Acanthurus lineatus

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Acanthurus lineatus
Acanthurus lineatus, Photo: Andrew Green
Acanthurus lineatus
Acanthurus lineatus, Bali, Indonesia, Photo: Ian Shaw
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Acanthurus lineatus
Acanthurus lineatus


Tropical Indo-Pacific


Distinctive yellow and blue striped pattern on side, pale blue belly and crescent tail. Usually found on shallow reef flats and crests.


Max Size: 38 cm

Sea Temperature Range: 23.2-31.3°C

Depth: 0-15m

Habitat Generalization Index: 21.04

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: Frequent (16.9% 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: Several (8 per transect)

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

Edit by: Joe Shields