dorsal fin always terminates before caudal fin base, distance between both small; anal fin originates closer to caudal fin base than to tip of snout, nearly reaching caudal fin but never confluent; pelvic fin base slightly closer to tip of snout than to caudal fin base, reaching base of first anal fin rays; pectoral fin extend from operculum to base of first dorsal fin rays; pectoral spine slightly curved and robust, serrated only on its outer side, number of serrations increases with increasing standard length; lateral line appears as a small, white line running from posterior end of head to middle of caudal fin base; openings of secondary sensory canals clearly marked, showing a regular pattern (Ref. 248).