Animal Stories - Knifefish


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Carol Montgomery - 2010-07-08
I never see my knifefish. He stays hidden at all times! Kind of a disappointment! I only have one. He's in a 55 gal tank w a couple sharks and 4 gouramis and a couple tiger barbs.

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  • Tlaloc - 2010-07-14
    Depending on how long you've had him he might just keep hiding, also tiger barbs are famous for nipping fins, and a knifefish's undulating fin is a big temptation. I have mine in a 75 gallon while at least 6 or 7 hiding places so he's good, and mine will turn right around and bite at whatever bites his tail. They also don't like bright lights much( mostly nocturnal), so try dimming your lights by taking plastic plants, ripping them out of the little roots and letting them float right under your lights and/or giving him more hiding places, they like dark caves, broken/upturned flowerpots or PVC pipe will do, and if all else fails just give him some time and he should come out more often over time.
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Animal-World info on Black Ghost Knife Fish
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enrique - 2009-02-14
If anyone is really interested in breeding these fish email me at celavie90@yahoo.com.

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  • le - 2010-06-21
    I'm very interested I'm learning how to breed these fish any help on how to tell what sex they are would be a great start.
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Animal-World info on Clown Knifefish
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David - 2010-05-24
Actually, make that two butterflyfish, one black ghost knife, four angelfish, four Black Skirt Tetras, and one Red-tailed Shark. I still have three apple snails and the Amazon sword/water lily plants.

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patoscar - 2010-05-12
Help I am starting on big aquariums can I keep 1 oscar a 1 clown or ghost knife fish, 4 silver dollars, 1 ornate birchir in a 55 gallon tank please need advice from someone who knows best thanks?

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Animal-World info on Bronze Featherback
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luke - 2010-04-18
I have two asian knife fish in a 500 litre tank, 1 is 13" long and the other is 14" long. I have had them for about 2 years now. They grew up alongside 2 red oscars, 4 apollo sharks, 1 tire track eel, 1 upside down giant asian catfish and half a dozen bronze corys and a black pleco. They all get on extremely well and the two knife fish swim around together in harmony as do the oscars.There had never been any problems and they have never tried to eat the smaller fish. I would recommend these to anyone.

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Animal-World info on Black Ghost Knife Fish
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Lisa - 2010-03-31
I have a 110 gal tank with one bgk. I have had him for about 3 months. He was doing fine until tonight I noticed a white film or haze on his body. Is any thing wrong with him?

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Calvin - 2010-02-08
To Kyle, I agree that too many people are too quick to tell others they are doing wrong. Your tank sounds fine to me. I had a black ghost knife over ten years ago. He lived for more than 12 years. He grew to about 16 or 17 inches. He was kept in a 55G aquarium. His tank mates at the time were nothing but guppies. And yes it was way beyond the 1 inch rule. As far as the 1 inch rule I too am old school. I knew about keeping bacteria in the filter, water changes, and Ph. 20 or so years ago that is all I cared about or knew about. I must have done something right to keep my ghost for more than twelve years. He also made an 18 hour drive from NC to IN. With that limited knowledge, "back in the day", I managed to keep Tiger Barbs with a breeding pair of angels, (lots of store credit). I still get upset when a fish dies as I am sure you do to. My four year old son is in charge of the flushing as I have taught him that "FISH DIE". I really enjoy the ones that read about the 1 inch rule and then explain that they have more than one BGK. I have read that you should not do this. Although, that is exactly my plan. I am hoping to gather info on the BGK and breed them. It is just a goal I have set. I have a room in the basement that is dedicated for this purpose. I have built aqua bridges to connect all my tanks together. Each tank is set up a little different. I am currently stationed in germany with the army. The water here has a Ph of about 7.8... higher than I prefer but it is what it is. I would love to find out more about your set up. If it is listed on this site give me time to find it as I am new here. Hope to hear from you and any other BGK keepers.

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  • MRJ - 2010-03-04
    Hey man I agree 100% with you, not all of the fish are the same. I recently bought a BGK and it is the most awesome of fish. I have read 100 different posts on how to care for a BGk and everyone says different things. =/
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Animal-World info on Zebra Knifefish
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Anonymous - 2008-10-07
If I put a african brown knife with a electric yellow cichlid, will the knifefish destroy it?

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  • Ryno - 2010-02-28
    These fish are not compatible. If the Knife can fit the Cichlid in his/her mouth he/she will eat the Cichlid. If the Cichlid is bigger than this it will likely torture and skin the Knife.
  • Fishman - 2010-03-26
    You have it backwards the knife is not an aggressive species it is predatory however cichlids are extremely territorial and just all around mean in my opinion most cichlids should only be kept with other cichlid species the exception to this are rams and dwarf cichlids.
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Animal-World info on Clown Knifefish
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Bethanie - 2010-02-24
We have two clown knives, one has definitely out grown the other, and based on the behavior they have been exhibiting we believe that they might be mating. They are currently being kept in a 150 gallon with two plecos, a cat fish, and three medium sized oscars. We really don't know a whole lot about their breeding habits and internet research has gotten us nowhere. While we do believe they might be breeding, we are also afraid that they might be fighting over territory. Could anyone give us some insight on breeding and if they are, how can we help the fry to survive? Thanks in advance!

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Kevin - 2009-08-29
I have had my knife for a little over 2 years now he is a great fish.I currently have him in a 125 gal tank but soon to be 180. If you are thinking about getting a knife say goodbye to anything small in your tank and try feeding him dryed shrip or any dry brine.That way he doesnt get used to eating live fish. If you keep contact with your tank often he will actually become very friendly as he will eat ot of your hand and sometimes swim throgh your hand when feeding. Very amazing fish and once they grown past 6 to 7 inches very easy to take care of! Feel free to email me with any questions kevinkapanka2003@yahoo.com

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  • Brody Avalon - 2010-02-24
    Hmm...I have had mine for 15 years and he is about 20 inches long. I would caution handlers from feeding them unless you have quick fingers. He doesn't break the skin but it is painful when they bite :-)
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