Animal Stories - Clown Knifefish

Animal-World Information about: Clown Knifefish

The beautiful Clown Knifefish is probably aquarist's most favored species of knifefish!
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Dylan Miller - 2017-02-15
How can you state that the fish can reach nearly 40 inches and recommend a 55 gallon as the minimum tank size? The tank is usually only 12 inches wide!

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  • Clarice Brough - 2017-03-07
    Yes, these fish can get very large in the wild. However, please see the 'description' section above and you'll see that most tank raise specimens won't grow much larger than 10 to 20 inches (25 to 50 cm). Also, as stated under 'aquarium setup,' a 55 gallon tank is only suitable for them as juveniles. 200 gallons or more is recommended for the adult.
  • Courtland - 2017-12-10
    Even if the fish 'stopped growing' at 10-20 inches, it's never going to live a healthy long life in a 55 gallon aquarium. What happens is that the fish, on the outside, stops growing, but the organs don't. Eventually the organs overcrowd the stunted fish's insides, likely putting pressure on the swim bladder, which leads to continuing complications and ultimately death. I wouldn't suggest this fish for anything smaller than a tank 6' x 3'
  • Cory - 2019-05-25
    There is no way when they reach fill maturity that they can fit in that small of an aquarium. That's why they have taken over here in South Florida because people follow that then when they get 2 big they release them in the lakes and canals. They'll basically get as big as the body of water u put them in. I've personally caught 5 of them over 48"and exceeding 12 lbs...
Cory - 2019-05-25
Some of the above information isn't accurate. They reach well over 36"in the wild. I've caught a few at 48" and above over 12 lbs. I have pics but I don't see where I can upload them though...

Ambrin Mclean - 2016-09-04
How much does this kind of fish cost roughly

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  • Anonymous - 2016-09-10
Klaus - 2012-10-20
I have 2 knifefish (in the same tank mind you) and I've been wondering would I be able to put some Angelfish in with them I'm also interested in clown loaches, any advice?

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  • Jeremy Roche - 2012-10-20
    In a large tank itshould be fine.
  • mrbob - 2014-10-03
    The angels will become dinner should be housed with other large non aggressive fish.
  • Anonymous - 2015-07-28
    I have a juvenile clown knife in a 55 gal with my 5 angels, which range from 4 inches tall to 6 inches tall, and they leave each other alone. However, the clown knife is a predatory fish, so anything under an inch has been eaten. I think my clown knife is growing at a few centimeters a month, and will be selling it when it reaches 12 inches. I wouldn't keep a full-grown knifefish with anything less than a couple hundred gallon tank and fish that were at least a foot or two in length, as the bigger knife fishes can grow to 3 and a half feet long. With your fish, keep in mind how big the angelfish are and how big they will be compared to the knife fish. (PS: I also have a dwarf gourami that was a gift from a friend, a pleco as big as the knife fish, some clown loaches, and a small catfish that's about 2 1/2 inches, and none of them have been harassed by my knife so far. Keep your fish well-fed and I doubt anything too big to be eaten will be a problem to house in the same tank.)
  • Anonymous - 2015-08-01
    if the tank is about 75 gallons you are fine all those fish are not aggressive they are just big tank
hemant bhoyar - 2015-04-22
I am buying a Chitala fish

hemant bhoyar - 2015-03-28
Please full details and prices on clown knifefish.

Knife Fish Lover - 2014-10-31
Can a clown knifefish live in a 55 gallon long with:2 african brown knife fish,6 weather loaches,1 plecostomus, 1 butis butis fish,and 2 spotted raphael catfish.

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  • Clarice Brough - 2014-10-31
    Combatibilty wise, it's probably fine... but that's a lot of fish that get pretty good sized for a 55 gallon.
  • Knife Fish Lover - 2014-11-01
    Actully i do NOT have the raph. cats and the butis butis,but yesterday i got a lesser peacock eel...
David - 2010-05-22
Can I keep a clown knife in a 20 gallon tank with 3 Black Ghost Knifes, 2 Butterflyfish, 4 Elephantnose, 1 Bichir, and 1 Red-tailed Shark? I also have three apple snails. Would the Clown Knifefish damage my Amazon sword plants or my water lilies?

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  • Daniel - 2010-06-29
    Dude No way, that's already waaay too many fish for a 20 gallon tank. Get a 125 at least if your bgk and nosers are getting along.
  • Anonymous - 2010-10-13
    Yes they will get along but you have too many fish in that tank, you might want to upgrade soon.
  • Warren - 2010-10-15
    You can keep a clown knife with your fish in a 20 gallon temporarily. A clown knife is a large growing fish and would out grow a 20 gallon and your other fish.
  • Shaun - 2010-10-18
    No i would not keep this fish in anything smaller than 125g+. It will be a 20+ inch monster. I would also not get the ghost knifes as they will get 20+.
  • Evelyn McCloy - 2014-09-30
    Only if you add three oscars and several Dow's cichlids, and, space permitting, a goat or two-rick
  • ananya - 2014-10-02
    are you crazy David??!!!20 gallon for all those fish. Please tell me you are joking..
Max miller - 2013-04-05
I have a gold clown knife and he is in a 45 gallon. Can he live in there forever with other 3 cichlids?

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  • Jasmine Brough Hinesley - 2013-04-05
    If he gets along fine with the cichlids, there is no reason they can't stay together. My main concern would be that the tank is too small. These knifefish can get quite large and a 45 gallon tank will not be big enough in the long term.
  • Benny Castillo Moreno - 2013-06-14
    yes he can, mind did.
  • Evelyn McCloy - 2014-09-30
    Given that cichlids comprise such an extremely large family, and with so many varying traits, and sizes it is impossible to say that fish A will get along with cichlids.  You need to be more specific; i.e., what would do well with a severum would not be sure to be best buds with a Midas cichlids-----rick
Anonymous - 2014-09-06
Hi did clown knife fish eats floating foods?

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  • David Brough - 2014-09-07
    Probably not, the bulk of their diet should be live foods, and they may take some pellet foods. Flake foods tend to float and they won't be too crazy about it.