Bighead carp. According to checking the China Marine Information Network, the male fish said in Hunan is also called bighead carp, fathead carp, baghead carp, bighead carp, black chub, hemp chub, and also called bighead carp. Hunan people also call it big head bighead carp, scientifically called fat head bighead carp or bighead carp. The bighead carp belongs to the order Carpiformes, family Carpidae, subfamily Hypophthalmichthys, genus Hypophthalmichthys. It grows rapidly, the 3-year-old fish can reach 4 to 5 kilograms, and the largest individual can reach 40 kilograms, with a high natural yield. Diseases are rare and easy to feed.