This species is distinguished by the following characters: median predorsal scales 6-8 (usually 7); 3 scale rows on cheek, 1(6-7), 2(6-9), 3(3-5); pectoral-fin rays 13-15 (occasionally 15); terminal male usually with 2 conical teeth on side of upper dental plate (female without), with lips mainly covering the plates; caudal fin rounded in small female, with prolonged lobes in large adult. Colour of male dark reddish brown anteriorly with a bright green dot at top end of line from mouth through eye to top of opercular opening; female red on head, belly and fins, side with wavy black and white stripes, and dark green bands around the mouth and eye (Ref. 9793, 90102).