Fin's Fish Guide
The Black-faced blenny (Tripterygion delaisi) is a saltwater fish of the family Tripterygiidae that grows up to 9 cm.
Eastern Atlantic from the British Isles to West Africa and the Mediterranean Sea, on shallow rocky coasts.
Description
The black-faced blenny is a small, blenny-like rock fish of the family Tripterygiidae reaching about 9 cm. It is characterised by the three separate dorsal fins that give the group its name. The species shows a strong colour difference between the sexes: breeding males have a bright yellow body with a jet-black head, while females and juveniles are inconspicuously brownish and mottled. It lives on shallow rocky shores of the eastern Atlantic and the Mediterranean, often on shaded rock faces and under overhangs. It hunts small crustaceans and other tiny animals. The male fiercely defends a territory and lures females to lay their eggs on the rock, after which it guards them. It is a favourite subject for underwater photographers.
Frequently asked questions
How do you recognise the Black-faced blenny?
The Black-faced blenny has an elongate, eel-like body, is mainly yellow-gold and shows a plain pattern. Small rock fish with three separate dorsal fins; breeding males have a bright yellow body with a jet black head.
Where does the Black-faced blenny live?
The Black-faced blenny lives in the sea (marine waters) and is mostly found around sand or mud bottom. Eastern Atlantic from the British Isles to West Africa and the Mediterranean Sea, on shallow rocky coasts.
How big does the Black-faced blenny get?
The Black-faced blenny grows to a maximum of about 9 cm. On average the species is around 6 cm.
Is the Black-faced blenny dangerous to humans?
No, the Black-faced blenny is harmless to humans. None required: this species is harmless to humans.
Is the Black-faced blenny edible?
The Black-faced blenny is not usually eaten.
More photos
Easily confused with
These species look like the Black-faced blenny and live in the same waters.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Tripterygion
More from the family Tripterygiidae
Want the complete picture on the Black-faced blenny?
Point your camera at the fish and Fin names the species in seconds. Free, and the Black-faced blenny is one of 12,519 species in the app.