Asterodiscides truncatus

Asterodiscides truncatus
Asterodiscides truncatus, Northland, New Zealand, Photo: Graham Edgar
Asterodiscides truncatus
Asterodiscides truncatus, Batemans Bay, NSW, Photo: Andrew Green
Asterodiscides truncatus
Asterodiscides truncatus, Ulladulla, NSW, Photo: Andrew Green
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Asterodiscides truncatus
Asterodiscides truncatus
Asterodiscides truncatus


Temperate Australasia


Rounded tubercles on the upper body surface, large body size, and purple, red and orange colouration. It is occasionally sighted by divers on deep reefs and has also been collected by trawl from silt substrates in areas deeper than normal diving depths.


Max Size: 34 cm

Sea Temperature Range: 11.6-23.6°C

Depth: 14-800m

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: Infrequent (3.8% 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