

    Step 4 – Understand Your Humidity Requirements

    Maintaining a correct humidity level is essential for hermit crabs’ survival. This should be somewhere between 60-80% as this environment encourages them to thrive. To check the moisture levels, you could use an electronic hygrometer. If the humidity drops too low, it can lead to the suffocation of these animals.

    Step 5 – Feeding And Nutrition

    Feeding-Hermit-Crabs

    Hermit crabs enjoy a range of foods from insects to plant matter. They are omnivores and scavengers in nature. Here are a few hermit crab food selections you can offer on the menu:

    • Fruits – mange, apple, bananas, grapes
    • Protein Sources – Insects (mealworms), seafood, beef (beef lung/beef tripe
    • Vegetables – Oak/Maple leaves, carrots, squash, tomatoes

    Step 6 – Water Essentials

    Hermit crabs need special water dishes filled with an ocean salt mix to ensure the biggest crab can submerge. For the saltwater bowl, this must be prepared with a marine salt mix that should be of similar saliny than you would have for a saltwater tank (1.025 salinity or 35 PPT).

    These deep bowls also create perfect little ‘crab digs’ by giving them access to moisture while keeping their environment humidified. All water must be treated for chlorine using a declorinator like Seachem prime

    Step 7 – Provide Proper Shells

    You will need 3 to 5 shells per crab. They must be slightly larger than what the crab is currently wearing. Look for something natural. You can purchase shells at craft stores or even online. The ideal shell is a circular or oval shaped opening and should be sterilized before adding to their habitant. As long as shells are natural, you should be good to go.

    What To Avoid Doing

    Want a fully aquatic invertebrate? Get shrimp. Want a semi-terrestrial paludarium project? Get crabs. The setup is completely different.

    • Don’t offer painted or glazed shells – these are dangerous and toxic to your crab!
    • Do not feed any plant matter that has been treated with pesticides. Hermits are very sensitive to treated plants.
    • Never add tap water directly into your crabs bowl
    • Never use non-marine grade salt when making your saltwater bowls
    • Avoid anything chrome in the tank. Nickel, arsenci, and cadmium are also highly toxic to them. Research what your decor is made of to avoid any issues. Natural is your friend!
    • Avoid iron and other rust prone items – humidity will make metals prone to rust

    Species Overview

    Scientific NameCoenobita clypeatus (Caribbean hermit crab) and Coenobita compressus (Ecuadorian hermit crab)
    Common NamesHermit Crab, Land Hermit Crabs
    FamilyCoenobitidae
    OriginCaribbean
    Skill LevelModerate
    Average Life Span10 years
    Average Adult Size2-6 inches
    DietOmnivorne
    Minimum Tank Size10 gallon tank
    Humidity Range70% to 85%
    Temperature Range75 – 85 degrees F

    Social Dynamics

    Group-Hermit-Crabs

    Hermit crabs, despite the moniker they’ve been given, are quite social creatures and enjoy being part of a group. As each crab needs around five to ten spare shells for growth over their lifespan as well as exchanging them on occasion. It’s essential that small hermit crabs have access to hiding places for comfort when in groups.

    One great thing about hermits is that their size doesn’t matter. Unlike fish where you have to worry about little fish getting eaten by larger ones, your hermits will not care. Aggression will occur if you do not have enough shells around for everyone. Other than that concern, hermit crabs love to be around each other.

    However, hermits should only be housed with other hermits. Do not mix them with reptiles or amphibians. Quarantining before release hermit crabs to their new environment is recommended. Do so for a month for each addition to prevent mites (more on this later).

    Health and Safety Practices

    Taking care of your pet hermit crab is not difficult. While molting, it’s best for them to have some space away from the other crabs so they can do it safely and without interruption.

    You will deal with issues humidity related such as mold. Remove mold as soon as you see it and allow the affected decoration to completely dry before adding them back.

    Pests are your main issue with hermit crabs, not so much disease. Heat and humidity will attract pests like mites, isopods, and fruit flies. Mites is prevented by quarantining new additions. Fruit flies is eliminated with the use of a non-toxic trap.

    Maintenance And Upkeep of the Habitat

    Hermits are amazingly simple to keep. Your main daily concerns aside from feeding will be humidity and heat. Here are a few things that you should do routinely.

    DailyWeeklyMonthly
    Check temperatureClean out water bowlsChange water (for cycled water)
    Check humidityClean out decor
    Remove uneaten food

    Closing Thoughts

    Caring for hermit crabs may seem intimidating, but it is incredibly rewarding and enriching when done right. A successful experience is determined by creating an adequate home environment to suit the crustaceans’ needs as well as comprehending their social behaviors, nutrition requirements and dietary habits. It’s more than just meeting these fundamentals though. In order to gain a deep understanding of your hermit crab’s individual personality quirks, you must learn about them through observation. Embark on this unique journey with the helpful guidance needed to become true pet parents!

    Frequently Asked Questions

    Are hermit crabs easy to take care of?

    Hermit crabs are relatively easy to look after, since they’ve adapted to survive on land and can live for up to 15 years when cared for properly. These creatures appreciate company, so owning several of them is recommended.

    Do hermit crabs recognize their owner?

    Hermit crabs have the remarkable ability to learn and recognize their owners’ voices, and even come when called by name. It’s quite astonishing how these particular kinds of crab can form such a strong bond with human companions.

    How many hermit crabs should be kept together?

    Hermit crabs should be housed together in pairs or small groups with no fewer than 10 gallons of space for each two hermits, so they can prosper.

    How do you take care of a hermit crab for beginners?

    If you’re a beginner looking to keep hermit crabs, make sure that their environment has the correct temperature (75-85 degrees) using either heaters or lamps and also maintain humidity at 70-85% by spraying dechlorinated water in its tank. Light needs to be present for 8-12 hours each day with fluorescent/LED bulbs but avoid UVB lighting as it is too strong.

    Can hermit crabs eat lettuce?

    Hermit crabs can consume romaine lettuce as a nutritional supplement and enjoyable treat alongside other fruits and vegetables. These little crustaceans require essential vitamins that the nutrient-rich plant matter found in these foods offer them, making it an integral part of their diet.

    References

  • Bala Shark Tank Mates: My 15 Picks After Years in the Aquarium Trade

    Bala Shark Tank Mates: My 15 Picks After Years in the Aquarium Trade

    Bala Shark tank mates need to handle the same large tank, tolerate a fast schooling fish, and not be small enough to eat.

    Bala shark tank mates need to be large enough not to become food. That eliminates most community fish.

    While these fish are not true sharks, they grow to some impressive sizes. It wasn’t until lately that hobbyists discovered the true care requirements that bala sharks have in the aquarium setting. If you’re able to properly house one of these monster freshwater fish, then you’ll need to consider some of the best tank mates.

    Key Takeaways

    • Bala sharks are large freshwater fish that can live with a variety of other fish.
    • These unique fish are named after their iridescent silver torpedo-shaped bodies with jet-black fins.
    • The best bala shark tank mates are ones that are moderately sized and active. Examples include Angelfish, Severums, and Tiger barbs.
    • Sadly, natural bala shark populations are decreasing, and they are rarely bred in the aquarium hobby.

    The 15 Best Bala Shark Tank Mates

    Such a large fish needs special consideration when choosing tank mates. Bala shark tank mates should be big, active, and able to withstand semi-aggressive and sometimes predatory behavior, especially during feeding times. All recommended minimum tank sizes have been adjusted to accommodate a school of bala sharks and other tank mates.

    1. Other Bala Sharks

    Bala-Shark
    • Scientific Name: Balantiocheilus melanopterus
    • Adult Size: 1-2 feet
    • pH: 6.5-7.5
    • Water Temperature: 72-82° F
    • Minimum Tank Size: 125 gallons

    The best tank mates for bala sharks are other bala sharks! You read that right, these fish do best when they’re kept with their own species.

    ⚠️ The Biggest Mistake With Bala Sharks: Most people don’t realize what they’re committing to when they buy juveniles. Bala Sharks are semi-aggressive, need a group of at least 5 to feel secure and behave properly, and grow large enough that adults need a 150+ gallon tank. I only kept them at the store for exactly this reason. They’re not practical for most home setups. If you can’t commit to both the school size and the tank space, this is the wrong fish.

    While widely available, bala sharks actually come from pretty unique ecosystems where other freshwater aquarium fish aren’t regularly collected. Instead, other monster fish, like the iridescent shark (Pangasianodon hypophthalmus), are collected and kept in extremely large systems or public aquariums. This can make it difficult to pair bala sharks with other endemic species.

    Bala sharks also enjoy the company of each other. They is shy and skittish when the only shark in the tank, and being in the company of others increases their confidence. Keep in mind that an overly bold bala shark can become semi-aggressive and might even try to eat smaller fish.

    2. Gouramis

    Gold-Gourami
    • Scientific Name: Helostomatidae family/Osphronemidae family
    • Adult Size: 6-20 inches
    • pH: 6.5-7.5
    • Water Temperature: 72-82° F
    • Minimum Tank Size: 125-250 gallons

    Dwarf gouramis (Trichogaster lalius) are some of the most popular fish to keep in community tanks. We’re going to need something a little bigger than a dwarf gourami, though.

    There are many species of gourami, some of which grow to extreme sizes, making them a great bala shark tank mate! Two of these species are kissing gouramis and giant gouramis.

    Kissing gouramis (Helostoma temminckii) are not recommended for community fish tanks but make suitable tank mates for bala sharks. Kissing gouramis is somewhat territorial, so it’s best to keep your bala sharks in decently sized schools and provide plenty of hiding spots.

    The giant gourami (Osphronemus goramy) is a huge fish that requires at least 250 gallons. While these fish are often slow and sluggish and unlikely to chase after more active swimmers, like the bala shark, they may defend their territory if needed. Because of this, it’s best to keep the bala sharks in larger numbers and with plenty of rocks and decorations.

    3. Angelfish

    <a href=Altum Angelfish in Planted Tank” class=”wp-image-551860″/>
    • Scientific Name: Pterophyllum spp.
    • Adult Size: 4-6 inches
    • pH: 6.0-7.5
    • Water Temperature: 75-82° F
    • Minimum Tank Size: 125 gallons

    Angelfish are a very popular option as bala shark tank mates. Though bala sharks are active swimmers and angelfish are not, these two species seem to balance each other out. As a result, the angelfish and bala sharks will start to float and swim together in the middle of the water column.

    There are many species of angelfish available. The common Pterophyllum scalare can reach a large enough size to complement a bala’s length. These fish come in nearly every color combination, which can accent the shine of the sharks. If you’re looking for a real fishkeeping challenge, then you may opt for the expensive and difficult-to-keep altum angel (Pterophyllum altum), which also grow to larger sizes.

    Angelfish do best when kept in small groups of the same species. If planning to keep larger species of angel, then it’s recommended to have at least a 150 gallon aquarium.

    4. Clown Loach

    Clown-Loach
    • Scientific Name: Chromobotia macracantha
    • Adult Size: 1 foot
    • pH: 6.0-7.5
    • Water Temperature: 72-82° F
    • Minimum Tank Size: 125 gallons

    One of the most common tank mates for bala sharks is the clown loach. For decades, these fish were kept in overly small community tanks where they couldn’t thrive. While care requirement understanding has changed for these two different species, it’s still agreed that they make a great tank mate pairing.

    Clown loaches have very similar temperaments to bala sharks and can grow to relatively the same size. In addition, clown loaches are schooling fish which will help shyer bala sharks come out to the front of the tank.

    While clown loaches might seem like smaller fish, they can still grow to be a foot in length. They originate from fast-flowing rivers and need good water circulation, but not so much that your bala shark school gets pushed around the aquarium.

    5. Blood Parrot Cichlid

    Blood Parrots in Aquarium
    • Scientific Name: Cichlidae hybrid
    • Adult Size: 6-10 inches
    • pH: 6.5-7.5
    • Water Temperature: 75-82° F
    • Minimum Tank Size: 125 gallons

    Blood parrots are a hybrid type of cichlid. This means that they will display aggressive behavior towards overly active or small fish; an especially large blood parrot cichlid may also try to eat smaller fish. Because of this, it’s recommended to only keep appropriately sized bala sharks with these fish.

    Otherwise, a blood parrot cichlid will bring a ton of color to a bala shark tank. They are not overly active swimmers, which can help calm shy and skittish bala sharks.

    It should be also noted that, because they’re hybrids, blood parrot size can greatly vary. It’s better to go with a larger tank than necessary, not only to allow for potential size and bioload but also to safely keep multiple parrots with multiple sharks.

    6. Severum

    Severum Cichlid Fish
    • Scientific Name: Heros severus
    • Adult Size: 6-10 inches
    • pH: 6.0-7.5
    • Water Temperature: 72-82° F
    • Minimum Tank Size: 125 gallons

    A true species of cichlid, severums are one of the most popular fish to keep in the freshwater aquarium and make good tank mates for bala sharks. Severums are a relatively peaceful species of South American cichlid. They are much more forgiving of other fish than most cichlids.

    However, multiple severums do not do well when placed together in the same tank, especially if the aquarium is small. In certain settings, breeding pairs of severums is safely kept. Bala sharks are probably too active for a pair of severums aggressively defending their nest and territory, though. For this reason, we only recommend keeping one severum alongside bala sharks.

    7. Geophagus Cichlids

    Geophagus
    • Scientific Name: Geophagus spp.
    • Adult Size: 6-8 inches
    • pH: 5.5-7.5
    • Water Temperature: 72-82° F
    • Minimum Tank Size: 125 gallons

    Another South American cichlid, geophagus are natural-looking fish that can vary in appearance. These fish are mostly a mixture of silvers, blues, and greens, with males being more colorful and ornate than females.

    Along with appearance, aggression can vary with geophagus species. It is believed that Geophagus altifrons is one of the least aggressive species available. These fish enjoy their own species and being in schools of at least 6 or more, but some hobbyists have kept multiple species together in the same tank as long as space allows.

    8. Tinfoil Barbs

    Tinfoil Barb
    • Scientific Name: Barbonymus schwanefeldii
    • Adult Size: 1-1.5 feet
    • pH: 6.5-7.0
    • Water Temperature: 72-82° F
    • Minimum Tank Size: 150 gallons

    Tinfoil barbs are very large barbs from Southeast Asia. These fish are not commonly seen available in the normal freshwater fish hobby but are a favorite among monster fishkeepers. These fish grow to extreme sizes as a barb species, and feature a simple silver color with black and red angular fins.

    Tinfoil barbs are schooling fish and need to be kept in groups of at least 6 or more. Because bala sharks are also schoolers and share a similar demeanor, an especially large tank is needed. If keeping only these two species, then a 150 gallon is needed. Keeping different species would require a several hundred gallon system.

    9. Tiger Barbs

    Tiger-Barb
    • Scientific Name: Puntigrus tetrazona
    • Adult Size: 2-4 inches
    • pH: 6.0-7.0
    • Water Temperature: 72-82° F
    • Minimum Tank Size: 125 gallons

    In addition to the clown loach and bala shark pairing, the tiger barb and bala shark aquarium setup was inescapable for years. Tiger barbs are a very popular community tank shoaling fish and do best when kept in groups of at least 6 or more. Since bala sharks need a large aquarium, hobbyists can easily fit dozens of barbs in a 125 gallon system while still allowing for other species as well.

    It should be noted that tiger barbs is especially nippy and might try to chase and harass slower-moving fish. For the most part, bala sharks should be able to outpower and navigate around, especially feisty barbs, but additional protection through plants and structures will help keep aggression down.

    🏆 My Top Pick: Tiger Barbs are my go-to recommendation for a Bala Shark tank. They’re large enough not to be eaten, active enough to match the Bala’s energy, and this pairing has been a staple in the hobby for decades for good reason. Keep your Tiger Barbs in a school of 6+ and their nippy behavior stays in check. A big group keeps them focused on each other rather than harassing tank mates.

    10. Boesemani Rainbowfish

    Boesemani-Fish
    • Scientific Name: Melanotaenia boesemani
    • Adult Size: 3-5 inches
    • pH: 7.0-8.0
    • Water Temperature: 72-82° F
    • Minimum Tank Size: 125 gallons

    Bosemani rainbowfish are very different in comparison to bala sharks by way of appearance, natural habitat, and behavior, but this unusual pairing seems to work. In general, bosemani are a larger species of tropical fish that fills an aquarium with bright colors and movement. This is in contrast to slow but steady iridescent bala sharks.

    There is one consideration that needs to be taken when keeping bosemani rainbowfish as tank mates, though, and that is that they enjoy slightly harder and more basic water parameters. As long as both the bala sharks and bosemani rainbows have been kept in standard aquarium water conditions, then there should be no need for acclimation. You can also check out Emerald Rainbowfish as another option

    11. Plecos

    Blue-Eye-Pleco
    • Scientific Name: Hypostomus plecostomus
    • Adult Size: 1-2 feet
    • pH: 6.5-7.5
    • Water Temperature: 75-82° F
    • Minimum Tank Size: 150 gallons

    We don’t recommend plecos as any tank mate option, but they do well in a large bala shark setup. Like bala sharks, common plecos have been long misunderstood fish regarding their behaviors and potential adult size. Plecos are huge fish that create a lot of waste! They can also easily injure and kill smaller fish by trying to suck the slime coat off their body.

    For this reason, only one common pleco is recommended for a 150 gallon aquarium setup. While particularly aggressive plecos may still try to suck on the sides of bala sharks, balas will be faster and better protected in a school setting. Mid-sized plecos can also be considered.

    12. Silver Dollars

    Common Silver Dollar
    • Scientific Name: Metynnis argenteus
    • Adult Size: 6 inches
    • pH: 5.0-7.0
    • Water Temperature: 72-82° F
    • Minimum Tank Size: 125 gallons

    Though many species are regarded as a silver dollar, Metynnis argenteus is one of the most commonly available. Silver dollars are a comparable fish to the aforementioned tinfoil barb, though much, much smaller, and more manageable. These fish are pearlescent silver with some individuals showing hints of red on their anal fin.

    Silver dollars are active schooling fish that will complement the same swimming patterns as bala sharks. Though only 6 inches wide, they can start to take up a decent amount of space as they grow vertically.

    It should be noted that silver dollars are regularly kept in more acidic water parameters, so some acclimation is necessary to keep them with balas.

    13. Dennison Barbs

    Dennison Barb
    • Scientific Name: Sahyadria denisonii
    • Adult Size: 4-6 inches
    • pH: 6.5-8.0
    • Water Temperature: 60-80° F
    • Minimum Tank Size: 125 gallons

    Dennison barbs are very popular tank mates for a variety of large fish species. They are colorful, active, and get along with most other fish. Unfortunately, these fish originate from very particular ecosystems throughout India, and their numbers are dwindling. All efforts should be made to replicate their natural settings in the home aquarium, including a high rate of water flow.

    Otherwise, Dennison barbs thrive in groups of at least 6 or more. They are moderately active swimmers and can become slightly aggressive during feeding times. While they should be completely compatible with bala sharks, some care should be taken to ensure your sharks get enough to eat.

    14. Pictus Catfish

    Pictus-Catfish
    • Scientific Name: Pimelodus pictus
    • Adult Size: 3-6 inches
    • pH: 6.5-7.5
    • Water Temperature: 75-82° F
    • Minimum Tank Size: 125 gallons

    If you’re not looking for a bottom-dwelling fish as big as the common pleco, then the pictus catfish might offer something smaller and more eye-catching. These fish are silvery-white with assorted black spots across their bodies and fins. They also feature three sets of barbels.

    The pictus catfish is one of the most ideal tank mates for a bala shark aquarium as they are largely nocturnal, swim at a different water column level, and complement the natural colors of the sharks. They also stay much smaller than other similar catfish, though they will need to be kept in small groups of at least 3 or more.

    15. Giant Danios

    <a href=Giant Danio in Aquarium” class=”wp-image-557080″/>
    • Scientific Name: Devario aequipinnatus
    • Adult Size: 3-5 inches
    • pH: 6.0-7.0
    • Water Temperature: 72-82° F
    • Minimum Tank Size: 150 gallons

    The giant danio is becoming an ever-increasing popular fish in the aquarium hobby. They should not be confused with the readily available zebra danio (Danio rerio) as these fish require tropical temperatures and a larger tank.

    That being said, giant danios are still very active schooling fish that can easily overwhelm smaller fish. Unlike zebra danios, they swim toward the middle of the water column, where bala sharks also prefer. To make this pairing work, the danios should be overall smaller and in a smaller group size than the sharks.

    Aquatic Animals To Avoid

    Though bala sharks is afraid of their own shadow, there are a few fish and invertebrates they won’t be compatible with. Even though bala sharks are relatively hardy fish, they do have some special considerations.

    1. Shrimp

    Freshwater Shrimp
    Freshwater Shrimp

    Freshwater aquarium shrimp are a great addition to small tanks and aquascapes. Peaceful, full of personality, and colorful. Many varieties are available.

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    Shrimp are great cleanup crew members and can bring color and life to the bottom of the aquarium. Sadly, they are not good tank mates for bala sharks and will be easily eaten instead.

    2. Small Snails

    Mystery-Snail

    For the most part, bala sharks won’t eat mature snails. However, they is tempted to eat a snail that is smaller than their mouth. For this reason, only large, full-grown snails should be kept as tank mates for bala sharks.

    3. Small Fish

    School of Rasboras

    For the same reasons, bala sharks should not be kept with fish that are smaller than their mouth. While bala sharks are not overtly aggressive fish, they will not hesitate to try to eat anything that they can.

    4. Aggressive fish

    Again, bala sharks are not overly aggressive and they will be harassed and outcompeted by a larger, more aggressive, and more active tank mate. These fish are naturally shy and will not defend themselves if they are attacked by another fish.

    Their Care Requirements

    While we talked about possible tank mates, we also need to go over the intense requirements of bala sharks. For a long time, bala sharks have been kept in relatively small aquariums due to their unassuming juvenile size and striking appearance. The truth is that bala sharks can grow to be 1-2 feet long!

    The bala shark (Balantiocheilus melanopterus) is a slender freshwater fish with pointed fins that resemble those of a marine shark. They have been documented in the Mekong River basin, as well as throughout the Malay Peninsula, Sumatra, and Borneo. Unfortunately, populations are dwindling in their natural habitat.

    As of yet, bala sharks have not been, or are very rarely, bred in the aquarium setting. This means that wild-caught individuals need to be preserved in aquariums that fit their needs. Keep in mind that bala sharks are schooling fish and do best in groups of at least 3 or more. Because of this and their mature size, bala sharks require at least a 125 gallon aquarium, with a longer footprint being better than a tall one.

    Want to learn more about their requirements in detail. Check out our care guide here.

    FAQs

    Can bala sharks be kept alone?

    Bala sharks are big freshwater aquarium fish and it is tempting to keep one bala shark in a 29 gallon tank instead of an entire school in a 125 gallon tank. These aquarium fish cannot and should not be kept alone.

    These fish benefit from being in a group with others as they are naturally shy and reclusive. Also, never try to keep a fish in a tank that is too small with plans of eventually upgrading!

    Are they aggressive?

    Bala sharks were wrongly labeled as aggressive when they entered the aquarium hobby. These are relatively peaceful fish that might only mistakingly show signs of aggression if kept with small fish and invertebrates. Otherwise, they are often outcompeted by other species.

    What’s the best temperature for them?

    Bala sharks are tropical fish that need a constant water temperature between 72 to 82° F.

    Final Thoughts

    The art of keeping bala sharks has long been misunderstood. These are relatively peaceful fish that grow to large sizes and therefore, need a large aquarium setup. That being said, they can comfortably be kept with a variety of other freshwater fish as long as they don’t fit inside your shark’s mouth and aren’t overly active.