That all depends on how much of the high protein diet you allow him(Scarlett Red missing Leg Crabs?haha [edited for content] happens). Ideal for triggers is krill, brine, mysis shrimp, anything fatty. Flake he'll eat, but flake alone won't keep him alive. I like to go mainly flake yet high protein 3-4 times a week. You'll know very easily if he's getting really hungry, he'll get so pissy, watch em' close!