Catfish is a benthic carnivorous fish. Catfish prey on small fish, such as meal strips, crucian carp, gobies, whelks, carp, loaches, large green earthworms, a variety of small fish, beef and lamb, mole crickets, grasshoppers, Keto worms, tree worms, grass worms and praying mantis, small frogs, toads, moths, etc., but also eat shrimp and aquatic insects. Catfish are primarily swallowers, and their teeth serve mainly to prevent food from escaping.