The species is characterised with dark brown body without lines on body or spots on head;
horizontal black band behind upper gill opening; elongate purple band present anterior to dorsal origin;
caudal fin brown and outer third of pectoral fin pale
Size
Maximum length: 30.0 cm (TL), common length: 15-20 cm (TL)
Diet
Feed mainly on benthic algae and small invertebrates.