jason is right.. bigger tank and relax about how much he eats.. my TSN is 19" long. i feed the fish twice a week. when i feed the catfish tank he eats one.. sometimes 2 pieces of fish or 2 - 3 shrimp and even if i wanted to i could not make him eat more. He eats what he needs to eat, and then he doesn't eat anymore. And he is healthy and happy and still growing. (and he's about to move to bigger diggs.. )