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Chaetodon trifascialis : ウィキペディア英語版
Chevron butterflyfish
:''Not to be confused with ''Chaetodon trifasciatus (Melon Butterflyfish). ''See also'' Chaetodon tricinctus (Three-striped Butterflyfish) ''and'' Three-banded Butterflyfish.
:''For the Philippines Chevron Butterflyfish, see ''Chaetodon xanthurus''. "Triangulate butterflyfish" redirects here; for the triangular butterflyfishes, see ''C. baronessa'' and ''Chaetodon triangulum''
The Chevron Butterflyfish (''Chaetodon trifascialis''), also known as Triangulate Butterflyfish or V-lined Butterflyfish, is a species of butterflyfish (family Chaetodontidae) found in the Indo-Pacific from the Red Sea and East Africa to the Hawaiian and Society Islands.〔 (2008): (''Chaetodon trifascialis'' ). Version of 2008-JUL-24. Retrieved 2008-SEP-01.〕
==Description==
Adults have an elongate white body with narrow chevron markings and may be up to 18 cm (7 in) in length.〔 Juveniles have a mostly yellow tail and a broad black band extending from the rear of the dorsal fin to the rear of the anal fin. The tail pattern and the coloring of the posterior part of body changes dramatically with growth, with the tail entirely black with a thin yellow outline and the hind part of the body not differing in color from the areas further forward in adults.
With its peculiar age-dependent color and elongated outline, this species has been placed in a monotypic subgenus ''Megaprotodon''. Its closest living relatives seem to be the species of the subgenera ''Discochaetodon'' (e.g. Eight-banded Butterflyfish, ''C. octofasciatus'') and ''Tetrachaetodon'' (e.g. Mirror Butterflyfish, ''C. speculum''). These, and perhaps other subgenera, would use ''Megaprotodon'' as genus name if ''Chaetodon'' is split up.〔 (2007): Molecular phylogenetics of the butterflyfishes (Chaetodontidae): Taxonomy and biogeography of a global coral reef fish family. ''Mol. Phylogenet. Evol.'' 45(1): 50–68. (HTML abstract)〕〔 (2007): Molecular phylogeny of ''Chaetodon'' (Teleostei: Chaetodontidae) in the Indo-West Pacific: evolution in geminate species pairs and species groups. ''Raffles Bulletin of Zoology Supplement'' 14: 77-86. (PDF fulltext )〕
''Chaetodon trifascialis'' is a territorial species which occurs in semi-protected seaward and shallow lagoon reefs, closely associated with tabular and staghorn (''Acropora'') corals, the polyps and mucus of which they eat. They occur at depths ranging from 2–30 m. Adults are either seen to swim alone or (particularly in the breeding season) in pairs, while juveniles are secretive among coral branches. They are oviparous.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Chevron butterflyfish」の詳細全文を読む



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