Ecsenius trilineatus

Whitespotted Combtooth Blenny | Three-lined Blenny
Ecsenius trilineatus
Ecsenius trilineatus, North WA, Australia, Photo: Andrew Green
Ecsenius trilineatus
Ecsenius trilineatus, Bali, Indonesia, Photo: Ian Shaw
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Ecsenius trilineatus
Ecsenius trilineatus


Tropical Indo-Pacific


Three dark brown stripes along body often breaking up towards rear, with rows of white spots between, two brown lines on pectoral fin base. Eye with golden iris and fine black and gold spoke-like pattern. E. schroederi (Schroeder’s Combtooth Blenny) has much finer stripes and no white spots between first and second stripe. E. aequalis (Fourline Combtooth Blenny) has an extra stripe along body, and lacks rows of spots and spoke pattern on eye.


Max Size: 3 cm

Sea Temperature Range: 26.1-31.6°C

Depth: 2-10m

Habitat Generalization Index: 0.44

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: Least Concern

Occurrence: Infrequent (6.9% 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