Diagnosis: This species differs from its congeners by the following combination of characters: squamation is reduced to axillar and caudal peduncle patches, unconnected or connected with single row along lateral midline; the anterior oculoscapular canal is present, ending anteriorly with or without pore ?; the preopercular canal is present (at least in a part of the population); the pelvic frenum has a crenate rear edge; suborbital longitudinal row b anteriorly beginning below rear border of eye; anterior dorsal row m is present; oculoscapular row u absent; single papilla of interorbital row p is present, at least in a part of a the population (Ref. 55951).