Distinctive Characters: Dorsal fin with 13 spines and 12-14 rays. Anal fin with 2 spines and 12-14 rays. Pectoral rays 17. Body depth 2.4-2.6 in standard length. Body compressed. Preopercle scaled and serrated. Pelvic fin long. Dorsal and anal fin rays elongated. Caudal lobes pointed.
Colour: Bluish-green, ligher below. Scales on the head with a yellow small dot. A black blotch on hind border of opercle. Pelvic and pectoral fin hyaline, caudal fin dusky.
Habitat and Biology: Generally found around coral outcrops, frequently in sandy lagoons at depths up to 16 m. Occurs in small to large groups. Feeds on plankton and filamentous algae.
Distribution: Tropical Indo-Pacific.
Remarks: Pomacentrus pavo is superficially similar in appearance to Chromis viridis (see page 238). However, it can be distinguished by its more elongate shape, and the small dark spot on the back of opercle. Occasionally appears in livebait catches.