I think it all depends on the fish. I have mine is with an oscar, Pecock bass, Pleco, Bichir, ropefish, and bala shark and he is doing great. The feeders would go too fast for him to get more then one but he eats pellets and he gets as many as he wants. No1 picks on him or buggs him My tank is perfectly fine right now. I wouldnt suggest trying it tho. My bass did pick on him for like 5 min but then he stopped. And when i intro duced him he was a lil linger then every1 else.