Blenny in a Bottle

Blenny are small fish with characteristic faces with large eyes and mouths, some of them have antlers (cirri). Only a few centimetres long, they hide in rock holes or spend their time at the bottom of the ocean.

A recent study described unique face markings on individual blennies (J Fish Biol 2016). In fact, you can recognize individual blennies: One blenny uses to hide in a bottle immersed in the harbour. Over the course of a few days, he was always there and could not refrain from peeking out of the bottle to see what’s going on when divers turned up.

A blenny fish peeks out of a bottle immersed at the bottom of the harbour of La Restinga, El Hierro, Spain. Blenniidae have characteristic faces.
A blenny fish peeks out of a bottle immersed at the bottom of the harbour of La Restinga, El Hierro, Spain. Blenniidae have characteristic faces.
A blenny fish peeks out of his rock hole in the bottom of the ocean in El Hierro, Spain.
A blenny fish looks out of his rock hole in the bottom of the ocean.
A blenny fish peeks out of his coral-covered hole in a rock. Blenniidae have characteristic faces.
A blenny fish takes a glimpse from his coral-covered hole in a rock.
A blenny fish peeks out of a rock crevice. Blenniidae have characteristic faces.
A blenny fish looks out of a rock crevice.