gulpers are interesting fish haha. mine eats anything from my hand and NO TANKMATES unless they are same size or bigget catfish. He liked my Limas but not the others. He is in a 20G right now as he is about 4" now. He has two crayfish to clean up after him. The gulper eats fresh shrimp, fish (variety as you can see), carnivore pellets and krill. IMHO the krill is a awesome food for this fish, mine has colored up a lot since I first fed him krill.