Actinopteri (ray-finned fishes) > Acanthuriformes
(Surgeonfishes) > Acanthuridae
(Surgeonfishes, tangs, unicornfishes) > Acanthurinae
Etymology: Acanthurus: Greek, akantha = thorn + Greek, oura = tail (Ref. 45335).
More on author: Richardson.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 22 - 91 m (Ref. 57178). Tropical; 22°N - 30°S, 91°E - 167°W
Western Pacific: Philippines, Indonesia and northwestern Australia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 35.6 cm FL male/unsexed; (Ref. 125599); max. published weight: 1.2 kg (Ref. 125599)
soft rays: 23 - 24. This species is characterize by the following head with small pale (rust colour in life) spots; black around peduncular spine groove of adults extending well ahead of front of spine (by a distance almost as long as spine on a 24.5 cm SL specimen); caudal fin with a very narrow white posterior margin (broader in young); body depth of adults (> 20 cm SL) 2.2.-2.5 times in SL (Ref. 9808); anterior gill rakers 16-18; posterior 21-23; when preserved, color of body brown; head spotted with bands in front of eye; tip of pectoral fin paler than the base; upper end of gill opening with a faint dark brown elongate blotch; dark brown color encircling caudal spine; caudal fin base white (Ref. 1920).
Inhabits silty coastal reefs (Ref. 9710). A good food fish (Ref. 3132).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Randall, J.E., 1956. A revision of the surgeonfish genus Acanthurus. Pac. Sci. 10(2):159-235. (Ref. 1920)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 24.3 - 28.3, mean 27.3 °C (based on 191 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02239 (0.01297 - 0.03865), b=2.96 (2.81 - 3.11), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.1 ±0.1 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low to moderate vulnerability (30 of 100).
Nutrients (Ref. 124155
): Calcium = 60.8 [19.3, 142.9] mg/100g ; Iron = 0.841 [0.326, 2.100] mg/100g ; Protein = 18.6 [17.4, 19.7] % ; Omega3 = 0.111 [0.053, 0.226] g/100g ; Selenium = 19.6 [7.0, 55.8] μg/100g ; VitaminA = 25.6 [6.5, 93.6] μg/100g ; Zinc = 2.44 [0.77, 4.69] mg/100g (wet weight);