Mandarin fish, also known as mandarin fish, mandarin fish, season fish, flower crucian carp, etc., is classified into the order Perciformes, the fish family, and the genus Mandarin fish. Its meat is rich and firm, white and tender, delicious, with few intermuscular spines, rich in nutrients and high in protein. It is one of the precious freshwater fishes well-known at home and abroad. Mandarin fish is a delicacy at banquets whether cooked in sweet and sour, braised in braise, fried, or steamed. Also known as "freshwater grouper". There are many types of sweet-scented osmanthus fish, mainly including upturned-billed mandarin fish, big-eyed mandarin fish, long-body mandarin fish, spotted mandarin fish, dark mandarin fish, etc. Among them, the individual size and growth rate of the cock-billed mandarin fish are significantly larger than those of other species, followed by the big-eyed mandarin fish. Therefore, the current species for artificial breeding are mainly the upturned mandarin fish, and some are also breeding big-eyed mandarin fish. Characteristics: The body of sweet-scented osmanthus fish is tall and flat on the sides, and the back of the head is bulging. The mouth is large, the snout is pointed, the cleft of the mouth is slightly inclined, and the lower jaw protrudes beyond the upper jaw. There are small teeth on the upper and lower jaws, hoe bones and mouth cover. The scales are small and the lateral lines are curved. The dorsal fin is divided into two parts, the front and back, with 8 hard spines at the front and 13-15 branched fins at the back. Pectoral fin position. The pectoral and caudal fins are round in shape. The body color is brownish-yellow and the abdomen is grayish white. There is a black stripe from the tip of the snout through the eye to the front of the dorsal fin, and there are many irregular patches and spots on the side of the body. The eyes of the upturned mandarin fish are relatively small, and the back end of the mandible reaches the back edge of the eye, while the eyes of the big-eyed mandarin fish are larger, and the back end of the mandible does not reach the back edge of the eye. Mandarin fish is widely distributed in rivers, lakes and reservoirs. It is a bottom fish. The suitable water temperature for life is 15-32℃, and the optimal temperature is 18-25℃. Mandarin fish is a typical ferocious carnivorous fish. It has a strong ability to distinguish food. It mainly feeds on live fish and shrimps throughout its life. Even the fry that have just opened their mouths will also eat the larvae of other fish. When they grow up, in addition to eating live fish, they also eat shrimps and tadpoles. Under artificial breeding conditions, fish that are about to die but are still active, as well as recently dead fish or fish-shaped compound feed that are dynamic under the action of water flow, can also induce their feeding response. Under conditions of food shortage, artificial Domesticated, can also feed in small amounts. For bait fish that have been dead for a long time, whether they are mandarin fish fry, fingerlings or adult fish, they will not eat, and even if they are taken into the mouth, they will spit them out immediately. Its feeding method is to actively chase the food fish in the fry stage, bite the tail first, and then slowly swallow it; in the large fish and adult stages, it is an ambush attack. It often hides in the water. When it finds delicious food, it keeps a close eye on it and adjusts its position and posture at any time. When the prey approaches, it will suddenly attack, bite its head, and then swallow it. As long as the body height of the food fish is smaller than the size of the mandarin fish's mouth, High, generally can be swallowed. Mandarin fish mature sexually earlier. In southern my country, male fish usually reach maturity in one winter, while females reach maturity in two. They can spawn naturally in rivers, lakes and reservoirs, and can spawn multiple times a year. In the Yangtze River Basin, the spawning season is generally from May to July. The eggs are semi-driftable and can float with the current to hatch. Mandarin fish (Qiaozui Mandarin fish) grows quickly, and the maximum individual weight can reach 10 kilograms. But the specifications of 0.5-1kg are the best-selling ones on the market.