(Family):Three lowermost pectoral rays free. No barbel on lower jaw. (Genus):No spinous plate on both sides of dorsal fin base. Dorsal spines usually 11. No scales on opercular membrane. (Species):Rostral exsertion spinous and rudimentary, its length shorter than its basal width. Preocular region serrated, one of the spines longer. No supraocular spine. A triangular projection present or absent on postocular region. A preopercular spine without supplemental small spine at its base. Tip of opercular spine extending beyond cleithral spine. Posterior end of posttemporal rounded, not spinous. Orbit diameter 30〜32% of HL. Interorbital width 38〜44% of orbit diameter. No filamentous dorsal spine (in one specimen, however, it appears that 1st spine was becomming filamentous). No scale between thorax and median of abdomen. A distinct black spot present between 4th and 5th dorsal spines.