Ecsenius lividanalis

Blackass combtooth blenny | Blackass Blenny
Ecsenius lividanalis
Ecsenius lividanalis, Raja Ampat, Indonesia, Photo: Andrew Green
Ecsenius lividanalis
Ecsenius lividanalis, Raja Ampat, Indonesia, Photo: Rick Stuart-Smith
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Ecsenius lividanalis
Ecsenius lividanalis


Tropical Indo-Pacific


Small body with a rounded belly, eye with gold iris and black outer ring. Two colour forms: bright yellow and dark grey. Actively hovers above coral to view approaching diver, and darts back into cover.


Max Size: 5 cm

Sea Temperature Range: 26.6-31.1°C

Depth: 1-12m

Habitat Generalization Index: 1.89

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: Frequent (10.7% 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: Few (3 per transect)

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

Edit by: Joe Shields