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Gendarme Fish

Acanthurus olivaceus

  • Fish
  • IUCN: Least concern
  • Usual depth6–23 m
  • Water temperature24–30 °C
  • Best monthsJuly, August, and September
  • How commonCommon
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Photo credit: (c) Rickard Zerpe, some rights reserved (CC BY) · CC BY · iNaturalist

About this species

Acanthurus olivaceus, the orange-band surgeonfish, orange-shoulder surgeonfish or orangebar tang, is a species of marine ray-finned fish in the family Acanthuridae, the surgeonfishes, unicornfishes and tangs. It lives in the tropical waters of the Indo-Pacific.

Text from the Wikipedia article “Acanthurus olivaceus”, licensed CC BY-SA 4.0. Read the article

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

  • January: 383 records
  • February: 525 records
  • March: 732 records
  • April: 1,415 records
  • May: 882 records
  • June: 955 records
  • July: 1,515 records
  • August: 1,906 records
  • September: 2,303 records
  • October: 1,340 records
  • November: 504 records
  • December: 203 records

Depth and water temperature

Depth

Mostly recorded at 6–23 m · Deepest record: 72 m

  • 0–10 m: 2,326 records
  • 10–20 m: 5,251 records
  • 20–30 m: 2,080 records
  • 30–40 m: 35 records
  • 40–50 m: 6 records
  • 50–60 m: 4 records
  • 60–70 m: 3 records
  • 70–80 m: 2 records

Water temperature

Recorded in surface water of 24–30 °C

  • 22–24 °C: 10 records
  • 24–26 °C: 433 records
  • 26–28 °C: 55 records
  • 28–30 °C: 231 records

Names and classification

English
Gendarme Fish, Olive Surgeonfish, Orange band Surgeonfish, Orangeband Surgeonfish, Orangeband Surgeonfish, Orangespot surgeonfish, Orangebar Surgeonfish, Orange-blotch Surgeon, Orange-blotch Surgeonfish, Orangeblotch Surgeonfish, Orange-ear Surgeonfish, Orange-epaulette Surgeonfish, Orange Epoulette Surgeon, Orangeshoulder Tang, Orange-spot Surgeon-fish, Orange-spot Surgeonfish, Orangespot Surgeon-fish, Orangespot Surgeonfish, orangespot tang, Orange Spot Tang
Names in 6 more languages
German
Orangefleck-Doktorfisch
Spanish
Pez Cirujano de Banda Naranja
Filipino
Dabahita, Labahita, Samarel, Surahan
French
Chirurgien à Epaulettes, Chirurgien à épaulettes orange, Chirurgien à épaulettes, Poisson gendarme, Chirurgien Olive, Chirurgien olive, Chirurgien à épaulettes, Poisson Gendarme
Japanese
Montsukihagi, モンツキハギ
Simplified Chinese
一字刺尾鯛

Other scientific names: Acanthurus chrysosoma, Acanthurus eparai, Acanthurus eparei, Acanthurus erythromelas, Acanthurus humeralis, Acanthurus olicaceous, Ctenodon erythromelas, Harpurus paroticus, Hepatus chrysosoma, Hepatus olivaceus, Rhombotides olivaceus, Rhombotides xanthosoma, Teuthis olivaceus

Similar species

Sources and credits

Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).

  • Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
  • Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
  • Conservation status as published by GBIF (IUCN Red List).
  • 12,190 open-data records from 1801 to 2023.
  • Species data updated October 26, 2026.

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