Lctalurus Punctatus has other names, such as ditch catfish, river catfish, and America catfish. The output of the kind of fish occupies the first place in the U.S.A. Characteristics: living in the temperature of 0-38 , resist low oxygen, disease-resistant, like the weak light, hide by day and come out at night, omnivorous, like to eat meat, grow fast, high output, fine meat, high meat-producing rate, no sting among muscle, grey body, no squama.