Diagnosis: flat and asymmetric body; eyes located on right side of head, except in reversed individuals; preopercle covered by skin and opercle entirely scaled; mouth small, more or less arched and inferior; dorsal and anal fins lacking spinous rays and separated from caudal fin; dorsal fin originating almost at anterior end of snout; pectoral fins present; lateral line straight, anteriorly prolonged into supratemporal line describing an arch above eyes; body covered with ctenoid scales (Ref. 57416).

Description: pectoral fin on blind side as well developed as that of eyed side; anterior nostril on blind side expanded into a rosette with extensively ciliate outer margin, posterior nostril close to anterior one (Ref. 57416).

Colouration: eyed side more or less dark brown, covered with more or less dark specks and with three blackish eyespots regularly spaced along lateral line; dorsal and anal fins of same colour as body; pectorals with black spot towards tips; blind side whitish (Ref. 57416).