Alex Mustard / Butterfish (Pholis gunnellus) portrait. Gardur, south west Iceland. North Atlantic Ocean.

Linda Pitkin / 2020VISION / Shanny (Lipophrys pholis) in a crevice in a harbour wall, Bovisand Harbour, Plymouth, Devon, England, UK, July

Alex Mustard / Portrait of a butterfish (Pholis gunnellus) in seaweeds, on a chalk reef. Sheringham, north Norfolk, England, United Kingdom. North Sea

Robert Thompson / Common blenny (Lipophrys pholis) Ballywhoriskey point, Fanad peninsula, County Donegal, Republic of Ireland.

Robert Thompson / Blenny (Lipophrys pholis) Ballywhoriskey Point, Fanad Peninsula, County Donegal, Northern Ireland.

Nick Upton / Common prawns (Palaemon serratus) and a Shanny (Lipophrys pholis) feeding on a dead Montagu's crab (Xantho hydrophilus) in a rockpool, Cornwall, England, UK, September.

Nick Upton / Common prawns (Palaemon serratus) feeding on a dead Montagu's crab (Xantho hydrophilus) in a rockpool, with a a Rock goby (Gobius paganellus) swimming past, Cornwall, England, UK, September.

Graham Eaton / Two Shannies (Lipophrys pholis) in a tidepool with barnacles on rock, Nefyn, Gwynedd, Wales, July.

MYN / Tim Hunt / Shanny (Blennius / Lipophrys pholis) from rockpool, Kimmerage, Dorset, England, UK, April.

Andy Jackson / 2020VISION / Butterfish (Pholis gunellus) swimming alongside the wreck of the Endeavour, Kirkwall Bay, Orkney, Scotland, UK, June 2011.

Brent Stephenson / Black guillemot (Cepphus grylle) with a Rock gunnel (Pholis gunnellus) in its bill. Vigur Island, Isafjardardjup, Iceland. July.

Alex Hyde / Eggs of Common Blenny / Shanny (Lipophrys pholis). Isle of Mull, Inner Hebrides, Scotland, UK. June.

Alex Mustard / Butterfish (Pholis gunnellus) portrait. Gardur, south west Iceland. North Atlantic Ocean.

Robert Thompson / Butterfish (Pholis gunnellus) in rock pool, St John's Point, near Kilough, County Down, Northern Ireland, February 2013

Sue Daly / Shanny (Lipophrys pholis) English Channel, off the coast of Sark, Channel islands, August

Sue Daly / Shanny (Lipophrys pholis) English Channel, off the coast of Sark, Channel islands, July

Sue Daly / Shanny (Lipohrys pholis) English Channel, off the coast of Sark, Channel islands, July

Sue Daly / Shanny (Lipohrys pholis) English Channel, off the coast of Sark, Channel islands, June

Christophe Courteau / Common shore crab {Carcinus maenas} + Blenny {Lipophrys pholis} Brittany France

Linda Pitkin / 2020VISION / Shanny (Lipophrys pholis) in a crevice in a harbour wall, Bovisand Harbour, Plymouth, Devon, England, UK, July

Linda Pitkin / 2020VISION / Shanny (Lipophrys pholis) in a crevice in a harbour wall, Bovisand Harbour, Plymouth, Devon, England, UK, July

Nick Upton / Common Blenny / Shanny (Lipophrys pholis) hiding under Coralweed (Corallina officinalis) in a rockpool near a Common / Edible periwinkle (Littorina liitorea), Rhossili, The Gower peninsula, UK, July.

Nick Upton / Common Blenny / Shanny (Lipophrys pholis) hiding under Coralweed (Corallina officinalis) in a rockpool near a Common / Edible periwinkle (Littorina liitorea), Rhossili, The Gower peninsula, UK, July.

Alex Hyde / Butterfish / Gunnel (Pholis gunnellus) against white background. From the Isle of Skye, Inner Hebrides, Scotland, UK.

Alex Hyde / Blenny / Common Blenny / Shanny (Lipophrys / Blennius pholis) against white background. From the Isle of Skye, Inner Hebrides, Scotland, UK.

Sue Daly / Shanny (Lipophrys pholis) Channel Islands, UK June

Nick Upton / Shanny (Lipophrys pholis) in shallow rockpool on a falling tide, St. Bees, Cumbria, UK, July

Nick Upton / Shanny (Lipophrys pholis) in small rockpool on a falling tide, St. Bees, Cumbria, UK, July

Nick Upton / Shanny (Lipophrys pholis) in small rockpool on a falling tide, St. Bees, Cumbria, UK, July

Nick Upton / Shanny (Lipophrys pholis) in small rockpool on a falling tide, St. Bees, Cumbria, UK, July

Nick Upton / Close up view of Shanny (Lipophrys pholis) in shallow rockpool on a falling tide, St. Bees, Cumbria, UK, July

Nick Upton / Close up view of Shanny (Lipophrys pholis) in small rockpool on a falling tide, St. Bees, Cumbria, UK, July

Nick Upton / Shanny (Lipophrys pholis) in small rockpool on a falling tide, St. Bees, Cumbria, UK, July

MYN / Carsten Krieger / Shanny / Common Blenny (Blennius / Lipophrys pholis) from rocky shore, County Clare, Republic of Ireland, August. meetyourneighbours.net project

MYN / Carsten Krieger / Shanny / Common Blenny (Blennius / Lipophrys pholis) from rocky shore, County Clare, Republic of Ireland, August. meetyourneighbours.net project

Linda Pitkin / 2020VISION / Butterfish (Pholis gunnellus) on Dead-man's fingers (Alcyonium digitatum), St Abbs (St Abbs and Eyemouth Voluntary Marine Reserve), Berwickshire, Scotland, UK, August 2011

Alex Mustard / 2020VISION / Butterfish (Pholis gunnellus) beside Sea urchin (Echinus esculentus) Loch Carron, Ross and Cromarty, Scotland, UK, April

Alex Mustard / 2020VISION / Butterfish (Pholis gunnellus) Loch Carron, Ross and Cromarty, Scotland, UK, April

Graham Eaton / Butterfish / Gunnell (Pholis gunellus) in rockpool habitat. Cardigan Bay, Wales, April.

Fergus Gill / Shanny / Common blenny (Lipophys / Blennius pholis) sunbathing in a rockpool. Montrose, Scotland, August .

Alex Hyde / Common Blenny / Shanny (Lipophrys / Blennius pholis) camouflaged in rockpool. Isle of Mull, Scotland. June 2010.

Robert Thompson / Butterfish / Shanny {Blennius pholis} in shallow water, Strangford Lough, County Down, Northern Ireland, UK, August

Robert Thompson / Shanny {Blennius / Lipophrys pholis} in rock pool, Murles Point, County Donegal, Republic of Ireland, May

Robert Thompson / Shanny {Blennius / Lipophrys pholis} in rock pool, Murles Point, County Donegal, Republic of Ireland, May

Laurie Campbell / Shanny {Blennius pholis}, Beadlet anemones {Actinia equina}, Periwinkle and Limpet in rock pool on upper shore, Loch Sunart, Argyl, Scotland, July

Jane Burton / Common blenny / Shanny {Blennius pholis} out of water in rock pool beside Beadlet anemones, Europe

Graham Eaton / Butterfish / Gunnel (Pholis gunnellus) Wales, UK, 2007

Alan James / Butterfish / Gunnel {Pholis gunnellus} UK

John Cancalosi / Crescent gunnel {Pholis laeta} north america, captive

Doug Wechsler / Crescent gunnel in eel grass {Pholis laeta} Puget Sound, WA, USA

Ingo Arndt / Butterfish (Pholis gunnellus) or Gunnell, fifteen centimeters long, Helgoland, Germany

Simon Colmer / Green shore crab (Carcinus maenas) in rock pool with Beadlet anemone (Actinia equina), Common limpet (Patella vulgata), American slipper limpet (Crepidula fornicata), flat top shell (Gibbula umbilical...

Simon Colmer / Common Blenny / Shanny (Lipophrys / Blennius pholis) Sussex, UK

Adrian Davies / Shanny {Blennius pholis} with sea anemones and starfish. England coastal waters

Michael Hutchinson / Shanny / Smooth blenny {Blennius pholis} Cornwall, UK.

Dan Burton / Shanny (Blennius pholis). England, UK, Europe

Joel Sartore / Photo Ark / Shanny (Lipophrys pholis) portrait, Vasco da Gama Aquarium. Captive occurs in eastern Atlantic Ocean and Mediterranean.

David Fleetham / Longfin gunnel (Pholis clemensi) resting on tubeworm covered rock, British Columbia, Canada, Pacific Ocean.

Terry Whittaker / Black guillemot (Cepphus grylle) brings butterfish (Pholis gunellus) prey to its nest within harbour wall, Portpatrick Harbour, Scotland, May.

Shane Gross / Longfin gunnel (Pholis clemensi) hiding under a California sea cucumber (Parastichopus californicus), Vancouver Island, British Columbia, Canada, Pacific Ocean.

Shane Gross / Crescent gunnel (Pholis laeta) peaking out from Colorful rock wall off Vancouver Island, British Columbia, Canada

Nick Upton / Close up view of a Common Blenny / Shanny (Lipophrys pholis) in a rock pool, The Gower, Wales, UK, September.

Alex Mustard / Shanny or Common blenny (Lipophrys pholis) male showing breeding colours looking out from a crack in shallow water. Swanage, Dorset, England, United Kingdom. English Channel. North East Atlantic

Alex Mustard / Shanny / Common blenny (Lipophrys pholis) on a bed of barnacles. Babbacombe, Torquay, Devon, England, United Kingdom. English Channel. North East Atlantic Ocean.

Alex Mustard / Shanny / Common blenny (Lipophrys pholis) on a bed of barnacles. Babbacombe, Torquay, Devon, England, United Kingdom. English Channel. North East Atlantic Ocean.

Alex Mustard / Portrait of Shanny / Common blenny (Lipophrys pholis) on a bed of barnacles. Babbacombe, Torquay, Devon, England, United Kingdom. English Channel. North East Atlantic Ocean.

David Hall / Crescent gunnel (Pholis laeta) Shoal Bay, Discovery Passage, British Columbia, Canada. March.

Nick Upton / Shanny (Lipophrys pholis) hiding in a crevice in a rock pool, Gower Peninsula, Glamorgan, Wales, UK, August.

Nick Upton / Shanny (Lipophrys pholis) camouflaged in a rock pool, swims away, Gower Peninsula, Glamorgan, Wales, UK, August.

Nick Upton / Common Blenny / Shanny (Lipophrys pholis) hiding in a crevice in a rock pool, The Gower, Wales, UK, August.