It's just frozen shrimp for krogers. I wait till it goes on sale then buy the biggest bags I can find. I did however find that mejiers has HUGE bags with roughly 150 shrimp per bag for $10 and it's basically the same thing. this tank gets shrimp talapia and pellet. it gets babied. Once my fish get to the big tank lifes alot easier lol. or at least the foods better. lol