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
Western Indian Ocean from the tropical east African coast to Mauritius, but some variation between north and south of their range. Northern fish have much more black over the posterior part of the body. Occurs on deep reefs, adults usually at depths over 40m, but juveniles more shallow. Closely related to Chaetodon guentheri and differs primarily in colour, having black on the posterior part of the body. The area of black appears to be highly variable and individuals feeding on the bottom often turn grey on the normally white areas. Length to 14cm.