Nanla

Mystacoleucus lepturus is a riverine cyprinid known only from the upper Mekong basin in southern China, Laos and Thailand. It favours clear, well-oxygenated running water over sand or gravel. The body is relatively slender, with a black margin on the dorsal fin and many crescent-marked scales. Records from Vietnam and Hainan Island refer to other species. Like all Mystacoleucus it has a forward-pointing predorsal spine that can snag in a net.