Animal Stories - African Knife Fish

Animal-World Information about: African Knife Fish

What the African Knifefish lacks in color, it more than makes up in hardiness and personality!
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Alex - 2014-01-12
I have a 5 inch African brown knife fish in 36 gallon bow front. He is living with 3 agassizi Cory cats and a redtail shark. At the local fish store I was told sharks would be ok but somebody on another site said the shark isn't a good idea at all. I need some help. So far they have been getting along just fine but I'm worried I like all my fish in that tank and don't want them harmed.. Plz help

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  • Clarice Brough - 2014-01-16
    You'll have to keep an eye out. When the Red Tail Sharks are young they tend to hide and be subdued, but as these fish mature they are known to get aggressive and territorial issues can ensue. But whether you'll have a problem or not remains to be seen. They tend to be most aggressive to others of their same species.
kelly - 2012-11-28
i have two black african knifefish and one seems to lay on the gravel alot but is still very active at times does anyone know wat it is doing

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  • Jeremy Roche - 2012-11-28
    Knife fish tend to stay on the bottom of the tank.  It is where they frrl most protected and secure.
  • Chaz Norlund - 2013-09-27
    I also have a ghost knife fish and a brown knife fish. I found out that the smaller one the brown knife fish was picking on it. They both give it a slight electrical shock which might bother them. What size is your tank? The more room and hiding places the better.
asish timilsina - 2012-12-29
I have two black african knife fish . Now one fish seem to scratch itself to the gravel at the bottom and it is very still sometimes . What may have happened to it?

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  • Jeremy Roche - 2012-12-29
    Check amonia levels!  Fish will itch to feel better when amonia spikes.
  • asish timilsina - 2012-12-31
    How do I check for amonia levels this is my first time so plz help me
  • Jeremy Roche - 2013-01-01
    You can either go to the pet store and get test strips or you can just bring a sample of the water you bought the fish from and ask them to test it.  Ask them to test all levels not just amonia.  I would also have them walk you through it so you can do this at home when needed.
Brandon barnabe - 2012-10-10
I am going to get 1 African knife fish soon,i believe it is about 2 or 3inch long, will a 20 gallon tank be fine for a few months? since it takes years to grown for them.Also when he is at 3 inch is it okay for them to eat feeder fish smaller than them? ive seen some pretty small ones at petsmart. Please if any one could help me, much appreciation.

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  • Jeremy Roche - 2012-10-10
    For a few months it will be fine, but remember these fish can be very sensitive to tank changes.  They can eat small feeders but make sure they are quaranteened to make sure you do not add disease to your tank.
  • Jeremy Roche - 2012-10-10
    For a few months it will be fine, but remember these fish can be very sensitive to tank changes.  They can eat small feeders but make sure they are quaranteened to make sure you do not add disease to your tank.
Anonymous - 2012-10-03
Will black knife ghost fish get along with a small puffer fish?

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  • Jeremy Roche - 2012-10-04
    The puffer is normally the issue not the knife.  Really depends on personalities. I have kept them together and didn't have issues. But it was in a very large tank.
john - 2012-08-08
I have an African knife fish in an 10g tank for now what other fish can I add to the tank

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  • Charlie Roche - 2012-08-09
    They are carnivores so other fish make great food.  Also it is recommended that a Kiife Fish have at least a 55 gallon tank.  You are running the risk of stunting or death.  Anser to your question - you can't put any other fish in a 10 g tank.
  • Jeremy Roche - 2012-08-09
    What size is the knife.  There are some fish that will work, but you will nore then likely need to upgrade tanks.
  • john - 2012-08-09
    the knife is about 3 inches
Sam - 2012-07-18
I have two African Knife Fish and two Bala Sharks. What would be the minimum size tank for these fish, leaving room for maybe two more fish?

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  • Jeremy Roche - 2012-07-19
    These fish get pretty big, so the tankmates that you pick will need to be equally as large.  I would get at least a 90 gallon tank.
Rickey-B. - 2012-06-13
Hi, I have 2 African Knife Fish 12 ins+ long in an aquarium 30-12-15 ,should i take them out?

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  • Charlie Roche - 2012-06-14
    You need a larger tank - please read the Animal World article above.
urmil - 2012-05-06
I have one of these knife fish in my tank and I wanted to know how long they live
Previously I had bought 2 bt now just one left
So guys can u pls ans......??

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  • Charlie Roche - 2012-05-07
    The average life expectancy runs between 3 - 7 years.
  • Jeremy Roche - 2012-05-07
    A well taken care of knofe can live up to 15 years. These fish are very prone to illnesses cause from poor conditions so the conditions need to be pristine to reach 15 years.
Ito - 2011-11-29
I'm thinking about getting an African brown knife. What is the smallest tank mate that won't get get eaten? Are cherry barbs, mollies and cory cats too small?

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  • Charlie Roche - 2011-11-30
    I think they would be too small. The Knife fish can go to 12 inches and if it fit in their mouth - they will eat it.
  • Anonymous - 2012-01-14
    Cory cats might be ok because they have spines so they wont eat them