About Chaetodon rainfordi McCulloch, 1923
Chaetodon rainfordi can be distinguished from related fish species by its coloration. Its base body color is yellow, with an orange bar that has dark edges running through the eye, and a second thinner orange bar running through the base of the pectoral fin. Two blue-grey bands edged with yellow-orange are present on the body. A black spot is normally present on the caudal peduncle. Gold bands on the body are often located on each side of wider, diffuse dark bars. The dorsal, anal, and pectoral fins are all yellow. The dorsal fin has 10–11 spines and 20–22 soft rays, while the anal fin has 3 spines and 17–19 soft rays. This species reaches a maximum total length of 15 centimetres (5.9 in).
Chaetodon rainfordi is distributed in the southwestern Pacific Ocean. It occurs off southern Papua New Guinea, along the Great Barrier Reef off Queensland, south to the Solitary Islands and Surgeons Reef off Red Rock, New South Wales. It is also found off Lord Howe Island in the Tasman Sea.
This species inhabits coastal and offshore reefs at depths between 5 and 20 metres (16 and 66 ft), in areas with sparse coral growth. Juveniles live among branching corals. Chaetodon rainfordi is an obligate corallivore, feeding exclusively on coral polyps. It is an oviparous species that forms breeding pairs.
