The dusky cherub inhabits rubble bottoms near coral reefs at depths from 1 to 40 m. It is also found around corals in lagoons and on outer reefs. Some rare colour variations of yellow-orange markings on the body have been recorded.
It feeds in small groups mainly on algae. These fish are very approachable underwater.
Also known as a many-spined angelfish, bluefin dwarf, brown pygmy angelfish or multispined angelfish