I have one that will jump 1 1/2 inches out of the water for wax worms. He likes guppies next (22 in one day), followed by crickets and bloodworms. When he gets a little bigger, we're going to goldfish. He'll eat just about anything from the animal kingdom. Spits out tetra-min and all that other vegetarian crap.

When I get cheap, I feed him raw hamburger.