Fin's Fish Guide
The Cocos barnacle blenny (Acanthemblemaria atrata) is a saltwater fish of the family Chaenopsidae that grows up to 3 cm.
Description
The Cocos barnacle blenny is a tiny blenny (Chaenopsidae) from the eastern Pacific, around Cocos Island off Costa Rica. The species grows to only about 3 cm and has an elongate, dark body and a head with fringe-like appendages. It occupies empty barnacle or worm tubes on the reef, from which only the head protrudes, and snaps at small zooplankton drifting past. The fish is harmless to humans.
Frequently asked questions
How do you recognise the Cocos barnacle blenny?
The Cocos barnacle blenny has an elongate, eel-like body and is mainly black.
Where does the Cocos barnacle blenny live?
The Cocos barnacle blenny lives in the sea (marine waters) and is mostly found around sand or mud bottom. South America: Cocos I. (C.R.)
How big does the Cocos barnacle blenny get?
The Cocos barnacle blenny grows to a maximum of about 3 cm.
Is the Cocos barnacle blenny dangerous to humans?
No, the Cocos barnacle blenny is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Acanthemblemaria
More from the family Chaenopsidae
Want the complete picture on the Cocos barnacle blenny?
Point your camera at the fish and Fin names the species in seconds. Free, and the Cocos barnacle blenny is one of 12,519 species in the app.