Also known as Black-axil Damsel, Blackfin Damsel, Goldback Damselfish.
Found singly or in small schools in clear water lagoons and seaward reefs.
They feed on algae, planktonic crustaceans, fish eggs and small invertebrates.
Length - 9cm
Depth - 6-60m
Widespread Western Central 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/5725