172.71.178.167 at 11:54, 7 October 2022

2022-10-07T11:54:25Z

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{{Short description|Species of fish}}
{{Speciesbox
| image = A, chagosensis 3.jpg
| status = LC
| status_system = IUCN3.1
| status_ref = <ref name = IUCN>{{cite iucn | author1 = Myers, R. | author2 = Rocha, L.A. | author3 = Allen, G. | name-list-style = amp | year = 2017 | title = ''Amphiprion chagosensis'' | volume = 2017 | page = e.T188507A1885502 | doi = 10.2305/IUCN.UK.2017-2.RLTS.T188507A1885502.en }}</ref>
| taxon = Amphiprion chagosensis
| authority = ([[Gerald R. Allen|Allen]], 1972)
}}
[[File:A, chagosensis 1.jpg|thumb|A. chagosensis, with Stichodactyla mertensii, Mertens' carpet sea anemone]]

'''''Amphiprion chagosensis''''', the '''Chagos anemonefish''', is a [[marine fish]] belonging to the [[family (biology)|family]] [[Pomacentridae]], the [[clownfish]]es and [[damselfish]]es. It is named for the [[Chagos Archipelago]] in the [[Indian Ocean]] and it is [[endemic]] to the archipelago. The original specimens were collected at [[Diego Garcia]] Atoll, Chagos Archipelago.{{r|FieldGuide}}

==Characteristics of anemonefish==
{{main|Amphiprioninae|l1=Amphiprioninae (anemonefish)}}
'''Clownfish''' or '''anemonefish''' are [[fish]]es that, in the wild, form [[symbiosis|symbiotic]] [[Mutualism (biology)|mutualism]]s with [[sea anemone]]s and are unaffected by the stinging tentacles of the host anemone, see {{slink|Amphiprioninae|Symbiosis and mutualism}}. The sea anemone protects the clownfish from predators, as well as providing food through the scraps left from the anemone's meals and occasional dead anemone tentacles. In return, the clownfish defends the anemone from its predators, and parasites.<ref name="natgeowild">{{cite web|url=http://animals.nationalgeographic.com/animals/fish/clown-anemonefish/|title=Clown Anemonefish|publisher=National Geographic Society|work= Nat Geo Wild : Animals|accessdate=2011-12-19}}</ref> Clownfish are small-sized, {{convert|10|-|18|cm}}, and depending on species, they are overall yellow, orange, or a reddish or blackish color, and many show white bars or patches. Within species, there may be color variations, most commonly according to distribution, but also based on sex, age and host anemone. Clownfish are found in warmer waters of the [[Indian Ocean|Indian]] and [[Pacific Ocean|Pacific]] oceans and the [[Red Sea]] in sheltered [[reef]]s or in shallow [[lagoon]]s.

In a group of clownfish, there is a strict [[dominance hierarchy]]. The largest and most aggressive fish is female and is found at the top. Only two clownfish, a male and a female, in a group reproduce through [[external fertilization]]. Clownfish are [[Sequential hermaphroditism|sequential hermaphrodites]], meaning that they develop into males first, and when they mature, they become females.

==Description==
Adults are light brown with two white bars with dark edging encircling the body. All fins are dusky brown.{{r|FieldGuide}} They have 10-11 dorsal spines, 2 anal spines, 15-17 dorsal soft rays and 13-14 anal soft rays.{{r|Fishbase}} They reach a maximum length of {{convert|10|cm|in|frac=4|abbr=on}}.{{r|FieldGuide}}

===Color variations===
None known.

===Similar species===
The Chagos anemonefish is mainly distinguished by location, with similar species mostly having a geographic separation, with ''[[Amphiprion akindynos|A. akindynos]]'' being found on the [[Great Barrier Reef]] and [[Coral Sea]] and ''[[Amphiprion allardi|A. allardi]]'' in [[East Africa]]. ''[[Amphiprion bicinctus|A. bicinctus]]'' is found in the [[Red Sea]] but has an overlapping distribution at Chagos. ''A. chagosensis'' has a narrower headbar and a whiteish caudal fin. Specimens can also be distinguished by differences in predorsal [[scalation]].{{r|FieldGuide}}
<gallery widths="180px" heights="180px" perrow="4">
Image:A, chagosensis 2.jpg|A. chagosensis, with Macrodactyla doreensis, long tentacle anemone
Image:Amphiprion akindynos RLS.jpg|''[[Amphiprion akindynos|A. akindynos]]'' (Barrier Reef anemonefish)
Image:Amphiprion allardi in the UShaka Sea World 1038.jpg|''[[Amphiprion allardi|A. allardi]]'' (Allard's anemonefish).
Image:Amphiprion bicinctus by Patryk Krzyzak.jpg|''[[Amphiprion bicinctus|A. bicinctus]]'' (Two-band anemonefish)
</gallery>

==Distribution and habitat==
''A. chagosensis'' is found only in the Chagos Archipelago.{{r|FieldGuide}}

===Host anemones===
Little is known about the specific host anemone species with which ''A. chagosensis'' associates,{{r|FieldGuide}} however it has been photographed in association with:

*''[[Bubble-tip anemone|Entacmaea quadricolor]]'' Bubble-tip anemone
*''[[Heteractis magnifica]]'' magnificent sea anemone {{r|CCT}}
*''[[Macrodactyla doreensis]]'' long tentacle anemone
*''[[Stichodactyla mertensii]]'' Mertens' carpet sea anemone

==References==
{{Reflist|refs=
<ref name="FieldGuide">{{cite book|last=Fautin|first=Daphne G.|author2=Allen, Gerald R. |title=Field Guide to Anemone Fishes and Their Host Sea Anemones |publisher=[[Western Australian Museum]] |year=1992|url=http://jjgeisler.com/reeftank/anemones/ |isbn=978-0-7309-5216-9|pages=68}}</ref>
<ref name="Fishbase">{{FishBase | genus = Amphiprion |species = chagosensis | month = January | year = 2011}}</ref>
<ref name="CCT">{{cite web|url=http://chagos-trust.org/galleries/images?page=0%2C1| title=Images Chagos |publisher=Chagos Conservation Trust |accessdate=2 September 2015}}</ref>
}}

==External links==
{{commons category|Amphiprion chagosensis}}
{{Wikispecies|Amphiprion chagosensis}}
* {{ITIS |id=615178 |taxon=Amphiprion chagosensis |accessdate=30 January 2006}}
* {{WRMS species|212776|''Amphiprion chagosensis''| Allen, 1972}}

{{Taxonbar|from=Q1058817}}

[[Category:Amphiprion|chagosensis]]
[[Category:Fish described in 1972]]
[[Category:National Symbols Of the Independent Republic of Chagossia Nation-Island State]]

Amphiprion chagosensis - Revision history

172.71.178.167 at 11:54, 7 October 2022