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Vagabond butterflyfish
:''Not to be confused with the Indian Vagabond Butterflyfish (''C. decussatus'').''
The Vagabond Butterflyfish (''Chaetodon vagabundus'') is a species of butterflyfish (family Chaetodontidae). It is found in the Indo-Pacific region from the Red Sea and off East Africa as far east as the Tuamotu Islands, north to southern Japan and south to the Austral Islands.〔 (2008): (''Chaetodon vagabundus'' ). Version of 2008-JUL-24. Retrieved 2008-SEP-01.〕
It belongs to the large subgenus ''Rabdophorus'' which might warrant recognition as a distinct genus. In this group, it almost certainly is a rather close relative of the Threadfin Butterflyfish (''C. auriga'') and the Indian Vagabond Butterflyfish (''C. decussatus''). The latter might be closer to the Threadfin Butterflyfish; as ''C. vagabundus'' has yielded abnormal mtDNA 12S rRNA sequence data this is hard to say however. The ''C. auriga'' species group shares the characteristic pattern of two areas of ascending and descending oblique lines; species differ conspicuously in hindpart coloration.〔 (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 vagabundus'' are found in reef flats, lagoons and seaward reefs, and sometimes in turbid waters subject to freshwater runoff. They are omnivorous, known to feed on algae, coral polyps, crustaceans and worms. These oviparous, monogamous fish form stable pairs with both pair members jointly defending a feeding territory against other pairs. However they often accompany other species without being aggressive. By the standards of their genus, they are easily maintained in tanks.〔
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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