Rectoris posehensis belongs to the order Cypriniformes, family Cyprinidae, subfamily Rectoris, and genus Rectoris posehensis. Commonly known as: oil fish, line fish, phoenix rock fish.
The body is long, nearly cylindrical, with a slightly raised back, a straight abdomen, and a flat and slender tail peduncle. The head is small, the snout is pointed, and the mouth is located below the mouth. The snout covers the upper jaw, and the edge is shallowly split into a tassel shape. The upper lip disappears, and the kiss skin is directly connected to the lower lip; the lower lip is thick and has a narrow area covered with papillae at the front edge. The lower jaw is separated from the lower lip, the upper jaw is curved, and the lower jaw is flat with a sharp edge. There are 2 pairs of barbels, the muzzle barbels are short and the jaw barbels are fine. The dorsal fin has no spines and the caudal fin is deeply forked. The body is silvery-white, the back is gray-black, there is a black longitudinal band along the lateral line from the upper corner of the gill opening to the base of the caudal fin, and the dorsal fin, pectoral fin and caudal fin are gray-black.
The straight-mouthed dace often inhabits rapids and shoals, and is a bottom fish that feeds on algae. The spawning period is from June to October, and they often flock to small river pits to lay eggs during flood periods.
Zhikou dace is a specialty fish of the Xijiang River system in Guangxi, and is also distributed in small quantities in the Minjiang River in Fujian.
There are two other species of the genus R. luxiensis, namely: R. luxiensis, which is distributed in the Yangtze River tributaries such as Yuanjiang in Hunan, Qingjiang in Hubei, and Daning River in Sichuan; and R. luxiensis, which is distributed in Yuanjiang, Yunnan, and Wujiang, Guizhou. R. mutabilis. The difference between these two species and the straight-mouthed dace is not obvious, and their habits are also the same.
The straight-mouthed dace is not large, with a common body length of 8-14 cm. It is known as the "oil fish" because of its high fat content.
animal tags：
you may also like
The stickleback fish has the same habit of protecting its young as the snakehead fish. The difference is that the male fish is responsible for the tasks of nest building and baby care during reproduction. The breeding season of sticklebacks is from May to July every year. At this time, the ma...
Sinilabeo discognathoides belongs to the order Cypriniformes. Cyprinidae, subfamily Cyprinidae, and genus Cyprinidae. Commonly known as: mud shad, round green shad, herring. The body is slightly elongated and cylindrical, slightly flattened on the sides; the head is small...
The defensive behaviors introduced in the above two sections all refer to actions taken by individual fish, and defensive behaviors can also be social behaviors. Living in groups is also a form of defense. Fish often gather in large groups. When encountering a predator, although some individu...
Hemiramphus kurumeus belongs to the order Acupuncture, suborder Flying Fish, family Hemiramphus, and genus Hemiramphus. Commonly known as: needle fish, needle fish, needle pole, needle male. English name: Kurume halfbeak. The body is slender, cylindrical and slightly flat...
Salmon (Oncorhynchus keta) belongs to the order Salmoniformes, family Salmonidae, and genus Salmon. Commonly known as: Dafa salmon, Dafa salmon, Guoduo fish, Luoguo fish, Gudong fish, flounder, Qimeng fish, spotted trout, flower trout. English name: Big pacific-salmon, Chum salmon....
Liza haematocheila belongs to the order Mililiformes, the family Mililiidae, and the genus Haematocheila. Commonly known as: tide mullet, red-eyed mullet. English name: Soiuy, Redeye mullet. The body is like a mullet, cylindrical, with a flat front end and a flat tail sid...
Sinilabeo rendahli belongs to the order Cypriniformes, Cyprinidae, subfamily Sinilabeo, and genus Sinilabeo. Commonly known as: Qinglong stick, peach blossom stick, wild dace, Qingyizi. The body is long, slightly rod-shaped, and the tail peduncle is high and broad. The sn...
Changbo loach is commonly known as flower loach, flower loach and flower fish. The body color is light grayish brown, the fins are yellowish brown, and there are two rows of dark brown stripes on the body, which has high ornamental value. Because it is a bottom fish that lives in rivers, it h...
Email: jsset#163.com (change # to @) Please indicate your purpose of visit! Guangdong ICP No. 2022053326 XML| map| Chinese
