Chelmonops truncatus

Eastern talma
Chelmonops truncatus
Chelmonops truncatus, adult, NSW, Australia, Photo: Ian Shaw
Chelmonops truncatus
Chelmonops truncatus, Jervis Bay, NSW, Photo: Andrew Green
Chelmonops truncatus
Chelmonops truncatus, juvenile, NSW, Australia, Photo: Ian Shaw
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Chelmonops truncatus
Chelmonops truncatus
Chelmonops truncatus


Temperate Australasia


Shorter and less pointed dorsal and anal fins than the western talma. The two species have a different geographic ranges, so unlikely to be confused.


Max Size: 22 cm

Sea Temperature Range: 15.3-24.6°C

Depth: 2-70 m

Habitat Generalization Index: 7.15

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 (10.4% 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 (2 per transect)

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

Edit by: GJ Edgar. 2008. Australian Marine Life. New Holland, Sydney