Blackbar Damselfish

Plectroglyphidodon dickii can reach a body length of about 9–11 cm (3.5–4.3 in). These damselfishes have a compact and stocky body, with 12 dorsal spines, 16-18 dorsal soft rays, 2 anal spines and 14-16 anal soft rays. The background coloring is mainly light brown with very visible scales and a small vertical black bar crossing the rear of the body, just ahead of the caudal area. The eyes show light blue rings and light purple markings. The dorsal, pectoral and pelvic fins are yellow orange or light brown, while the caudal fin is white, more rarely orange, with a transparent blue shaded fringe on the rear. The operculum sometimes shows a purplish tinge. Also the caudal peduncle can be white or orange.

This species is present in the Indo-Pacific, from East Africa to the Line Islands and Tuamotu, north to Japan, south to Australia and east to French Polynesia.

The genus epithet Plectroglyphidodon derives from the Greek words plektron (meaning = anything to strike with, spur), plus the suffixes glyphis (mening carved) and odous (meaning teeth).