Nepanthia crassa

Western seastar
Nepanthia crassa
Nepanthia crassa, Perth, WA, Photo: Tom Davis


Temperate Australasia


Large green tubercles over the surface, contrasting with the reddish brown background colouration. The species generally lives concealed under rocks during the day and moves about at night.


Max Size: 13 cm

Sea Temperature Range: 17.1-24.2°C

Depth: 0-38m

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 (4.2% 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