Brief Summary
provided by EOL authors
Surgeonfishes (family Acanthuridae) are strikingly colored and patterned reef fishes. They are daytime grazers that travel in large schools, constantly moving as they snap up bits of algae. Some species have a moveable scalpel-like spine (used for defense) that folds forward into a groove on either side of the base of the tail, accounting for both the scientific and common names for the family. The Yellowfin Surgeonfish (Acanthurus xanthopterus) is a large surgeonfish (up to around 60 cm) with a distinctive yellow blotch behind and in front of the eye, pectoral fins with yellow on at least the outer third, a bluish tail (often with a whitish band at the base), dorsal and anal fins with 4 to 5 dull yellow stripes alternating with blue (the base with a pale blue band), and a black spine sheath. The caudal (tail) spine is relatively small. Adults usually occur in small to large groups and are found especially around deep offshore reefs, generally below around 20 m down to a maximum depth of about 90 m. Juveniles live in shallow protected areas. Yellowfin Surgeonfishes graze the surface of sand and rubble for soft algae. These common fish are found throughout the Indo-Pacific and tropical eastern Pacific south to KwaZulu-Natal (eastern coast of South Africa). (Randall et al. 1997; Smith 1997; King anfd Fraser 2002)
Diagnostic Description
provided by Fishbase
Body purplish gray when alive; grayish brown when preserved; a region of dull yellow in front of eye, a lesser extension posterior to lower part of eye; outer 1/3 of pectoral fin yellow, extreme distal part hyaline; dorsal and anal fins yellowish grey basally, dull yellow distally; caudal fin base whitish; caudal fin purplish. Anterior gill rakers 16-24, posterior 17-22. Caudal spine small.Description: Characterized further by having length of caudal spine 4.4-5.7 in head length; greatest depth of body 1.9-2.3 in SL (Ref. 90102).
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- Estelita Emily Capuli
Morphology
provided by Fishbase
Dorsal spines (total): 8 - 9; Dorsal soft rays (total): 25 - 27; Analspines: 3; Analsoft rays: 23 - 25
- Recorder
- Estelita Emily Capuli
Trophic Strategy
provided by Fishbase
Commonly occurs in protected deeper waters of bays & lagoons. Lives in various reef habitats, sand slopes (Ref. 48637). Juveniles inhabit shallow, protected, turbid inshore waters while adults prefer deeper areas of protected bays and lagoons, and outer reef areas. This schooling species feeds on diatoms, detritus film of sand, filamentous algae, hydroids, pieces of fish (Ref. 1602, 48637) and fleshy macroalgae (Ref. 5543). Probably the only surgeonfish that readily takes bait (Ref. 12484). Also Ref. 58534.
- Recorder
- Estelita Emily Capuli
Biology
provided by Fishbase
Live in various reef habitats, sand slopes and lagoons (Ref. 48637). Juveniles inhabit shallow, protected, turbid inshore waters while adults prefer deeper areas of protected bays and lagoons. Also in outer reef areas (Ref. 1602). Benthopelagic (Ref. 58302). Schooling species, feed on diatoms, detritus film of sand, filamentous algae, hydroids, and pieces of fish (Ref. 1602, 48637). Probably the only surgeonfish that readily takes bait (Ref. 12484).
Importance
provided by Fishbase
fisheries: minor commercial; aquarium: commercial; price category: medium; price reliability: very questionable: based on ex-vessel price for species in this family
分布
provided by The Fish Database of Taiwan
廣泛分布於印度-泛太平洋區，西起非洲東部，東至墨西哥、夏威夷及土木土群島，北至日本，南至澳洲大堡礁及新加勒多尼亞。台灣各地海域及離島均曾發現，以北部、東北部海域最多。
利用
provided by The Fish Database of Taiwan
一般以流刺網、延繩釣或潛水鏢魚法等捕獲。觀賞及食用兼具。剝皮後，煮薑絲湯，肉質鮮美。尾柄上骨質盾板非常銳利，易傷人，處理時需小心。因食物鰱之關係，可能具熱帶海魚毒。
描述
provided by The Fish Database of Taiwan
體呈橢圓形而側扁。頭小，頭背部輪廓不特別凸出。口小，端位，上下頜各具一列扁平齒，齒固定不可動，齒緣具缺刻。背鰭及臀鰭硬棘尖銳，分別具XI棘及III棘，各鰭條皆不延長；胸鰭近三角形；尾鰭彎月形，隨著成長，上下葉逐漸延長。體紫灰至褐色，常常於頭及體側出現許多深色不規則的波狀縱線；緊貼眼睛前後方各具一不規則之黃色斑塊；背鰭及臀鰭的鰭膜各具4-5條暗黃縱線及藍縱帶，基部各具一淡藍縱帶；尾鰭藍灰色，無小黑點，基部有一白橫帶；胸鰭上部2/3區域為黃色；尾柄棘溝藍黑色。
棲地
provided by The Fish Database of Taiwan
幼魚棲息於淺的岩礁區或混濁水域，成魚則棲息於較深之潟湖區和近海礁區海域，一般棲息深度在5-90公尺左右，幼魚則常出現於潮池。通常成群迴游於珊瑚礁外圍的陡崖或海溝等潮水較流通之區域。主要以絲狀藻、底藻、矽藻及魚肉碎屑等為食。
Yellowfin surgeonfish
provided by wikipedia EN
The yellowfin surgeonfish or Cuvier's surgeonfish (Acanthurus xanthopterus) is one of several marine fish that change color as they get older. This characteristic confused fish identification, and originally put the young and adults in different species. With the arrival of aquaria and later, coral reef aquaculture, specialists noticed the color transformation. Only recently have zoologists begun to understand their metamorphosis.
Description
The yellowfin surgeonfish ranges in length to 70 cm (28 in). It has eight or 9 dorsal spines, 25-27 dorsal soft rays, three anal spines, 23-25 anal soft rays, and 16-24 anterior and 17-22 posterior gill rakers.[2]
Its body is purplish gray. It has a region of dull yellow in front of its eye. The outer third of its pectoral fin is yellow, the extreme distal part is hyaline. Its dorsal and anal fins are yellowish grey basally and dull yellow distally. Its caudal fin is purplish and the caudal spine is small.[2]
Range and habitat
It lives near coral reefs at depths ranging from 5–90 m (16–295 ft). Its preferred temperatures are 24–28 °C (75–82 °F) at latitudes of 30°N to 30°S. It ranges from East Africa to the Hawaiian Islands and French Polynesia, north to southern Japan, south to the Great Barrier Reef, and New Caledonia, and in the Eastern Pacific, from the lower Gulf of California and Clipperton Island to Panama and the Galapagos Islands.[2]
Juveniles inhabit shallow, protected, turbid inshore waters, while adults prefer deeper areas of protected bays and lagoons.
Feeding
It feeds on diatoms, detritus film of sand, filamentous algae, hydroids, and pieces of fish. It is probably the only surgeonfish that readily takes bait.[2]
References
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^ Abesamis, R.; Clements, K.D.; McIlwain, J.; Myers, R.; Nanola, C.; Rocha, L.A.; Russell, B. & Stockwell, B. (2012). "Acanthurus xanthopterus". IUCN Red List of Threatened Species. 2012: e.T177989A1512937. doi:10.2305/IUCN.UK.2012.RLTS.T177989A1512937.en.
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^ a b c d Froese, Rainer; Pauly, Daniel (eds.) (2007). "Acanthurus xanthopterus" in FishBase. October 2007 version.
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Yellowfin surgeonfish: Brief Summary
provided by wikipedia EN
The yellowfin surgeonfish or Cuvier's surgeonfish (Acanthurus xanthopterus) is one of several marine fish that change color as they get older. This characteristic confused fish identification, and originally put the young and adults in different species. With the arrival of aquaria and later, coral reef aquaculture, specialists noticed the color transformation. Only recently have zoologists begun to understand their metamorphosis.
- license
- cc-by-sa-3.0
- copyright
- Wikipedia authors and editors
Description
provided by World Register of Marine Species
Juveniles inhabit shallow, protected, turbid inshore waters while adults prefer deeper areas of protected bays and lagoons. This schooling species feeds on diatoms, detritus film of sand, filamentous algae, hydroids, and pieces of fish (Ref. 1602). Generally at depths greater than 20 m (Ref. 2334). Fairly rare around Tahiti due to overfishing. Caught by handline and spearfishing.
Froese, R. & D. Pauly (Editors). (2023). FishBase. World Wide Web electronic publication. version (02/2023).
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