The members of the family Chaetodontidae, popularly know as butterflyfishes, coralfishes and bannerfishes. Most species of butterflyfish live in the warm tropical seas of the Indo-Pacific (about 90%) with the remainder in the Atlantic. Only a few species are found in subtropical waters, bordering onto subtemperate zones. The butterflyfish have a highly compressed body in which the back is raised , forming an elongate-oval to near circular shape in some; a small protactible mouth with brush-like teeth in the jaws; a continuous dorsal fin with strong and sharp spines in the anterior section, followed by a large-surface soft part; an anal fin mirroring the soft part of the dorsal fin , headed by 3-5 strong spines, of which the 2nd is often greatly enlarged.
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Place of origin:Western Indian Ocean
Widespread throughout most of the Indo-Pacific and Red Sea. Slight differencesin colour between the Red Sea population and that of the Indo-Pacific. Usually a common species found from inshore to outer reef habitats. Juveniles often in harbours and estuaries. Adults form pairs in most areas, but in some oceanic locations this species may school. Readily identified by its white body with the dusky chevron and two way diagonal lines on the body, and large yellow region over the rear part and fins. Juveniles have a black bar over the head that hides the eye and an eye-sized black spot on the soft dorsal fin. The head band fades aobve the eye in adults and in the Red Sea population the dorsal fin spots fade. Length to 23cm.