Jiayu is not a specific fish. The word Jiayu comes from a poem in The Book of Songs. In the Book of Songs, it should generally refer to the delicious fish in the south. Now it may be that some fish of the family Cyprinidae are called Jiayu. Cyprinidae is a large family of freshwater fish, with more than 3,700 species of Cyprinidae in the world.

Fish is the most species among vertebrates. There are more than 36,000 known fish species in the world, accounting for more than half of vertebrate species, and an average of 150 new fish species are discovered every year. Fish inhabit almost all water environments on the earth, and more than 70% of the earth's surface is covered with water, so fish have a broad living space.

Common fish

1, crucian carp

Crucian carp (Carassius auratus) is a common freshwater fish, which belongs to Carassidae and Carassius collectively in biological classification, and is also called Carassius auratus seed, original Carassius auratus and Carassius auratus shell. Distributed in ponds, streams, rivers, lakes, reservoirs, swamps and other water bodies all over the country. Omnivorous, gregarious, mainly feeding on aquatic plants, algae, crustaceans, aquatic insects and larvae.

2. Carp

Carp is a common freshwater fish, which belongs to the general name of CYPRINIDAE and CYPRINIDAE in biological classification. Also known as carp muscle extension, carp seeds, red tail and so on. , named after scales with cross texture. It is widely distributed all over the country, omnivorous, eating both meat and vegetables, and has a wide range of bait. In order to find food, I often eat seeds and eggs in the soil like a pig.