Fish
Fifteen-spined stickleback
Spinachia spinachia
How to spot it
Pencil-thin fish with a row of tiny spines along the back and a slender tail wrist.
Usually seen at
3-14 m (median 8 m)
Size
Small (under 10 cm)
Habitat
Kelp
Behaviour
Solitary, Hovering
Where it's seen
Occurrence records around the UK and north-east Atlantic (OBIS).