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Diagnostic Description

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Description: Body elongate; color is generally white with narrow chevron markings. 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. Tail pattern and posterior part of body changes dramatically with growth (Ref. 48636). Snout length 2.8-3.3 in HL. Body depth 1.7-2.2 in SL (Ref. 90102).
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Recorder
Susan M. Luna
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Life Cycle

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Distinct pairing (Ref. 205).
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Morphology

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Dorsal spines (total): 13 - 15; Dorsal soft rays (total): 14 - 16; Anal spines: 3 - 5; Analsoft rays: 13 - 15
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Trophic Strategy

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Both males and females hold separate territories, which are sometimes adjacent to each other. Occur in shallow lagoon and semi-protected seaward reefs. Closely associated with tabular and staghorn Acropora corals upon which it feeds on their polyps and mucus. Solitary or in pairs.
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Biology

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Territorial species which occur in shallow lagoon and semi-protected seaward reefs (Ref. 48636). Benthopelagic (Ref. 58302). Closely associated with tabular and staghorn Acropora corals upon which they feed on their polyps and mucus. Solitary or in pairs. Juveniles secretive among coral branches (Ref. 48636). Oviparous (Ref. 205). Form pairs during breeding (Ref. 205).
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Estelita Emily Capuli
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Importance

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aquarium: commercial
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分布

provided by The Fish Database of Taiwan
分布於印度-太平洋區,自紅海及非洲東部至夏威夷及社會群島。台灣各地岩礁及珊湖礁海域皆可見其蹤跡。
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臺灣魚類資料庫
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利用

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一般以潛水方式捕捉。為觀賞魚類,無食用經濟價值。
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描述

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體高而呈橢圓形;頭部上方輪廓平直,鼻區處凹陷。吻中長,突出。前鼻孔具鼻瓣。前鰓蓋緣具細鋸齒;鰓蓋膜與峽部相連。上下頜齒前端齒成束。體被大型鱗片,菱形;側線向上陡昇至背鰭第X-XI棘下方而下降至背鰭基底末緣下方。背鰭單一,硬棘XIV,軟條15;臀鰭硬棘IV,軟條15。體灰藍色,或較淡色;體側具14-20條藍色“ㄑ”形紋;頭部具與眼徑約同寬之黑眼帶,向下延伸至腹緣。成魚背、臀鰭黃至黃橙色,軟條部後緣各具黑線紋;腹鰭黃色或淡色;尾鰭基部黑色,後部黃色,另具黑緣。幼魚背鰭軟條後部至臀鰭後部軟條具一黑色寬帶;尾鰭基部黃色,後部白色,中央具一窄黑紋;體側前後另具2個長卵形白色斑點。
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棲地

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棲息於淺的潟湖及面海的珊瑚礁區。有時單獨或成對出現,喜歡活動於鹿角珊瑚或桌狀軸孔珊瑚上,以其珊瑚蟲及黏液為食。具領域行為。
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Chevron butterflyfish

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The chevron butterflyfish (Chaetodon trifascialis), also known as chevroned butterflyfish, triangulate butterflyfish or V-lined butterflyfish, is a species of marine ray-finned fish, a butterflyfish belonging to the family Chaetodontidae. It has a wide Indo-Pacific distribution.

Chevron butterflyfish should not be confused with melon butterflyfish (Chaetodon trifasciatus), three-striped butterflyfish (Chaetodon tricinctus), or three-banded butterflyfish (Chaetodon robustus).

Description

The chevron butterflyfish has an relatively elongate pale body marked with dark vertical chevron markings. It has a black tail with yellow posterior margin. There is a black band with pale edges which runs through the eye. The juveniles have a black vertical band which runs from the rear of the dorsal fin, over the rear of the body to the rear of the anal fins and they have a yellow tail base and pectoral fins.[3] The dorsal fin contains 13-15 spines and 14-16 soft rays while the anal fin has 3-5 spines an 13-15 soft rays. This species attains a maximum total length of 18 centimetres (7.1 in).[2]

A juvenile Chevron butterflyfish, demonstrating the colour difference compared to adult fish.

Distribution

The Chevron butterflyfish has a wide Indo-Pacific distribution. It is found in the western Indian Ocean along the coast of East Africa from the Egypt south to South Africa and across the Indian Ocean including the Indian Ocean islands and into the Pacific Ocean to the Line Islands, Johnston Atoll and the Howland and Baker Islands in the central-west Pacific. It extends north to southern Japan and south to Lord Howe Island and Rapa Iti.[1] In Australia this species can be found from the Houtman Abrolhos to Beagle Reef, as well as the Rowley Shoals and Scott Reef in Western Australia, it is then found in the northern Great Barrier Reef off Queensland, on some reefs in the Coral Sea, as far south as Arrawarra Headland near Coffs Harbour in New South Wales. It can also be found around the Australian Indian Ocean territories of Cocos (Keeling) Islands and Christmas Islands.[4]

Habitat and biology

The chevron butterflyfish 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.[2]

Systematics

The chevron butterflyfish was first formally described in 1825 by the French naturalists Jean René Constant Quoy and Joseph Paul Gaimard with the type locality given as Guam.[5] This species has the unusual features of age-dependent colour and anelongated outline, and this has led to this species being placed in a monotypic subgenus Megaprotodon. Its closest living relatives seem to be the species of the subgenera Discochaetodon (e.g. eightband 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.[6][7]

References

  1. ^ a b Carpenter, K.E.; Pratchett, M. (2010). "Chaetodon trifascialis". IUCN Red List of Threatened Species. 2010: e.T165712A6098323. doi:10.2305/IUCN.UK.2010-4.RLTS.T165712A6098323.en. Retrieved 19 November 2021.
  2. ^ a b c Froese, Rainer; Pauly, Daniel (eds.) (2019). "Chaetodon trifascialis" in FishBase. December 2019 version.
  3. ^ "Chaetodon trifascialis". Reef Life Survey. Retrieved 10 December 2020.
  4. ^ Dianne J. Bray. "Chaetodon trifascialis". Fishes of Australia. Museums Victoria. Retrieved 10 December 2020.
  5. ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Chaetodon". Catalog of Fishes. California Academy of Sciences. Retrieved 10 December 2020.
  6. ^ 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.
  7. ^ 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 from the original (PDF) on 2007-08-11. Retrieved 2008-09-01.

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Chevron butterflyfish: Brief Summary

provided by wikipedia EN

The chevron butterflyfish (Chaetodon trifascialis), also known as chevroned butterflyfish, triangulate butterflyfish or V-lined butterflyfish, is a species of marine ray-finned fish, a butterflyfish belonging to the family Chaetodontidae. It has a wide Indo-Pacific distribution.

Chevron butterflyfish should not be confused with melon butterflyfish (Chaetodon trifasciatus), three-striped butterflyfish (Chaetodon tricinctus), or three-banded butterflyfish (Chaetodon robustus).

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Description

provided by World Register of Marine Species
This territorial species occurs in shallow lagoon and semi-protected seaward reefs. Closely associated with tabular and staghorn @Acropora@ corals upon which it feeds on their polyps and mucus. Solitary or in pairs.

Reference

Froese, R. & D. Pauly (Editors). (2023). FishBase. World Wide Web electronic publication. version (02/2023).

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