Description

Also known as Black-backed Damsel, Blackvent Damselfish, Yellow Demoiselle.

Found singly, or in pairs, over shallow, rubble and sandy substrates, close to small reef patches in lagoons.
They feed on benthic algae.
Juveniles secretive in rubble areas.
Length - 15cm
Depth - 1-12m
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/Dischistodus-melanotus.html