I put 20 of them in a 130 gallon tank with 5 small African cichlids to keep their population in check. A year latter there are over a hundred cichlids so I have to break the tank down and get rid of all the cichlids. I like the exodons but they are FAR FAR from mini piranhas. They don't even bother baby fish. And to think I was worried about the plecos in the tank.









