Lethrinus harak

Thumbprint Emperor | Black Blotch Emperor | Blackspot Emperor
Lethrinus harak
Lethrinus harak, Bali, Indonesia, Photo: Ian Shaw
Lethrinus harak
Lethrinus harak, Maldives, Photo: Rick Stuart-Smith
Lethrinus harak
Lethrinus harak, Hudson Is, Great Barrier Reef, QLD, Photo: Andrew Green
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Lethrinus harak
Lethrinus harak
Lethrinus harak


Tropical Indo-Pacific


Pearly white to brassy with an elongate dark blotch below lateral line, often surrounded by yellow. Shallow sandy lagoons and sheltered reefs.


Max Size: 50 cm

Sea Temperature Range: 22.8-31.5°C

Depth: 0-20 m

Habitat Generalization Index: N/A

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: Rare (1.0% 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 (3 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