Also known as Lyretail Damselfish, Twin Damselfish.
Found in pairs or schools over rocky bottoms of coral reefs.
They feed on zooplankton.
Length - 6.4cm
Depth - 2-14m
Widespread 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/Neopomacentrus-sororius.html