he is very aggressive terrorizes 4 of my other piranhas . This fish dose not get along with Anything it is very territorial keeps them at one side of the tank and wont let them swim pasr and is always pissed off , dosent look like my other red bellys its smaller then the bigger ones but still fights with them and eats off there fins but hasnt lost any of his..he has different characteristics blood red eyes, dented forehead, alot more vibrant colours il post up some pics
any one can shed some light