Discotrema crinophilum

Crinoid Clingfish
Discotrema crinophilum
Discotrema crinophilum, Milne Bay, PNG, Photo: Andrew Green


Tropical Indo-Pacific


Rounded head, tapering body. Lives amongst the arms of Crinoids (Featherstars), colour matching host featherstar. Lighter body stripe and short dark stripe through eye. May have 2nd body stripe on back.


Max Size: 6 cm

Sea Temperature Range: 25.7-30.7°C

Depth: 8-20m

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 (33.3% 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: Joe Shields