POMACENTRIDAE Abudefduf notatus (photo by Ukkrit Satapoomin) Abudefduf notatus (Day, 1870) Yellow-tail Sergeant D XIII, 12-14; A II, 13-14; P1 18-20; LLp 20-22. Body deep and compressed. Posterior margin of preopercle smooth. Suborbital scaled, with entire ventral margin. Teeth on jaws uniserial, incisor-like. Caudal fin forked; no conspicuous projecting spine-like rays at upper and lower edges of caudal-fin base. Color: ground color dark greenish gray; a small black spot (slightly smaller than pupil) above upper end of gill opening; 5 narrow pale bars (distinctly narrower than darker interspaces) on side of body; axil and dorsal end of pectoral-fin base black; caudal fin entirely yellow. Size: 14 cm SL. Distribution: Indo-West Pacific. Remarks: found in shallow rocky shore.