Animal Stories - People Talking About Knifefish


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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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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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Animal-World info on Black Ghost Knife Fish
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Sophie - 2010-02-12
Hi, I've just bought a 4inch knife fish, it's in my 190lt tank. He's with a clown loach, yoyo, pleco, cardinal tetras, harlaquins, and minnows. Was it a bad idear everyone seems fine at the momment. Please messege me sophie=price at symbol msn . com many thanks

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Taryn - 2010-02-07
Hi, Well I have two black ghost knife fish at the moment. I must say they are awesome and very amusing to watch. My first BGK fish is about 9 inches, I bought him when he was just over 2 inches about 9 months ago. He lives in a 42 gallon tank with lots of plants and drift wood, eventually will be moving him to a 6ft tank, but for now he lives with a bunch of kuhli loaches, a pleco, a whiptail and a whole lot of cherry shrimp, all of which he leaves alone. He loves bloodworms and all other live/frozen food which I give as a treat, but he mainly eats sinking carnivore pellets. He will come out at any time during the day or night. My second BGK fish is currently living in my discus tank, she is only 3 inches and eats anything mainly carnivore sinking tablets and flake food. She is living with 3 breeding discus pairs and always leaves the eggs alone. She mainly comes out at night as she is only new. I've had her for maybe 2 months now, but she is getting more adventurous. She will also move to another tank in the future. In conclusion the Black ghost knife fish are awesome fish to keep. They are the first fish I have had. So as long as your willing to do the research I do not think experience plays a big roll in keeping them.

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J - 2010-02-01
Kyle, Plecos and bottom feeders are included in that... they are bottom feeders and they count as fish. Yeah, it is over crowded with a freaking 10" pleco.

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Z. - 2010-01-19
Kyle, your 44 is overcrowded. The 1" per gallon rule doesn't hold true when dealing with large fish - it simply doesn't account for the amount of waste produced.

I agree with Koop. Rehome some of your fish.

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