The bighead carp (scientific name: Aristichthys nobilis) is also known as the silver carp, fathead carp, baghead carp, big head carp, black carp, hemp carp, and also called the male carp. It is a kind of freshwater fish. It is one of the four major fish in China, and has the nickname of "scavenger in the water". It is one of the four big fishes in China. It is similar to silver carp in appearance, with a sideways flat body shape. The head is large and wide, and the mouth is also wide and slightly upturned. The eye level is relatively low. Bighead carp grows in freshwater lakes, rivers, reservoirs and ponds. It is mostly found in the middle and upper layers of the water. It is endemic to China. It is widely distributed in China. It is one of the main objects of pond culture and reservoir fishery with high economic value. It is edible and has the effect of improving IQ, enhancing memory, supplementing nutrition and delaying aging on human body.