Striking colouration, cannot be distinguished from its Pacific sister species (C. iomelas, GBR to Fiji).
Size : 7 cm
Habitat : In lagoons and outreef, 1-36 m. Usually in groups or large shoals at reef edges or exposed reef posts. Feeds on zooplankton in open water. Not shy.
Distribution : Read Sea and East Africa to Thailand, Java and Christmas Islands.