Other species of Schistura similar in morphology to the population in the Mae Khlong include S. similis Kottealt 1990 in the Mae Nam Moei in the Salween basin in Mynamar and western Thailand just northwest of the Mae Khlong basin, and S. sexcauda in the Chao Phraya basin in the central Plain of Thailand just north of the Mae Khlong basin. The Mae Nam Kwai Noi population, S. similis, and S. sexcauda all have usually 7–9 dark brown to black bars on the side, an axillary pelvic-fin lobe, a complete or nearly complete lateral line, 8½ branched dorsal-fin rays, 9 upper and 8 lower branched caudal-fin rays, an uninterrupted black basicaudal bar, and no suborbital flap