Right I have phoned my farther who sold the fish for me a while back he recons it was a foot long I think it was a bit bigger but as I said defiantly bigger than what they have quoted. (This was a while ago) it was relatively peaceful but will eat any small fish that are in the tank with it. We put some Guppies in with it one night to see if he would eat them and he ate the lot. We had him eating floating pellet. Other than that he was not aggressive and if at the time I was not moving and shutting down my fish room and my father was moving and shutting his down at the same time I would still have him.