I got mine about 2 wks ago, and i give mine tubifex worm cubes, bloodworms, sinking shrimp pellets, he even eats some flake food. He's only about 4 inches, but he's come to sort of trust me, will eat food if I hold it between my fingers. I have a "cave" formation that I made from bigger rocks, and I place the food on the roof of the cave, and he seems to like that.