Shanny

The Shanny (Lipophrys pholis), also called the common blenny, is a small intertidal fish in the family Blenniidae found along rocky shores of the northeastern Atlantic, from Scandinavia south to Morocco and into the Mediterranean and Canary Islands. It is one of the most frequently encountered rockpool fish across its range, tolerating the harsh, fluctuating conditions of the intertidal zone better than most other species. Its stout body, large eyes, and lack of head tentacles distinguish it from many related blennies. Shanny is abundant and not of conservation concern, and it is a common subject of rockpooling and shoreline nature study.

Identify the Shanny by:

• Stout, robust body with a blunt, rounded head, typically 10-16 cm long
• Large, bulging eyes set high on the head
• No branched tentacles above the eyes, unlike many other blenny species
• Mottled olive-brown, greenish, or grayish camouflage pattern that can change with surroundings
• A single long dorsal fin with a shallow notch between spiny and soft portions
• Thick lips and a slightly upturned mouth

The absence of eye tentacles is the clearest way to separate Shanny from similar-looking tompot blenny and other tentacled blennies.

Shanny inhabits rocky shores across the northeastern Atlantic, from Scandinavia and the British Isles south through the Bay of Biscay and Iberian Peninsula to Morocco, the Canary Islands, and the western Mediterranean. It is a true intertidal specialist, commonly found in tide pools, under rocks, and in crevices exposed at low tide, tolerating wide swings in temperature, salinity, and oxygen levels. It can survive periods out of water by sheltering in damp crevices or shallow pools. Juveniles are especially common in shallow, sheltered rockpools, while larger adults may also be found in the shallow subtidal zone.

Shanny is a hardy, territorial fish well adapted to the stresses of intertidal life, often remaining in the same tide pool or rocky patch for extended periods. It is an omnivorous forager, grazing on algae as well as small invertebrates such as barnacles, crustaceans, and worms picked from rock surfaces. When exposed at low tide, it can survive by breathing atmospheric oxygen through its skin and gill chambers while sheltering in damp crevices, an adaptation shared with few other fish. Spawning occurs in warmer months, with males guarding clutches of eggs attached to the underside of rocks or in crevices until hatching.