Also known as Alex's Damsel, Black-finned Damsel.
Found singly or in small schools, swimming above the substrate of lagoons, inshore and offshore reefs.
They feed on algae, crustaceans, and fish eggs.
Length - 9cm
Depth - 5-60m
Widespread Western Pacific
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/6920