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Acanthurus olivaceus Bloch & Schneider, 1801

Orangespot surgeonfish
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Native range | All suitable habitat | Point map | Year 2050
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Acanthurus olivaceus   AquaMaps   Data sources: GBIF OBIS
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Image of Acanthurus olivaceus (Orangespot surgeonfish)
Acanthurus olivaceus
Picture by Muséum-Aquarium de Nancy/D. Terver


Australia country information

Common names: Orangeband surgeonfish, Orangebar surgeonfish, Orange-blotch surgeon
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Recorded from Shark Bay (Ref. 115274). Including Lord Howe Island (Ref. 9710). Also Ref. 1602, 37792, 41630.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/as.html
National Fisheries Authority: http://www.csiro.au/
Occurrences: Occurrences Point map
Main Ref: Randall, J.E., G.R. Allen and R.C. Steene, 1990
National Database:

Common names from other countries

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Acanthuriformes (Surgeonfishes) > Acanthuridae (Surgeonfishes, tangs, unicornfishes) > Acanthurinae
Etymology: Acanthurus: Greek, akantha = thorn + Greek, oura = tail (Ref. 45335).
  More on authors: Bloch & Schneider.

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

Marine; reef-associated; depth range 3 - 46 m (Ref. 1602), usually 9 - 46 m (Ref. 1602).   Tropical; 24°C - 28°C (Ref. 27115); 35°N - 32°S, 95°E - 139°W

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

Pacific Ocean: Christmas Island and Cocos-Keeling Islands in the eastern Indian Ocean to the Hawaiian and Tuamoto islands, north to Japan, south to Lord Howe Island. Replaced by Acanthurus tennenti in the Indian Ocean (Ref. 37816).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 35.0 cm TL male/unsexed; (Ref. 2334); max. reported age: 33 years (Ref. 52229)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 9; Dorsal soft rays (total): 23 - 25; Anal spines: 3; Anal soft rays: 22 - 24. Body of adult dark grayish brown; juveniles yellow; posterior to upper end of gill opening is a bright orange horizontal band, with purplish black border. Head and anterior half of body usually abruptly paler than the posterior half. Anterior gill rakers 24-28; posterior 23-27. Large adult males (about 17 cm) with more definite convexity of snout profile.

Biology     Glossary (e.g. epibenthic)

Inhabit seaward reefs, in areas of bare rock or mixed rubble and sand, from 9 to at least 46 m depth; juveniles inhabit protected bays and lagoons, singly or in small groups in as little as 3 m (Ref. 1602, 48637). Benthopelagic (Ref. 58302). Adults occur singly or in schools and feed on surface film of detritus, diatoms, and fine filamentous algae covering sand and bare rock (Ref. 1602). Rarely poisonous (Ref. 4795).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

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

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)

  Least Concern (LC) ; Date assessed: 04 May 2010

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless (Ref. 4795)




Human uses

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

More information

Trophic ecology
Food items
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Food consumptions
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Predators
Ecology
Ecology
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Length-weight rel.
Length-length rel.
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Estimates based on models

Preferred temperature (Ref. 115969): 24.5 - 28.7, mean 27.3 (based on 356 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02570 (0.01656 - 0.03989), b=3.00 (2.87 - 3.13), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trophic level (Ref. 69278):  2.3   ±0.17 se; based on food items.
Resilience (Ref. 120179):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (18 of 100).
Price category (Ref. 80766):   Medium.