Hypselodoris obscura

Nudibranch | Obscure Hypselodoris nudibranch
Hypselodoris obscura
Hypselodoris obscura, Port Stephens, NSW, Photo: Nicola Davis
Hypselodoris obscura
Hypselodoris obscura, Port Stephens, NSW, Photo: Tom Davis
Hypselodoris obscura
Hypselodoris obscura, Narooma, NSW, Photo: Andrew Green
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Hypselodoris obscura
Hypselodoris obscura
Hypselodoris obscura




Variable body colour from a grey to dark blue covered in yellow & navy spots. Dark red gills and rhinophores with a blue colouration at the base of the rhinophores. Localised to south eastern Australia. 2 very similar species - one endemic to southern Western Australia and South Australia is Hypselodoris saintvincentia and Hypselodoris infucata widespread throughout tropical Indo-Pacific areas.


Max Size: 6 cm

Sea Temperature Range: 15.3-27.6°C

Depth: N/A

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 (6.7% 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: Solitary (1 per transect)

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

Edit by: Nicola Davis