From my experience they will eat just about anything they can fit into their mouths. Other things to try: FD krill, algae wafers, frozen or FD shrimp, bloodworms, feeders, silversides..........
quality pellets first, everything else a treat, can break them into vegies by just not feeding any thing else, Oscars can go a good 2 to 3 weeks with out eating just fine. he will eventually eat the vegies, once he is broke to them they will be a normal treat food as long as you give to him once or twice a week, these days my Oscar eat anything except citrus fruits.
