Carp is a common freshwater fish in China, and it is also the main economic fish species. It usually lives on the bottom of the water and likes to move alone and occasionally in small groups. This kind of fish has a wide range of feeding habits, can eat a lot of food, and has the habit of digging mud. As a poikilotherm, activity is also limited by water temperature.
Grass Carp is a herbivorous fish of the genus Grass Carp of the family Cyprinidae. It usually lives in coastal areas with more aquatic plants and likes to move in the middle and lower layers of the water body. This kind of fish itself is more active, and swim very fast, usually in groups to feed, young fish will eat larvae, adult fish occasionally eat some meat.
Crucian Carp is widely distributed in China, except in the Qinghai-Tibet Plateau, it can be seen in other major river systems. Its feeding habits are miscellaneous, and its adaptability is strong, and its requirement for temperature is not high, so it is raised everywhere. In addition to aquaculture, it is also a common fish species for wild fishing.
Black Carp, grass carp, silver carp and bighead carp are also known as the four major Chinese carps, which are widely raised. It usually inhabits the middle and lower layers of the water body, is inactive in nature, and mainly preys on some benthic animals. Although it is not as active as grass carp, its strength is much greater, and it is mainly fed with silkworm pupae, corn, bean cakes and so on.
