Pink Demoiselle

The king demoiselle inhabits coastal to outer reef crests at depths ranging from 1 to 20 meters (approximately 3 to 70 feet). It shows a preference for lagoons and sheltered reefs, particularly favoring areas with shallow sand and coral patches near reef edges, where it is abundant in northwest Australia. The species has a broad tropical Indo-Pacific distribution, ranging from the eastern Indian Ocean to the Philippines, Palau, Indonesia, New Guinea, New Britain, Solomon Islands, north to southern Japan, and south to New Caledonia and the Great Barrier Reef.

As an omnivore with algae-grazing tendencies, the king demoiselle feeds primarily on algae along with benthic invertebrates and plankton in its natural environment. This dietary flexibility makes it relatively easy to maintain in captivity, where it readily accepts meaty foods such as mysis shrimp, brine shrimp, squid, fish flesh, clams, and plant-based foods including spirulina flakes and nori.