What do they look like?
Also known as a shanny, the common blenny is a small yet long, smooth-bodied fish with large eyes positioned high up on a round head. It is dark brown and blotchy in colouration, sometimes with light mottling. From April to August, when they breed, males can look almost black. Common blennies possess one dorsal fin which runs the length of the back. However, this has a notch in the middle that can make it look like there are two. Unlike most blennies, the common blenny has no tentacles on its head. Adults may develop a ridge between their eyes.
Where can I see them in Scotland?
Abundant around all of Scotland’s coastline, it is a common species to find in rockpools or hiding under intertidal rocks and wet seaweed.