The Stegastes pelicieri, of the order of Perciformes and family Pomacentridae (Damselfishes) is commonly known as the Mauritian Gregory. The overall body colour is brown to charcoal or blackish. It has dusky grey lips with a narrow golden margin on the pupil. The scales are blue in the centre. The pectoral fins are translucent with brown rays and the base of the uppermost ray is bright blue. Scales are ctenoid except on the ventral surface of the head where they are cycloid. It has a total of 14 dorsal spines, 14 to 16 dorsal soft rays, 2 anal spines and 14 to 15 anal soft rays.
 ‘Stegastes Pelicieri Summary Page’.
This species is present across the Indian Ocean, mostly around Mauritius and Reunion. Adults are found in rocky reefs with little coral and near crevices. Recorded depth range is between 2 to 20m. This species is usually solitary but distinct pairs form during breeding. The males guard and aerate the eggs.
The conservation status of this species has not been evaluated yet.
This species can reach a maximum recorded length of 14 cm.