Richard, have you tryed live worms at all? there movement always seems to attrack picky eaters i found... either black, blood or maybe even try mealworms? hikari massivore, feeder shrimp and maybe powder algae for Malawis all may be worth a go? from conversations ive had with oddball, i was under the impression that around this size its possible to start slowly introducing them to meatier foods too, but i think need to just get it eating first....