i think that was completely messed up and wrong. the fish only do what they are preprogrammed to do. it's bad enough they get taken out of their natural homes, are born in an unatural place,....... all they wanna do is eat, get big and breed, it's the natural instinct to survive. when i got a new silver aro and the other tank mates gobbled up the food first, I moved the silver aro to another tank by itself and once it settled in, and was comfortable with me feeding it and recognized home, master and feeding time, i put it back in with all the other fish. that's the least you should've tried doing first. good luck in the future and hope you wise up a little. it's not the fish's fault