Also known as carp muscle extension, carp seeds and so on. Carp is an excellent cultured fish, which originated in China and transplanted to other countries in the world, becoming a worldwide cultured fish. Carp has strong disease resistance, solid meat, delicious taste, natural reproduction in still water, large size and fast growth, and is suitable for breeding in various types of water.

Because of the different geographical distribution of carp, there are different groups. These different groups, that is, subspecies of carp, were formed through long-term artificial and natural selection. Common ones are: northeast carp; Group carp (pond carp, purse carp), produced in Guangdong and Jiangxi; Qilu carp, produced in Yunnan; Yuanjiang carp (red-tailed carp), produced in Yuanjiang, Yunnan; Triangle carp, produced in Guangxi; Big-eyed carp, produced in Erhai Lake, Yunnan, etc. In addition, there are many local species of carp in all parts of China, such as dark-striped carp in Hunan, red carp in Jiangxi, yellow river carp in Henan, Songhua Lake carp in Liaoning and scale carp and mirror carp introduced from abroad. Across the country, most species are wild carp. In recent years, the breeding of carp has been paid attention to, especially the hybrids produced by interspecific hybridization of carp are gradually replacing the local wild carp varieties.

Carp is a temperate freshwater fish native to Asia. I like to live in a warm lake or a slow-flowing river on the plain. Distributed all over the world except Australia and South America. It has been used as ornamental fish or edible fish in China and Japan for a long time, and it has also been cultivated as edible fish in Germany and other European countries. The dorsal fin root is long, without fat fins, and the mouth usually has whiskers, but some don't. There are throat teeth deep in the mouth, which are used to grind food. There are many kinds of carp, about 2900 species.