Also known as Blackcap Damsel, Bluehead Damsel, Bluehead Demoiselle, Blue-headed Damsel, Rolland's Damsel.
Found singly or in small schools amongst coral and rocks of protected harbours, lagoons, inner and outer reef slopes.
They feed on zooplankton.
Length - 7.5cm
Depth - 2-35m
Widespread Eastern Indian Ocean
Damselfish are egg layers.
First they clear a site ready for a nest, then engage in a mating dance with rapid swimming and fin movements, during this time the males will often turn a shade or two darker and may display white blotches. Spawning occurs at dawn. Ref: https://www.fishbase.se/summary/5486