The scientific name of pigeon fish is Beitong fish (scientific name: Coreiusseptentrionalis), which is a freshwater fish of the genus Cyprinidae. Commonly known as dove fish, pointed-billed fish, sand-billed fish and yellow-headed fish, it is unique to China. Only distributed in the Yellow River system. Its fast growth, tender and delicious meat, high economic value and good breeding prospects are important germplasm resources to be developed and utilized in inland waters of China. However, due to overfishing, water conservancy construction and other factors, its natural resources have dropped sharply, and its population has been in an endangered state, belonging to the national first-class protected animals. Tong yu in the north is a freshwater fish in the middle and lower reaches, and likes to inhabit the gravel and slow-flowing water bodies in river bends and bottoms. Often in groups. In winter, it lurks under deep water or deep water rocks, and swims and lays eggs in spring. The breeding period is from May to July, and the eggs are laid in small groups or no groups. The eggs are inflammatory, but they can go with the flow. Retreat to the downstream in September -65438+ 10. Pigeon fish feed on eggs and seedlings of other fish and become the main food for adult fish. They also eat aquatic insects, small fish and shrimp, plant debris, grains, small snails and mussels. Most of them feed in muddy deep water. During the breeding period, it still maintains a certain feeding intensity.