European dinggui fish (golden salmon, diced salmon, diced fish [T.tinca], bearded fish, golden fish, bearded fish, and diced fish), belonging to CYPRINIDAE, CYPRINIDAE, Yarrow subfamily, are native to Europe and are called royal pets. The survival temperature of the fish is 0-41℃; In terms of nutritional value, it has tender meat, no intermuscular thorns, delicious meat and high protein content (18.85%), especially rich in brain gold (1 1.49-20.88mol% unsaturated fatty acids), which is known as a green health food that sells well in Europe. The fish * * * has a variety of colors, such as green, yellow, blue and white, but the golden dinggui fish is mainly recommended. This fish is beautiful in shape, slightly cylindrical in shape, and its body is covered with extremely fine and dense scales. It is not only a delicious food in fish, but also the best for breeding, viewing and fishing.

Ding Gui fish is a valuable fish species, and its meat quality is delicious compared with that of ordinary fish. At present, the market price is also high, and the freshwater fish market in the Pearl River Delta reaches 120 yuan 1 kg, and the supply is tight; The price per kilogram in Guangdong, Sichuan and other places is around 50 yuan.

Variety name: Ding Gui fish, also known as European Ding Gui fish, commonly known as Ding Gui fish, Tinca tinca(L)

Variety source: introduced to Europe and Czech Republic.

Variety characteristics: It belongs to Cypriniformes, Cyprinidae, Yarrowinae, and Cinnamomum. There are four colors on the body surface: green, yellow, blue and white. The body shape is slightly cylindrical, the head and eye diameter are small, the green turtle is dark green with fine scales, the upper part of the lateral line is dark, the lower part is shallow, the abdomen is slightly yellow and white, the snout has a pair of extremely short lips, the fins are not hard, the chest and ventral fins are fan-shaped, and the tail fin is flat or slightly concave. It has tender meat, delicious taste and high nutrition, and is a good product for breeding, fishing and viewing.

Variety characteristics: it is a wide-temperature freshwater fish, and likes to live in fish ponds, ponds, reservoirs, rivers, lakes and other waters where aquatic plants inhabit, shade, feed and dissolve oxygen adequately; Under hypoxia, the skin has respiratory function; The survival temperature is 0 ~ 40℃; The suitable growth temperature is 2-28℃; The mature age is generally 2 years old, and it is a heavy egg with certain viscosity; Omnivorous, feeding on plankton and benthic organisms, artificially cultured and fed with granular feed.

Key points of culture: 1, main culture: every115 hectares of fish pond, fish with the size of 12 cm or more1000 ~1500 fish are fed with mixed feed containing 32 ~ 34% crude protein.

2. Polyculture: 300-400 fish with the size of1/0/5 hectares are stocked in the fish pond, and the fish are raised to the market. In the process of feeding, the fish and density of the same feeding habit should be properly controlled in the collocation of breeding varieties. Apply organic and inorganic fertilizers regularly to enrich plankton, provide a stable nutrient source, and properly add new water to adjust water quality and water temperature.