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The living habits and morphological characteristics of flat-finned loach (eight-bearded fish)

2023-03-29 06:04:51 82

Gobiobotia homalopteroidea belongs to the order Cypriniformes, family Cyprinidae, subfamily Gobiobotia, and genus Gobiobotia. English name: Eight-whisker gudgeon.


Endangerment level: Endangered.


The body is long and cylindrical, the head and chest are broad, slightly flat, the abdomen is flat, and the tail stalk is flat and slender on the sides. The head is large and broad, the width of the head is greater than the height of the head, and the back of the head has small cortical ridges. The muzzle is blunt and round. The mouth is large, inferior, and broadly arcuate. The upper lip is wrinkled and the lower lip is smooth. There are 4 pairs of whiskers, 1 pair of mouth whiskers and 3 pairs of chin whiskers, slightly longer. Small eyes. There are 41-42 lateral line scales. Most of the scales on the back and side of the body have ridges, the ventral surface is exposed, and extends to part of the side of the body. The starting points of the dorsal and pelvic fins are opposite and located in the middle of the body; the pectoral fins are wide and short, and the third fin ray is the longest and prominent; the caudal fin is deeply forked. The dorsal side of the body is grayish brown, the belly is grayish white, there is a black vertical stripe on the lateral line, the dorsal fin is slightly black, and the other fins are grayish white.

The living environment is flowing water with sandy and gravelly bottoms. It moves in the lower layers of the water body and often squats on the bottom of the water to live a benthic life.


Distributed in the main branches and tributaries of the Yellow River from Lanzhou to Longzhong, Gansu. The number is very small. It was occasionally seen in the past, but it is more difficult to see now. The main reason is that this species has high requirements for living conditions, and slight interference from external factors, such as changes in water niches such as soil erosion and increased sediment content, will have a greater impact on its survival. Coupled with the damage caused by harmful fishing methods, this species, which originally had a small population, has been further reduced.


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