Interactive Seashore

Seashore

Shanny (common blenny)

Lipophrys pholis

The little fish of the rock pool: blotchy, big-eyed and curious, with no scales and a long fin down its back.

Size
Up to about 16cm long
Look for it
All year round
Where
Rock pools, crevices and under stones on rocky shores

My spotter's list

Wriggles after you and stops to stare with its big eyes. Move your pointer and see.

When to look

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Shanny

Good to know

Six things about the shanny

Air

A fish out of water

When the tide goes out, a shanny can stay out of water for hours, tucked into a damp crack or under seaweed.

Skin

Slime, not scales

Shannies have no scales. Their skin is covered in slime, which stops them drying out.

Home

Back to its own pool

A shanny knows its patch of shore well and can find its way back to its home pool.

Eggs

Dad stands guard

The male guards the eggs in a crack in the rock for weeks, fanning them with his fins.

Food

Barnacle nibbler

It eats barnacles, small crabs and other little animals, nipping them off the rock with strong teeth.

Colour

Changing to match

A shanny can go paler or darker to match the rock and weed around it.

The real thing

Photos of the shanny

Shanny (common blenny), photo 1
Photo: Gilles San Martin, CC BY-SA 3.0, Wikimedia Commons
Shanny (common blenny), photo 2
Photo: jujurenoult, CC BY 4.0, Wikimedia Commons
Shanny (common blenny), photo 3
Photo: Tylwyth Eldar, CC BY-SA 4.0, Wikimedia Commons
Out and about

How to spot one

Sit quietly by a rock pool and watch the cracks and the gaps under stones. A shanny will often poke its head out to look at you.

Lend a hand

How to help

Lift stones gently and lower them back the same way up. A fish left out of water under a turned stone will dry out.

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