It is a species of emperor fish between 30-50 cm, olive-green in colour, becoming paler toward the belly. It has a characteristic large blotch on the sides. It is dark and elliptical, located directly under the lateral line. This blotch often has a yellow edge. There are occasionally pale blue dots around each nostril and bordering the lower rim of the eyes. The caudal fin is reddish or orange in colour. The pelvic, dorsal, and pectoral fins are all pinkish to white.The mouth is somewhat protractile with thick lips. Lankayan Island, shoreline.
''Lethrinus harak'', common names the thumbprint emperor and blackspot emperor, is a species of emperor fish.