Ecsenius bicolor

Bicolor blenny | Two-colour Combtooth Blenny | Two-coloured Blenny | Two-tone Combtooth Blenny
Ecsenius bicolor
Ecsenius bicolor, Bali, Indonesia, Photo: Ian Shaw
Ecsenius bicolor
Ecsenius bicolor, Maldives, Photo: Rick Stuart-Smith
Ecsenius bicolor
Ecsenius bicolor, North WA, Australia, Photo: Andrew Green
Ecsenius bicolor
Ecsenius bicolor, QLD, Australia, Photo: Joe Shields
Ecsenius bicolor
Ecsenius bicolor, North WA, Australia, Photo: Andrew Green
Ecsenius bicolor
Ecsenius bicolor, QLD, Australia, Photo: Joe Shields
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Ecsenius bicolor
Ecsenius bicolor
Ecsenius bicolor
Ecsenius bicolor
Ecsenius bicolor
Ecsenius bicolor

Distribution

Tropical Indo-Pacific


Description

Variable in colour but most commonly grey front half of body and yellow/orange rear half. Other common colour forms are grey head and upper body grading to yellow towards rear with a white underside; yellowish-green head and fore-body grading to grey rear. All variations have dark eyes with silver irises, a pair of long straight cirri between, and a light pink arc behind and beneath each eye.


Information

Max Size: 11 cm

Sea Temperature Range: 22.2-31.4°C

Depth: 1-25m

Habitat Generalization Index: 16.4

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 (21.0% 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: Several (5 per transect)

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


Edit by: Joe Shields