Duobao fish (scientific name: turbot) belongs to turbot. It is a kind of marine benthic fish, belonging to Scophthalmus, a family of small-eyed fishes of teleost. Commonly known as European flounder, it is called "Duobao Fish" in China. In natural waters, adult fish can grow to 75 cm. The body is very flat, rectangular, oval or long tongue-shaped. The eyes of young fish are on both sides of the body, and the body of adult fish is asymmetrical left and right. One eye turns left or right gradually, and both eyes are located on the left or right side of the head. The mouth is slightly prominent. Fins are generally spineless. The dorsal fin and the anal fin are longer at the base, and are connected or not connected with the caudal fin. Both eyes are on the upward side of the body, and the color of this side matches well with the surrounding environment; Their downward side is white. There are extremely fine scales on the body surface. Duobao fish are widely distributed in warm and hot waters, and mainly feed on benthic invertebrates and fish. Habitat in the sandy bottom of shallow sea, preying on small fish and shrimp. Their flat bodies are especially suitable for benthic organisms on the sea floor. Native to the Atlantic Ocean in Europe, it is recognized as one of the high-quality flounder in the world. If artificially raised, its growth period is obviously shortened, and it can reach about 500 ~ 600 g in the same year under suitable conditions. The male reaches sexual maturity in one year and the female reaches sexual maturity in two years. The natural maturity period is May-August every year. Under the conditions of temperature control and light control, mature eggs can be obtained all year round, and artificial insemination is used for artificial reproduction. (Overview of picture data sources) Reference data sources and reference data sources