Re: Cannible Fish???
i'm taking care of my brother's three goldfish while he's off at school. He's got a small, medium, and large. The big one used to chase the other two around a bit, especially when there was food to be had, but the smaller ones survived. I think the trick is to have plenty of stuff in the tank that the fish can hide behind/inside. We've got a toy rocket-ship, a fake plant and some larger stones and shells that they can dodge around until the big fish forgets what he's chasing them for. i've heard that goldfish only have ~3 seconds memory, and in observation that seems to be the case.