This species is distinguished from its congeners by the following set of characters: D XIV,13-14; A II,12; pectoral rays 19-20; tubed lateral-line scales 15-17; gill rakers 5-6 + 17-20 = 22-26; caudal fin with two spinous procurrent rays dorsally and ventrally. Colour of adult generally silvery white with a large black spot on the pectoral fin base that reaches the lower limits of the axil; juvenile's head and body entirely gunmetal to silvery-grey, overlaid with greenish blue iridescence dorsally; the iris pale blue to grey, bright metallic blue on dorsal edge; axil of pectoral fin base with large black spot; caudal peduncle greyish yellow to bright yellow posteriorly; dorsal fin bright yellow, with basal part of spinous part of fin greyish yellow in larger juveniles; anal fin bright yellow; caudal fin bright yellow basally with remainder of fin hyaline in small juveniles, the yellow area becoming more extensive to cover most of fin in larger juveniles; pectoral fins are hyaline; pelvic fins greyish hyaline, edged in pale blue (Ref. 120429).