I've offered Feeders of all sizes, silversides, sinking hikari cichlid pellets, floating hikari cichlid pellets, sinking shrimp pellets.... The people I got him from gave me all the food they had been feeding, and they had owned the fish for about two years and it had grown considerably in that time so I know it was eatting. I don't understand why its not eatting... only thing I havn't tried yet are market shrimp