Presence of pelvic fins which do not or just reach a vertical through the pectoral fin bases; present; origin of dorsal fin above base or anterior part of pectoral fin; without dermal appendages around mouth; gill opening extending downward to at least the middle of pectoral fin base, but not reaching the lower end of pectoral fin base; head depressed; body elongated and tail compressed, with depth about 7-9% TL (Ref. 37311).