Heres what I feed mine - Hikari Sinking carnivore pellets, Krill, Frozen Bloodworms, Frozen Brine Shrimp, Sometimes Algae Wafers (Pieces of it), Mealworms, and hes even ate some Market shrimp before.
Pellets are his staple, and the frozen stuff and krill are supplement to it. Bloodworms are his favorite though. Thats the one food he goes into a frenzy over.