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Pearlscale Butterfly - Black


Pearlscale Butterfly - Black
Chaetodon argentatus
Place of origin: 
Western Pacific
Tropical Japan to China Seas and Philippines, mainly common in the Okinawa region. Clear water habitats on patch reef and rubble to about 20m depth. Adults pair, but sometimes occur in small groups. Easily identified by the silvery-white colour and black markings. Hybridises with the closely related Chaetodon chrysurus and C.mertensii that are sympatric but less common. Length to 12cm.

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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