The Live Marine Resources of the Western Central Pacific, Vol.5(FAO, 2001)
Body slightly elongate, and moderately compressed. Chin with 2 moderately long slender barbels, reaching beyond rear edge of preopercle. Snout moderate; dorsal profile of head convex; mouth small, maxilla nearly or just reaching a vertical at posterior nostril; posterior end of maxilla evenly convex; a single row of well-spaced, stout, conical teeth in jaws; no teeth on roof of mouth. First gill arch with 6 or 7 gill rakers on upper limb, 20 to 23 on lower limb (total 26 to 30). Two well-separated dorsal fins, the first with VIII spines, the second fin with 9 soft rays; first dorsal-fin spine very short; longest dorsal-fin spine 1.45 to 1.75 times in head length; last ray of second dorsal and anal fins slightly longer than penultimate ray; anal fin with I spine and 6 soft rays; pectoral-fin rays 15 to 17 (usually 16). Lateral-line scales 27 or 28; 3 rows of scales between dorsal fins; 8 or 9 rows of scales along upper part of caudal peduncle. Body brownish yellow to light red, the edges of the scales darker, shading to silvery white below; centres of scales of back with a pale blue to pearly spot; a small reddish brown spot on upper side of body of adults just below seventh and eighth lateral-line scales; faint iridescent blue lines extending dorsoposteriorly and ventroanteriorly from eye, and often a parallel one on cheek and snout below eye; second dorsal and anal fins with faint pale blue to pink lines, alternating with yellowish.
Occurs singly or in small groups, over muddy, sandy, rubble, or seagrass bottoms of lagoon and seaward reefs, usually below 20 m.
Widely distributed in tropical and subtropical waters of Indo-Pacific from Red Sea and East Africa to southern Japan and Lord Howe Island; throughout Micronesia. It is common in waters around Taiwan.