This species is distinguished by the following set of characters: absence of spiny tubercles or

fleshy papillae on body; anterior three mandibular pores each with a barbel-like tube; interorbital and suborbital pores are usually absent; opercular flap rounded; ventral disk with many papillae; caudal-fin is relatively short, 21.0-30.5% of SL (Ref. 115553).