Diagnostic Description
provided by Fishbase
Description: The sides are with a pattern of alternating cream and grey-brown to purplish chevron-shaped narrow bars. Three dark bars on the head, including one running across the eye (Ref. 1602). Snout length 2.6-3.0 in HL. Body depth 1.2-1.5 in SL (Ref. 90102).
Life Cycle
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Distinct pairing (Ref. 205). Monogamous mating is observed as both obligate and social (Ref. 52884).
Morphology
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Dorsal spines (total): 11 - 12; Dorsal soft rays (total): 23 - 26; Analspines: 3; Analsoft rays: 20 - 22
Trophic Strategy
provided by Fishbase
Occur in lagoon and seaward reefs. Feed exclusively on the polyps of the tubular Acropora corals. Swim in pairs and are territorial.
Biology
provided by Fishbase
Occurs in lagoon and seaward reefs. Feeds exclusively on the polyps of the tubular Acropora corals. Swims in pairs and are territorial. Oviparous (Ref. 205). Form pairs during breeding (Ref. 205).
- Recorder
- Estelita Emily Capuli
Importance
provided by Fishbase
aquarium: commercial
- Recorder
- Estelita Emily Capuli
分布
provided by The Fish Database of Taiwan
分布於印度-西太平洋區，印尼至斐濟，北至南日本，南至新加勒多尼亞，包括澳洲及密克羅尼西亞群島等水域。台灣分布於南部、東部、綠島、蘭嶼及澎湖海域。
利用
provided by The Fish Database of Taiwan
一般以潛水方式捕捉。為觀賞魚類，無食用經濟價值。在水族箱內，幼魚較易馴餌，成魚則難。
描述
provided by The Fish Database of Taiwan
體高而呈卵圓形；頭部上方輪廓平直。吻尖，但不延長為管狀。前鼻孔具鼻瓣。前鰓蓋緣具細鋸齒；鰓蓋膜與峽部相連。兩頜齒細尖密列，上下頜齒約4列。體被中大型鱗片；側線向上陡昇至背鰭第IX-X棘下方而下降至背鰭基底末緣下方。背鰭單一，硬棘XI-XII，軟條23-26(通常為25)；臀鰭硬棘III，軟條20-22。體灰藍色，體側具有約11條呈「ㄑ」狀的垂直紋；頭部另具三條黑色鞍狀帶，第一條在吻部，第二條為眼帶，眼帶窄於眼徑，但在眼下方較寬，且向後延伸達腹鰭前緣，第三條由背鰭硬棘後方經鰓蓋至腹鰭後緣，上述三條黑色帶間為銀白色。背鰭軟條後緣及臀鰭軟條後緣為藍黑色；尾鰭後端具白緣。
棲地
provided by The Fish Database of Taiwan
棲息於潟湖及面海的礁區。主要覓食鹿角珊瑚的水螅蟲。成對生活，具領域性。
Eastern triangle butterflyfish
provided by wikipedia EN
The eastern triangle butterflyfish (Chaetodon baronessa), also known as the baroness butterflyfish, is a species of marine ray-finned fish, a butterflyfish belonging to the family Chaetodontidae. It is found in the central Indo-West Pacific region from the Cocos-Keeling Islands and Indonesia in the eastern Indian Ocean to Fiji and Tonga, north to southern Japan, south to New Caledonia and New South Wales in Australia.[2][3]
Description
It grows to a maximum of 16 cm long.The body has a pattern of alternating cream and grey-brown to purple chevron-shaped bars. There are three dark bars on the head, including one running across the eye.[2]
Habitat and behaviour
The eastern triangle butterflyfish is found in seaward and lagoon coral reefs. They usually swim around in pairs and are territorial. This species feeds exclusively on the polyps of the tubular Acropora corals.[2]
Phylogeny
The triangle butterflyfish (C. triangulum) is its western sister species, replacing C. baronessa in the Indian Ocean. The triangle butterflyfishes and the hooded butterflyfish (C. larvatus) form the subgenus Gonochaetodon. If Chaetodon is split up as some researchers propose, this group might go into Megaprotodon as other high-backed and square-bodied species, but its exact relationships are still not well known.[4][5]
References
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^ Rocha, L.A.; Pyle, R.; Myers, R.F.; Craig, M.T.; Pratchett, M. (2010). "Chaetodon baronessa". IUCN Red List of Threatened Species. 2010: e.T165692A6093453. doi:10.2305/IUCN.UK.2010-4.RLTS.T165692A6093453.en. Retrieved 20 November 2021.
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^ a b c d Froese, Rainer; Pauly, Daniel (eds.) (2019). "Chaetodon baronessa" in FishBase. December 2019 version.
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^ "Eastern Triangle Butterflyfish Chaetodon baronessa Cuvier 1829". EoL. National Museum of Natural History. Retrieved 9 December 2020.
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^ Fessler, Jennifer L.; Westneat, Mark W (2007). "Molecular phylogenetics of the butterflyfishes (Chaetodontidae): Taxonomy and biogeography of a global coral reef fish family". Molecular Phylogenetics and Evolution. 45 (1): 50–68. doi:10.1016/j.ympev.2007.05.018.
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^ Hsu, Kui-Ching; Chen, Jeng-Ping & Shao, Kwang-Tsao (2007). "Molecular phylogeny of Chaetodon (Teleostei: Chaetodontidae) in the Indo-West Pacific: evolution in geminate species pairs and species groups" (PDF). Raffles Bulletin of Zoology Supplement. 14: 77–86. Archived 2007-08-11 at the Wayback Machine
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Eastern triangle butterflyfish: Brief Summary
provided by wikipedia EN
The eastern triangle butterflyfish (Chaetodon baronessa), also known as the baroness butterflyfish, is a species of marine ray-finned fish, a butterflyfish belonging to the family Chaetodontidae. It is found in the central Indo-West Pacific region from the Cocos-Keeling Islands and Indonesia in the eastern Indian Ocean to Fiji and Tonga, north to southern Japan, south to New Caledonia and New South Wales in Australia.
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- copyright
- Wikipedia authors and editors
