Siganus lineatus

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Siganus lineatus
Siganus lineatus, Raja Ampat, Indonesia, Photo: Andrew Green
Siganus lineatus
Siganus lineatus, QLD, Australia, Photo: Rick Stuart-Smith
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Siganus lineatus
Siganus lineatus


Tropical Indo-Pacific


Light blue-grey body with gold stripes and spots, yellow blotch below rear of dorsal fin, gold spots on tail. Very similar S. guttatus in SE Asia is more spotted.


Max Size: 43 cm

Sea Temperature Range: 22.4-31.2°C

Depth: 0-25 m

Habitat Generalization Index: 7.54

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: Not Evaluated

Occurrence: Infrequent (9.7% 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 (6 per transect)

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

Edit by: RD Stuart-Smith, GJ Edgar, AJ Green, IV Shaw. 2015. Tropical Marine Fishes of Australia. Reed New Holland