Mexichromis similaris

nudibranch | Durvilledoris similaris
Mexichromis similaris
Mexichromis similaris, WA, Australia, Photo: Tom Davis


Tropical Indo-Pacific


The mantle is a translucent pinkish purple and there is a white edge to the mantle. On the inside edge of the white margin there are diffuse deeper purple patches which form a continuous band. A white line runs down the middle of the mantle and forms a loop around the gill pocket. The upper half of the rhinophores and gills are orange, and the lower half a much paler colour.


Max Size: N/A cm

Sea Temperature Range: N/A

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: Widespread (100% 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