Acanthurus chirurgus

Doctorfish | Black Doctorfish
Acanthurus chirurgus
Acanthurus chirurgus, Florida Keys, USA, Photo: Graham Edgar
Acanthurus chirurgus
Acanthurus chirurgus, Bocas del Toro, Panama, Photo: Rick Stuart-Smith
Acanthurus chirurgus
Acanthurus chirurgus, Bonaire, Photo: Rick Stuart-Smith
Acanthurus chirurgus
Acanthurus chirurgus, Florida Keys, USA, Photo: Graham Edgar
Acanthurus chirurgus
Acanthurus chirurgus, Abrolhos, Bahia, Brazil, Photo: Graham Edgar
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Acanthurus chirurgus
Acanthurus chirurgus
Acanthurus chirurgus
Acanthurus chirurgus
Acanthurus chirurgus

Distribution

Tropical Atlantic/Caribbean


Description

Olive-brown with about ten evenly spaced dark bands on side, may display a white band on tail base, tail spine bordered in iridescent blue, dorsal and anal fins with blue margins and tail fin blue. Juveniles use mangroves and seagrass beds as nurseries.


Information

Max Size: 39 cm

Sea Temperature Range: 21.6-31.1°C

Depth: 2-25m

Habitat Generalization Index: 11.9

Also referred to as the SGI (Species Generalisation Index), this describes the habitat niche breadth of the species. Species with values less than 15 are found in a relatively narrow range of reef habitat types (specialists), while those over 25 may be found on most hard substrates within their range (generalists). Learn more here.


Conservation and Rarity

IUCN Status: Least Concern

Occurrence: Common (22.3% of sites)

Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed

Abundance: Few (5 per transect)

Abundance is calculated as the average number of individuals recorded per RLS transect, where present.


Edit by: Joe Shields