Comanthus tasmaniae
Tasmanian feather star | Cenolia tasmaniae
Distribution
Temperate Australasia
Description
Mottled brown colouration, a lime-green disc and the densely compacted pinnules on the arms. It is smaller than C. trichoptera and generally has more arms (about 37) and fewer cirri (about 20). This crinoid can occur in very high densities under rocks but is rarely noticed by the casual diver.
Information
Max Size: 30 cm
Sea Temperature Range: 10.2-22°C
Depth: 0-63m
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: Common (24.7% 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 (6 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