Ive come to the realization that ill find out for sure what he is when he gets his teeth in. The opinion seems to be that he is a pacu and that is fine with me cause that is what I wanted anyway. He would be none the happier to eat nothing but fish , but sience he has not had that choice he has eatten the pellets, but still acts like he is contantly waiting for something else. He does hover alot near the side of the tank looking at the fish in the other tank, and im sure if i dropped one in his tank it would be gone in a flash. Thank you everyone for all the help and I will keep you posted as he gets bigger.