Carapo Knifefish

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Industrial;4897163; said:
I have a 6" and a 7" Hydrolycus tatauaia, seven 3-4" glass headstanders, three 6" Ageneiosus sp. catfish and a bunch of smaller cats that he would be going with.
What species more specifically?
Kaliedoscope;4899674; said:
BIIIIIG TANK BIIIIG BIIIIG TANK. I think its sad that carapos haven't yet reached 2 foot in captivity, If I had the money I would get one, but youd need at least a 300 gallon to take care of it right. Also, I think its important to note that they spend half their time in open water and half in shallow swamps, wherein they make nests. I have read many a scientific paper on this, look them up on goole scholar.

If I ever got a carapo knife, It would be in a tank at least 6 foot by 12 foot, with half the tank being 1.5-2 foot deep, elevated, and the rest at least 4 foot.
This is the consensus I have come to after research, I really wanted one until I found out about their life cycle. I think it's mean to force a wild caught fish into a tank without considering its natural cycles. They also need a rainy season, though that can be accomplished with a TDS/conductivity tester and D/I or R/O water.
:screwy:
 
Hoyo12;4899684; said:
What species more specifically?

:screwy:

Sorry man, but thats what I believe.

The point I was making is that that is the minimum you would need to have in order for a carapo to live out its natural lifecycle. Anything else IMO would be lessening the quality of its life to a degree that I, personally, would not find respectable.
Of course I don't keep bgk because I use flourescent lights and used to have a microwave, I respect knifefish greatly and don't just see them as things to be collected.
 
The smaller cats are a full grown midnight catfish, emporer pleco and 5" longnose raphael catfish.

Kaliedoscope: You do realize that every fish lives different in the wild than in captivity right? Adult clown knives (who reach 3 feet) are pursuit predators. I would think they need a bigger tank than the sedentary, and smaller carapo knifefish. Plus, just about every fish experiences rainy season which you stated is necessary to keep the knifefish. Decreased conductivity of the water accomplished by neutral rain causes spawning of many mormyrids and gymnotiformes. Other properties of rainy season causes spawning of just about every other freshwater fish.

From what it looks like to me, if you cannot perfectly mimic nature in an aquarium you should not keep fish. And nobody can perfectly mimic nature. And I don't think fish need to spawn in aquariums to live a healthy life, and the truth is fish do die from spawning occasionally too because of stress.
 
Industrial;4900587; said:
The smaller cats are a full grown midnight catfish, emporer pleco and 5" longnose raphael catfish.
IMO, it's still a risk. I had two Eclipse Catfish at about 6" die from infection after one bad night with the Carapo. I've also tried Channel and Bullheads with signs of fin nips that may have worsened over time if I had kept the Knife in the tank. He would also go after the 8"+ Oscars, JD's, and occasionally nip at the 24" Pacu. If it was in the tank, it was at risk of being nipped, lol.
Could it work? Yeah, maybe, but the chances don't seem too good. If it were me, I'd give it a try either way to at least see what does and does not work.
 
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