dcsimg

Diagnostic Description

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Preserved color is brown; spotted, white spots usually bordered with dark brown (may help conceal it in turbulent water that is often filled with small bubbles). Pelvic fins bright yellow. Each side of caudal peduncle with a single, sharp, forward-pointing erectile spine. Gill rakers on anterior row: 21-24; gill rakers on posterior row: 19-23.
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Recorder
Estelita Emily Capuli
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Morphology

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Dorsal spines (total): 9; Dorsal soft rays (total): 27 - 30; Analspines: 3; Analsoft rays: 23 - 26
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Trophic Strategy

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Found in turbulent waters in shallow reef areas. In atolls, commonly found schooling in surge areas. Is both a browser and a grazer (Ref. 275).
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Biology

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Occurs in surge zone of clear seaward reefs (Ref. 9710, 58302). Benthopelagic (Ref. 58302); mainly oceanic and found schooling in shallow depths over reef flats subject to surge or currents (Ref. 48637). Browses on filamentous and calcareous algae. Forms schools.
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Importance

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fisheries: commercial; aquarium: commercial
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Estelita Emily Capuli
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分布

provided by The Fish Database of Taiwan
分布於印度-西太平洋區,西起西印度洋的大洋性島嶼,東至夏威夷、馬貴斯等群島,北至日本,南至澳洲大堡礁及新加勒多尼亞。台灣東北部、南部及東部離島蘭嶼海域有產。
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臺灣魚類資料庫
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利用

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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。
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描述

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體呈卵圓形而側扁。頭小,頭背部眼前區凸出。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;尾鰭近截形或內凹。體綠褐色,體側具2-4條白色寬橫帶,其中第一條橫帶通過鰓蓋末緣,而最後兩條橫帶有時會不顯著。體側後半部具許多白色小點且延伸至背鰭軟條部及臀鰭全部;喉峽部及胸部腹面為白色。腹鰭鮮黃色;尾鰭前半部淡黃或黃色,後半部黑褐色;餘鰭均為褐色。尾柄棘溝為黃褐色。
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棲地

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主要棲息於珊瑚礁或岩礁之浪拂區,棲息深度在0-6公尺左右。身體後半部的白色小點,具有擬態的功能,會讓掠食者誤以為是浪花裡的泡沫而逃過一劫。會成一小群活動。藻食性,以絲狀藻及具石灰質的藻類為食。
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Acanthurus guttatus

provided by wikipedia EN

Acanthurus guttatus (whitespotted surgeonfish) is a marine reef tang in the fish family Acanthuridae. It is found in shallow waters on reefs in the Indo-Pacific.

Description

The whitespotted surgeonfish is deep-bodied and laterally compressed. The basic colour is grey which darkens towards the posterior and the body is liberally spotted with white. There is a band of white just behind the eye stretching from the operculum to the nape of the neck. Another white band encircles the fish just behind the yellow pelvic fins. The other fins are dark coloured except for the rather small caudal fin which is half pale yellow and half black. The dorsal fin has 9 spines and 27 to 30 soft rays. The anal fin has 3 spines and 23 to 26 rays and the pectoral fin has 17 to 20 rays. The fish grows to a maximum length of 26 cm (10 in).[3][4]

Distribution and habitat

The whitespotted surgeonfish is found in shallow water in the Indo-Pacific. Its native range extends from Mauritius to southern Japan, Indonesia and northern Australia but in 2003, it was observed off the coast of Florida in the vicinity of Palm Beach. Its main habitat is exposed reefs and rocky shores where it occurs in groups. Its spots may provide camouflage in the churned up, bubble-filled water.[3]

Biology

The whitespotted surgeonfish feeds on filamentous algae and calcareous algae. It is considered to form an important link between algae, the primary producers in the ocean, and the detrital food web in the Pacific Ocean.[2][3]

In American Samoa, breeding takes place all year round with eggs being deposited in drainage channels in the reef at dusk.[3]

References

  1. ^ Abesamis, R., Clements, K.D., Choat, J.H., McIlwain, J., Myers, R., Nanola, C., Rocha, L.A., Russell, B. & Stockwell, B. (2012). Acanthurus guttatus. The IUCN Red List of Threatened Species doi:10.2305/IUCN.UK.2012.RLTS.T177995A1515633.en
  2. ^ a b Bailly, Nicolas (2010). "Acanthurus guttatus Forster, 1801". WoRMS. World Register of Marine Species. Retrieved 2012-02-27.
  3. ^ a b c d Acanthurus guttatus, Forster 1801: Whitespotted Surgeonfish USGS. Retrieved 2012-02-27.
  4. ^ Froese, Rainer, and Daniel Pauly, eds. (2005). Acanthurus guttatus in FishBase. May 2005 version.
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Acanthurus guttatus: Brief Summary

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Acanthurus guttatus (whitespotted surgeonfish) is a marine reef tang in the fish family Acanthuridae. It is found in shallow waters on reefs in the Indo-Pacific.

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Description

provided by World Register of Marine Species
Occurs in surge zones and browses on filamentous and calcareous algae. Occasionally forms schools.
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bibliographic citation
Froese, R. & D. Pauly (Editors). (2021). FishBase. World Wide Web electronic publication. version (08/2021).
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Edward Vanden Berghe [email]
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Edward Vanden Berghe [email]