Gymnodiptychus pachycheilus

The body is long, slightly flat, and the tail handle is thin. The head is cone -shaped, the kiss protruding, the kiss skin stops in the middle of the upper lip; There is no sharp cutting edge of the jaw. The lips are very developed. The left and right leaves of the lower lip are connected to each other in front, and the parts are rolled inward inwardly without connection. The corner of the mouth must be one pair, which is thick and short, and the end is about the lower edge of the eye. Most of the body surfaces are exposed. Except for one large anal fin on each side of the pilot, only 2-4 rows of irregular scales are behind the shoulder straps above the pectoral fin base. The side line is straight, and there is no hard spines on the dorsal fin. The body and head are yellowish or gray -brown, which is evenly distributed with dark brown spots, and there are a few spots below the side line; the abdominal fin is gray or yellow -gray. The dorsal fins are light gray, and the tail fin is ligh

Qinghai Province is common in Zhaling Lake and Hubei Lake and the Yellow River. The Water Department and the Kuogu River on the upper reaches of the Yazhen River are distributed, and they are distributed in rivers and lakes.

Thick lip naked lip fish scientific name Gymnodiptychus Pachycheilus, belongs to carp, carp, cracked belly fish subcare, naked heavy lip fish.

The thick lip naked lip fish inhabits the Kuogu River of the highland of the river, such as Qinghai, Gansu, Sichuan, and the upper reaches of the Yellow River. Aquatic animals such as moth moth larvae, end -foot shrimp, and stone flies are eaten, and they also eat a small amount of plant debris. The reproductive season is April to May.

The breeding period of thick lip naked lip fish breeding is April to June, and the period is May. In the breeding season, the gender can be used for second sex. Female and male fish can reach sexual maturity at 6 years old. 30.8cm in length, 380.7g of body mass, and a mature coefficient of 15.21%; male fish body is 27.2cm in length, body mass is 335.7g, and the mature coefficient is 10.18%. Thick lip naked lipfish must have 3043 ~ 42 158 capsules, and the relative egg amount is 7.9 to 37.2 capsules/g. Mature egg diameter (2.1 ± 0.1) mm, the number of eggs is 134.9 capsules/g; the physical and chemical factors of the spawning field are determined, cluster reproduction requires about 8 ° C water temperature and other ecological factors stimulation (altitude, water flow, bait, etc.).

The fertilized eggs of thick lip naked lip fish are oval, with large egg diameter, and (4.41 ± 0.13) mm after water absorption and swelling. At the condition of 9 ° C, 9H enters the ovary period 9h after insemination, 23h 30min enters the blastocyst period, 33H enters the original intestinal period, 71H enters the neurosomal period, 74h 30min enters the organ differentiation period, 210H begins to break the membrane, and early out, early The total length of the caravan is 9.35mm. After the membrane broke the membrane, 16D fishes began to rise.

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