soft rays: 12 - 23. Body slender; total scutes 28 to 30; lower gill rakers strongly increasing with size of fish, about 45 at 5 or 6 cm standard length, 50 to 80 (maximum) at 6 to 10 cm. Vertical striae on scales not meeting at center, no perforations on hind part of scale. No dark spot at dorsal fin origin, no dark tips to caudal fin. Can be separated from other species by a combination of above characters.