The place is called Flower Fish.
Total length172-258 mm, with an average of 209.7 mm. Body length149-199mm, with an average of177.5mm..
Body length, lateral flat, spindle shape. The head is small and the side is flat. The kiss was short and blunt. Big mouth, front position. The mouth crack is inclined. The vomeroid process is longer. Jaw, hyoid and vomer all have small and beneficial teeth. The teeth of bone and vomer are arranged in a long strip. Jaw teeth are single, with about 20 teeth on both sides. Double rows of plough teeth, about 13 pieces. The maxilla is well developed and extends backward slightly beyond the posterior edge of the eye. The eyes are large and located slightly in front of the head. The branchial foramen is large, the pseudogill is developed, and the branchial membrane is not connected with the cheek. Gill rakes are slender and sparsely arranged. The tail handle is thick and short. Small scales; The base of dorsal fin, caudal fin and pectoral fin are covered with scales that are easy to fall off. The operculum is also covered with scales that are easy to fall off. The lateral line is complete and almost straight, located in the middle of the body. About 17 lines from the lateral line to the base of lipid fin (excluding lateral line scales). The anus is close to the starting point of the anal fin.
The dorsal fin is thin and has no hard spines; Its rear edge is slightly flat; Its starting point is slightly in front of the center of the body. Lipid fin is small and undeveloped, but its trailing edge can move freely; Its length is about equal to the eye distance, and its base is about opposite to the base end of gluteal fin. The end of pectoral fin is slightly blunt, and its length accounts for 51.5-56.8% of the distance from pectoral fin base to ventral fin base. The end of the ventral fin is slightly round, and its length accounts for 62-74% of the distance from the base of the ventral fin to the starting point of the gluteal fin. Its starting point is opposite to the 4th-6th branch fin of dorsal fin. The gluteal fin is short and does not reach the base of the caudal fin. The caudal fin is wide (so it is also called wide-tailed river salmon), the trailing edge is concave inward, slightly curved, and the ends of the upper and lower leaves are slightly rounded.
Body color: when living, the body is fluorescent, the back is green and brown, the side is lighter to the lower part, and the abdomen is almost white. There are irregular black spots on the back of head and fish, dorsal fin and pectoral fin; The lateral and dorsal fins and caudal fins have green, red and black spots; These spots are irregularly distributed above and below the lateral line, but there are fewer green spots below the lateral line. Because the fish is extremely bright and beautiful in color, it is called "Flower Point Fish" locally. Formalin-soaked specimens: the fish's bright color decreased significantly less than half an hour after it came out of the water. After two or three days, the black spots stand out; After a month, the fluorescence faded, the body color was brownish gray, the green spots disappeared, and the red spots with white circles were only visible above and below the lateral line.
Ecology: Feeding on aquatic insects and crustaceans. The length of digestive tract is 1. 1 times of body length. Living in the mountain reach of the river, the water is fast, and the sediment is mostly the backwater of stones.
Economic significance: The fish is full of fat, rich in fat, thick in meat and delicious, so the local people like to eat this fish the most. But the individual is not big and the number is small.
Distribution: The distribution of river salmon in the world is mainly in the cold zone of the northern hemisphere of Europe, such as Ireland, Iceland and rivers flowing into the Gulf of Finland, where river salmon exist. This fish is distributed in Zhuomu reach in Yadong area of Tibet in China, but not caught in Zhuomu River more than 20 kilometers north of Yadong.