Luciocyprinus langsoni Vaillant

The body is long and stick-shaped, slightly flattened behind the dorsal fin, and the abdomen is round and without edges.

15 specimens were measured, with a body length of 78-346mm, collected from Longzhou, Baise, Liujiang in Guangxi and Buyuanjiang and Yangzonghai in Yunnan.
The body is long and similar to that of a mullet, in the shape of a round rod, slightly flattened laterally after the dorsal fin, and rounded and without edges on the belly. The head is relatively long, its length is longer than the head height, and the snout is pointed and conical. The mouth is terminal, the mouth fissure is very deep, almost horizontal, the upper and lower jaws are almost equal in length, and the end of the upper jaw reaches or exceeds the vertical line of the front edge of the eye; the lips are relatively thick, tightly wrapped around the outer surface of the jaws, and there is a protrusion on the inner side of the mandibular joint, which is inlaid with the depression of the upper jaw; the posterior lip groove extends forward to the chin and is interrupted. The snout skin ends at the base of the upper lip, and

In China, it is distributed in the Xijiang and Nanpanjiang river systems.