Cerulean damselfish (Pomacentrus caeruleus), is a damselfish from the Western Indian Ocean to Maldives.
Short description - Dorsal spines (total): 13; Dorsal soft rays (total): 14-15; Anal spines: 2; Anal soft rays: 15 - 16.
Max length : 10.0 cm TL male/unsexed.
Adults inhabit lagoon and outer reef slopes, usually over rubble near base of reefs.
Oviparous, distinct pairing during breeding. Eggs are demersal and adhere to the substrate. Males guard and aerate the eggs.