8 Aquarium Catfish For Community Tanks




Aquarium Catfish

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There are many different types of catfish available in the aquarium trade, some of which work well in the home community aquarium and some of which definitely don’t.

There’s a catfish for all tank sizes and community types, so keep reading for a list of 8 catfish ranging from small to medium sized and from calm to absolutely hyperactive!

8 fascinating catfish for your aquarium #pets #aquariums
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Cory catfish (Corydoras)

Cory Catfish

Probably the most well-known and popular type of aquarium catfish is the genus Corydoras, collectively known as Cory catfish or Cories. There are many different Corydoras species, ranging from the tiny pygmy Cory which is suitable for tanks of 40cm/15.5″ and up to larger species like the bronze Cory, which needs 35.5″/90cm or more.

All Corydoras are schooling fish and should be kept in groups of at least five (preferably much more) to prevent stress and shyness. They are bottom feeders that love to sift around the bottom of their tank using their sensitive barbels. This means a sand substrate or small rounded gravel is recommended if you want to see them show their natural foraging behavior and prevent barbel damage. Soft, relatively acidic water is preferred. When it comes to tankmates try to choose peaceful species that prefer similar water values. This list contains some options.

A full pygmy Cory (Corydoras pygmaeus, hastatus and habrosus) caresheet can be found here while a full bronze Cory (Corydoras aeneus) caresheet can be found here.

And last but not least… don’t forget to have a look at the full article about Corydoras catfish including general info and a list of five fascinating members of the Corydoras genus here.

Upside-down catfish (Synodontis nigriventris)

Upside-Down Catfish

To the surprise of many non-fishkeepers and beginners in the hobby, the upside-down catfish (pictured at the top of this article) does exactly what its name suggests. It swims upside-down!

One of the smaller and more peaceful members of its genus, the upside down-catfish is suitable for aquariums of at least 31.5″/80cm and does well in most moderately peaceful communities. This catfish is a popular choice for Central-/West-African biotope setups, so small cichlids from similar areas (like Kribensis cichlids) could make suitable tankmates.

Keep groups of at least 4 upside-down catfish and be sure to provide plenty of hiding places to prevent stress. Tall plants like Amazon sword should work well for this. Feed a combination of frozen, live and pellet foods.

Twig catfish (Farlowella acus, Farlowella vittata)

When it comes to odd looks, twig catfish from the Farlowella genus definitely take the cake. This species has taken camouflage to the next level by evolving to resemble a branch or twig. Definitely quite effective: in an aquarium with plenty of leaf litter you might not see a Farlowella until it moves.

Aquarists appreciate Farlowellas not just for their fascinating looks, but also for their peaceful behavior and big appetite for algae. In fact, the species is on the list of best algae eaters and the list of perfect peaceful community fish!

If you’d like to keep a Farlowella in your own aquarium, remember that these catfish don’t respond well to bad water quality. They grow to an adult size of around 6″ or 15cm, which means you’ll need an aquarium of at least around 35.5″ or 90cm to house a single specimen.

To keep your Farlowella happy and healthy, consider cultivating some algae in a separate tank. Additionally, feed plenty of other greens to prevent the fish from going hungry. Algae tabs make a good staple and you can use greens like zucchini or kale for some extra variation.

Otocinclus catfish

Otocinclus Catfish

An all-time algae-eating favorite and actually on the list of best algae eaters, Otocinclus catfish are one of the tinier catfish species available in the aquarium trade and can be kept in tanks of 15.5″/40cm and up. Their small size doesn’t make them easy or suitable for beginners, though. They’re actually a bit controversial due to their fragility and high death rate.

If you want to keep Otocinclus in your aquarium make sure it’s fully cycled and, most importantly, stable. Provide plenty of hiding places in the form of plants, rocks and wood and get a group of at least five fish (preferably more). Tankmate-wise, go for only the calmest species. Small schooling fish, shrimp and other peaceful catfish like Corydoras can work well.

You can find a full Otocinclus caresheet containing everything you need to know about this tiny catfish here.

Glass catfish (Kryptopterus vitreolus)

Glass Catfish

Glass catfish are another strange looking catfish species. They are translucent aside from a little bit of pigmentation on the head, which means the inner organs are visible. Naturally found in blackwater habitats in Thailand they prefer a heavily planted setup with stained water, which can be achieved by adding Indian almond leaves.

Keep glass catfish in schools of at least five in an aquarium of at least around 40″/100cm, because although they are one of the smaller members of their genus they can still grow to a size of around 2.5 inch (~6.5cm). Due to their relatively inactive and peaceful nature, it’s not a good idea to combine them with very active or aggressive tankmates.

Note: Kryptopterus vitreolus is often mislabeled as Kryptopteris bicirrhis or minor. However, these are much rarer in the aquarium trade. Kryptopteris bicirrhis reaches a larger size and lacks the completely translucent body.

Bristlenose/bushynose catfish (Ancistrus)

Bushynose Catfish

The genus Ancistrus, with Ancistrus cf. cirrhosus and dolichopterus probably being the most popular, is collectively known as bristlenose or bushynose catfish. The common name is derived from the bushy facial growths mature males display.

All Ancistrus are mainly herbivores and can be fed a diet of algae pellets and blanched vegetables like zucchini. They will also happily munch on protein-based fish foods. They are a great addition to peaceful community aquariums of at least around 31.5″/80cm, although tank size obviously depends on the size of the particular Ancistrus variety you end up going for. Be sure to add plenty of hiding places.

Ancistrus are cave breeders and, if provided with the right type of environment and spawning sites, should breed easily. A fun project!

Pictus catfish (Pimelodus pictus)

Their extremely active nature, larger size (reaching up to 6 inches/~15cm), predatory tendencies and shoaling nature make pictus catfish unsuitable for just any regular community aquarium. However, this is no reason not to consider them. They are a real eyecatcher and a joy to watch.

Although pictus catfish are sometimes considered a solitary species, they are best kept in groups of at least five if you want them to feel at ease. For a group this size, an aquarium of at least 51″/130cm is a good place to start. Go for tough, fast tankmates: anything that fits into the pictus’ mouth will inevitably end up in there. The Ancistrus catfish discussed above could be suitable, as are larger schooling fish.

As can be seen in the video below, pictus catfish have a voracious appetite. A diet consisting of sinking wafers and plenty of frozen and live foods should work well.

Asian stone catfish (Hara jerdoni)

Hara jerdoni, also known as Asian stone catfish, are a tiny catfish species that is also found on the list of nano fish for small tanks. Due to their size and low activity level an aquarium as small as 13.5″/35cm can be enough to sustain these fish. They are slow eaters and easily outcompeted by faster tankmates, which means a very low-activity community is probably the best choice. In small tanks, try sticking to just some (dwarf) shrimp as tankmates.

Hara jerdoni is not a very popular species in the aquarium hobby as of now so definitive info about them is still scarce, but a group of at least 3-4 fish seems preferable. Feed a high-protein diet consisting of frozen and possibly small live foods.

South American bumblebee catfish (Microglanis iheringi, Microglanis poecilus)

Not to be confused with Pseudomystus siamensis, which is also often referred to as “bumblebee catfish” or “Asian bumblebee catfish” but grows much larger. The South American bumblebee catfish reaches a size of around 2.8 inches (~7cm) and is therefore suitable for medium sized aquariums.

South American bumblebee catfish can be kept in groups and combined with most community fish that appreciate similar water values, though be careful with smaller tankmates. Despite their peaceful nature these are still catfish that will gladly eat anything they can catch. A setup with plenty of hiding places is preferred, as this species loves to hide by wedging itself into any crevice it can find. Go for coconut hides, rocks and plants that don’t mind a relatively dimly lit environment, like Java fern.

Catfish to avoid

Although the list of worst beginner fish only features one catfish, some of the species for sale in aquarium stores are actually absolutely unsuitable for beginners and sometimes won’t work in most home aquariums altogether.

Shovelnose catfish (up to 40 inches/1 metre), red-tailed catfish (easily over 50 inches/120cm), common Plecostomus catfish (over 20 inches/50 cm) and other large and in most cases very aggressive catfish species are obviously best avoided unless you’re willing to go for the largest aquariums or even 1,000+ gallon ponds. These are sold as small juveniles that seem perfectly suitable for normal setups in the beginning, so research any and all fish before you buy!

If you have any more questions about the catfish on this list or want to share your own experiences, don’t hesitate to leave a comment below!

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18 thoughts on “8 Aquarium Catfish For Community Tanks”

  1. I have a 10 gallon and want to make it a catfish tank .do you have any recommendations of fish or plants .i plan to put some cories but can’t find any other catfish to go with them .

    • Hello! As for fish, you don’t have too many options in a 10 gallon aquarium unfortunately. I’d say pygmy Corydoras work if it’s a long tank and Hara jerdoni are also a good option, but a 10 gallon is just very small so other than that you’re very limited. For that reason I’d also recommend sticking with one species only to avoid overcrowding.

      As for plants, the options there are obviously much more plentiful. Some easy species to get started, maybe? 🙂

      Good luck!

  2. Hi I have a 10 gallon tank and I tried to get seven neon tetras TWICE. They all died within the first 3-5 hours what am I doing wrong? Also I live in Canada and it’s summer could it be the temperature??? Or is it the water because I put a dechloramine product in as well as a bacteria booster.

    • Hi,

      Sorry to hear you haven’t been having much luck with your neon tetras? Dechlorinator and bacteria booster shouldn’t have this effect. Did you test the water with a liquid test kit before transferring the tetras? And did you acclimate them slowly over the course of at least an hour?

      That all being said, I don’t recommend trying again. 10 gallons is a little on the small side for neon tetras, as they need more swimming room. I’ve got an article about stocking a 10 gallon here that contains some better choices. Good luck! 🙂

    • Well… you kinda don’t. It’s super difficult to sex them. If you’ve got a bristlenose you’re in luck, as the whiskers are a reasonable indication your Pleco is likely a male. Other than that… the females have slightly rounder bellies and are a bit larger, but it’s very hard too be sure.

    • Pick a hardier fish. Seriously. I find neons to be fragile & probably wouldn’t try them again. shrimps would love that 10 gallon!

      • I haven’t necessarily found them to be overly fragile, but do I agree that the 10 gallon would be perfect for (dwarf) shrimp!

  3. Hi! I am cycling the 15 gallon aquarium I got for Christmas and I was planning on putting 5 zebra danios and 2 dwarf cories in the tank. Once it’s cycled, of course. I am using a Tetra brand power filter rated up to 20 gallons. Then I came and read this website, saying that dwarf cories should be kept in groups of 5+. The other websites said that the cories were gonna be fine solitary, and one website said it would do better in groups of 2+. Help! I don’t know what to do! I won’t have room for 5 cories.

    • Hi! Cories are most definitely schooling fish, I have no idea why so many sites list them as non-schooling. I’ve found it’s a bit of an United States thing – they have a very different approach to fishkeeping compared to Europeans, more of a quantity over quality thing.

      If you keep just two dwarf Cories, they’re going to be very shy and stressed. I also think 5 is a low number for the danios and they’re actually better suited to at least a 20 gallon long due to their relatively large adult size and active swimming behavior. I’m not sure about the shape of your tank but I would personally skip the danios, get 8+ dwarf cories and maybe think about a smaller and less active middle layer schooling fish such as microrasbora or a small type of tetra.

      I hope that helps! Great to hear you’re planning ahead 🙂

      • Thanks! My tank is rectangular but bows out on the front and is relatively tall. I was planning on putting some Java fern towards the back, and maybe some Java moss too. I am a beginner, and would like easy fish. I can’t seem to find much information on any microrasboras, which makes me inclined to just get neon tetras. How many tetras do you think I could fit? Since they’re schooling fish, I expect I need five minimum. Using the one inch-to-one gallon rule, I could fit 8 cories & 7 tetras. But I could probably fudge it a little and do 8 tetras. Right? I just wanna run it past the expert before I actually set it up. And what good hiding places will the cories need? Will just the Java ferns be enough?

        • Hi,

          The plants sound good, Java fern is a very slow grower but it does grow quite large and is very decorative.

          There’s a caresheet on mosquito rasboras here on Seriously Fish, but if you want to go for neons that would work too. I think 8 cories and 8 tetras would indeed work; these are peaceful species so you can also consider adding some shrimp or small snails. Shrimp especially barely add any bioload and are great cleaners.

          As for hiding places, the Java fern will likely be fine but you can always add more plants; Cryptocoryne wendtii sounds like something that would work well in this setup, or maybe Anubias (which is very low maintenance).

          I hope that helps. 🙂

  4. Hi Mari
    The barbels were lost maybe 1 1/2-2 months ago, never any sign of rot. There is maybe 2 cm of barbels left, in any case I will take your advice and just won’t worry about it. Thank you very much for taking the time to answer my questions, I love your e-mails keep up the wonderful work.

    • Hmm. That all sounds fine. How far gone are the barbels? I don’t have personal experience with this happening but usually if fins are lost they won’t regrow properly either if they’re eroded too far. I’ve looked around a little and most sources seem to confirm this for barbels.

      In any case, as long as there is no ongoing rot I don’t think you have to worry about it too much.

  5. I have 3 peppered cory in my tank, along with 2 julii, 2 bronze and 4 albino. (60 gallons tank)
    About 1 1/2 month ago I found 2 baby peppered cories in the tank, I moved them to a 10 gallon tank to grow some and they are thriving.
    On the other hand, one of my albino lost its barbels, it is doing well but just not regrowing them, anything I can do for it?
    Love your newsletter

    • Sorry to hear your albino Cory isn’t doing well! Have you checked your water values with a drop test kit? What kind of substrate are your Cories on?


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