This species is distinguished from its congeners by the following set of characters: one Canestrini scale on the pectoral fins of males, triangular in shape and with roundish outer border; branched fin rays of anal-fin usually 5 1/2, dorsal-fin 6 1/2, caudal fin 14; caudal fin base with no characteristic spots, but pale deeper pigmentation layer, irregular in shape, sometimes defined; scales on the body very small and visible only under magnification (Ref. 123403).