Actinopteri (ray-finned fishes) > Acanthuriformes
(Surgeonfishes) > Acanthuridae
(Surgeonfishes, tangs, unicornfishes) > Acanthurinae
Etymology: Acanthurus: Greek, akantha = thorn + Greek, oura = tail (Ref. 45335). More on author: Herre.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 3 - 40 m (Ref. 90102), usually 3 - 30 m (Ref. 27115). Tropical; 23°C - 27°C (Ref. 27115); 19°N - 3°N
Indo-Pacific: Seychelles, Maldives, Andaman Sea, Philippines, Palau, and Line Islands Reported from Indonesia (Ref. 8631). Line Islands and East Africa (Ref. 37792).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 45.0 cm SL male/unsexed; (Ref. 48637)
soft rays: 23. Preserved color blackish brown; black above and behind lips; mouth encircled by a bluish white band; a wide white band across the chest; caudal base with a broad bluish white band; white peduncular spine. Fins black; pectoral with a white band on posterior third.
Occurs in clear seaward reefs near drop-offs (Ref. 9710, 48637). Solitary or in small groups (Ref. 90102). Minimum depth reported from Ref. 27115.
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. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 26.2 - 28.9, mean 28.5 °C (based on 94 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02344 (0.01088 - 0.05049), b=2.96 (2.79 - 3.13), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.0 ±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.).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (46 of 100) .