Pectoral fin rays usually 18; back arched; with about 45 vertical scale rows; lachrymal bone with 2 or 3 spines over maxillary, first points forward, followed by 1 or by 2 close-set spines which point down and back; suborbital ridge with 4 or more spinous points, usually more than 8 or 10 points, not in a row and of various sizes; a shallow pit below front corner of eye (Ref. 10482). Colorful inside the pectoral fins, used for display (Ref. 48635).