Trachinotus anak

Giant oystercracker | Dart | Oyster Pompano | Oyster-eater
Trachinotus anak
Trachinotus anak, Townsville, Queensland, Australia, Photo: Graham Edgar


Tropical Indo-Pacific


High rounded head, elongated dorsal and anal fin lobes, yellow fins. Very similar to T. blochii (Snubnose Dart), both changing body shape and fin length with age. Distinguished by dark leading edges on elongated dorsal and anal fin lobes in T. blochii, which are proportionally longer than on a similar sized T. anak. Endemic to Australia.


Max Size: 120 cm

Sea Temperature Range: N/A

Depth: 0-5m

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: Widespread (100% 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: RD Stuart-Smith, GJ Edgar, AJ Green, IV Shaw. 2015. Tropical Marine Fishes of Australia. Reed New Holland