Schistura leukensis Kottelat 2000

Snout profile straight; anterior nostril pierced on front side of a flap; processus dentiformis present; usually no median notch in upper lip, lower lip with a median incision; lateral line complete; anus about 1-2 eye-diameters in front of anal-fin origin; 8.5 branched dorsal-fin rays; 5.5 branched anal-fin rays; caudal fin emarginate, with 8+8 branched rays; axillary pelvic lobe present; body depth 14.9-16.8 %SL; caudal peduncle length 14.5-16.4 %SL, depth 12.7-13.1 %SL, 1.15-1.30 times in length; top of head dotted; body with 10-13 bars, as wide as or slightly wider than interspaces, somewhat wider anteriorly than posteriorly, quite regularly set although some may be incomplete or fused; black bar at caudal-fin base complete, usually with anterior and posterior projections along dorsal and ventral midlines; dorsal fin with two conspicuous black blotches along base, encircling a paler round area; caudal fin bright red in life (Ref. 36949).

Occurs in slow current at the time of collection, but very fast flowing water over smooth basaltic rocks in the rainy season (Ref. 36949).

Schistura leukensis is a species of ray-finned fish, a stone loach in the genus Schistura. It has only been recorded from a single river, a tributary of the Mekong in Laos. This river has been affected by damming upstream of this species' main habitat and it is unknown how this has impacted the population. Other human activities such as deforestation, agriculture, siltation and pollution may have also had effects on this species.