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Acanthuriformes (Surgeonfishes) >
Acanthuridae (Surgeonfishes, tangs, unicornfishes) > Acanthurinae
Etymology: Acanthurus: Greek, akantha = thorn + Greek, oura = tail (Ref. 45335).
More on author: Linnaeus.
Issue
Planes and Fauvelot (2002) studied Acanthurus triostegus over its vast range and published in the journal Evolution and they did not recognize Acanthurus triostegus sandvicensis as a species. FishBase follows Randall, 1956 with A. sandvicensis as a subspecies (synonym) of A. triostegus.
Environment: milieu / climate zone / نطاق العمق / distribution range
البيئة
بحري مرتبطة بالشعاب; نطاق العمق 0 - 90 m (Ref. 9710), usually 0 - 90 m (Ref. 27115). Tropical; 26°N - 36°S, 25°E - 85°W (Ref. 57245)
Indo-Pacific: throughout the region except for the seas around the Arabian Peninsula. Eastern Pacific: lower Gulf of California to Panama, including the Revillagigedo, Cocos, Clipperton, and Galapagos islands.
Length at first maturity / الحجم / وزن / العمر
النضج: Lm 8.8 range ? - ? cm
Max length : 27.0 cm TL ذكر/ مختلط الجنس; (Ref. 3145); common length : 17.0 cm TL ذكر/ مختلط الجنس; (Ref. 9267)
الأشواك الظهرية (المجموع) : 9; الأشعة الظهرية الناعمة (المجموع) : 22 - 26; شوكة شرجية: 3; أشعه شرجية لينه: 19 - 22. Body olivaceous gray, with 4 vertical stripes (1 stripe on head across the yellow eye; 1 on caudal peduncle); shading to white ventrally, often with a sharp line of demarcation. Sharp, forward-pointing, erectile spine on each side of caudal peduncle which folds down into a groove. Scales minute. Teeth with denticulations on sides and top. Gill rakers 18-22 in anterior row, 19-24 in posterior row.
Body shape (shape guide): short and / or deep; Cross section: compressed.
Adults occur in lagoon and seaward reefs with hard substrate; young abundant in tide pools (Ref. 3145, 48637). Benthopelagic (Ref. 58302). Often feeding near freshwater run-offs where certain algae grow on rocks that are grazed (Ref. 48637). Occasionally form schools; feed on filamentous algae in large aggregations. During spawning, clouds of eggs and sperm are preyed upon by eagle rays which are often present during spawning. Form spawning aggregations (Ref. 27825). Size of metamorphosis from post-larva stage to juvenile is 3.2 cm (Ref. 9267). Utilized as a food fish (Ref. 7364). Minimum depth reported taken from Ref. 27115.
Form spawning aggregations (Ref. 27825).
Randall, J.E., 1956. A revision of the surgeonfish genus Acanthurus. Pac. Sci. 10(2):159-235. (Ref. 1920)
IUCN Red List Status (Ref. 130435: Version 2025-1)
خطر للأنسان
Reports of ciguatera poisoning (Ref. 4690)
استخدامات بشرية
مصائد: تجاري; حوض مائي: تجاري
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Preferred temperature (مرجع
123201): 23.4 - 28.9, mean 27.6 °C (based on 2614 cells).
Phylogenetic diversity index (مرجع
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02455 (0.02033 - 0.02964), b=2.96 (2.92 - 3.00), in cm total length, based on LWR estimates for this species (Ref.
93245).
مستوى غذائي (مرجع
69278): 2.8 ±0.35 se; based on food items.
Generation time: 3.1 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
المرونه (مرجع
120179): وسيط, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 1.4-4.4 سنة (K=0.35; tm=1-2).
Fishing Vulnerability (Ref.
59153): Low vulnerability (16 of 100).
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Climate Vulnerability (Ref.
125649): Low to moderate vulnerability (29 of 100).
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Nutrients (Ref.
124155): Calcium = 71.8 [30.1, 215.7] mg/100g; Iron = 0.884 [0.331, 2.244] mg/100g; Protein = 18.5 [17.4, 19.6] %; Omega3 = 0.128 [0.057, 0.283] g/100g; Selenium = 23.5 [8.3, 74.2] μg/100g; VitaminA = 32.8 [8.6, 116.6] μg/100g; Zinc = 2.55 [0.81, 4.65] mg/100g (wet weight);
