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Acanthurus bahianus  Castelnau, 1855

Ocean surgeon
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Acanthuridae (Surgeonfishes, tangs, unicornfishes) > Acanthurinae
Etymology: Acanthurus: Greek, akantha = thorn + Greek, oura = tail (Ref. 45335).   More on author: Castelnau.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; reef-associated; depth range 2 - 40 m (Ref. 7345), usually 2 - 25 m (Ref. 27115).   Tropical; 21°C - 25°C (Ref. 27115); 43°N - 33°S, 98°W - 13°W

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Western Atlantic: Massachusetts, USA and Bermuda southward to the Gulf of Mexico (except in the northeast) and Brazil. Eastern Atlantic: Ascension and St. Helena islands (Ref. 7345) off Angola (Ref. 26938). A recent record from Seychelles is probably a locality error (Ref. 13442).

Length at first maturity / Size / Weight / Age

Maturity: Lm 15.5, range 9 - ? cm
Max length : 38.1 cm SL male/unsexed; (Ref. 9761); common length : 25.0 cm TL male/unsexed; (Ref. 3142); max. reported age: 31 years (Ref. 52229)

Short description Morphology | Morphometrics

Dorsal spines (total): 9; Dorsal soft rays (total): 23-26; Anal spines: 3; Anal soft rays: 21 - 23. Caudal fin moderately emarginate (Ref. 13442). Head and body deep and compressed (Ref. 26938).

Biology     Glossary (e.g. epibenthic)

Inhabits shallow bottoms with coral or rocky formations (Ref. 13628). Usually occurs in groups of five or more individuals. Mainly diurnal species. Feeds on algae. The spine on both sides of the caudal peduncle may inflict painful wounds (Ref. 5217). Marketed fresh. Minimum depth reported from Ref. 27115.

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : Randall, John E. | Collaborators

Robins, C.R. and G.C. Ray, 1986. A field guide to Atlantic coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 354 p. (Ref. 7251)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Traumatogenic (Ref. 5217)




Human uses

Fisheries: minor commercial; aquarium: commercial; bait: occasionally
FAO(Publication : search) | FishSource | Sea Around Us

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Estimates of some properties based on models

Preferred temperature (Ref. 115969): 22.9 - 28, mean 26.6 (based on 426 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01905 (0.01253 - 0.02898), b=2.91 (2.79 - 3.03), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  2.0   ±0.0 se; Based on diet studies.
Resilience (Ref. 69278):  Very Low, minimum population doubling time more than 14 years (K=0.3-1.5; tmax=31).
Vulnerability (Ref. 59153):  Low vulnerability (20 of 100) .
Price category (Ref. 80766):   Medium.