Green Sergeant

Found singly or in large schools, over shallow, outer edges, of surge gutters, and reefs.
They feed high in the water column on zooplankton.
Western Pacific - Australia, Coral Sea, New Caledonia

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.