Bicolor Combtooth Blenny, Ecsenius bicolor (Day 1888)

Other Names: Bicolor Blenny, Bicolour Blenny, Two-colour Comb-tooth, Two-colour Combtooth Blenny

A Bicolor Combtooth Blenny, Ecsenius bicolor, at the wreck of the HMAS Brisbase, Queensland, January 2020. Source: Nigel Marsh / License: CC By Attribution-NonCommercial

A combtooth blenny with four colour forms: 1) greyish to bluish anteriorly and yellowish-orange on the rear half of the body, 2) brown to blackish above, greyish below, with a broad white midlateral stripe, 3) greyish-brown with a yellowish head, 4) overall dark greyish-brown - with a curved pinkish to orange band behind the lower rear of the eye.

Cite this page as:
Bray, D.J. 2020, Ecsenius bicolor in Fishes of Australia, accessed 14 Jun 2024,

Bicolor Combtooth Blenny, Ecsenius bicolor (Day 1888)

More Info


Shark Bay region, Western Australia, to Ashmore Reef and Cartier Reef, Timor Sea, offshore reefs and islands of the Northern Territory, and the far northern Great Barrier Reef, Queensland, to at least the Solitary Islands, New South Wales; also at Lord Howe Island in the Tasman Sea, and Cocos (Keeling) Islands and Christmas Island in the eastern Indian Ocean. Elsewhere the species is widespread and common in the Indo-west Pacific: Maldives, Myanmar, Andaman Islands, Indonesia east to Phoenix Islands and Samoa, north to Ryukyu Islands, south to northern Australia, northern New Zealand and the Kermadec Islands.

Inhabits clear lagoon and seaward reefs with mixed corals and algae-covered rocks. The Bicolor Combtooth Blenny is often seen resting on top of coral heads, or sheltering in empty worm tubes. 


Mostly detritivores - feed by combing small particles of organic matter from turf algae on the top of coral bommies.


Oviparous. females lay demersal, adhesive eggs that are attached to the substrate via a filamentous, adhesive pad or pedestal. The larvae are planktonic, often in coastal waters.

Similar Species

Although the similar Ecsenius springeri (described from the Fakfak region of the Bird’s Head Seascape of western New Guinea, West Papua Province, Indonesia) resembles the striped variety of Ecsenius bicolor, it consistently differs from E. bicolor in having a narrower black mid-lateral stripe that ends more anteriorly, a more distinct white stripe along the mid-side of the body; a more extensive orange area on the posterior half of the body, and either lacks a pinkish-to-orange diagonal band behind the eye or, if present, it is very faint.

Species Citation

Salarias bicolor Day, 1888, Suppl. Fish. India: 798. Type locality: Saddle Island, off Kyoukphyoo, Arakan, Burma.


Bray, D.J. 2020


Atlas of Living Australia

Bicolor Combtooth Blenny, Ecsenius bicolor (Day 1888)


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Allen, G.R. & Smith-Vaniz, W.F. 1994. Fishes of Cocos (Keeling) Islands. Atoll Research Bulletin 412: 1-21.

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Quick Facts

CAAB Code:37408022

Conservation:IUCN Least Concern

Depth:1-25 m

Fishing:Aquarium fish

Habitat:Reef associated

Max Size:11 cm TL

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CAAB distribution map