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Rock Gunnel

Pholis gunnellus

Rock gunnel (Pholis gunnellus) is a slender, eel-like coastal fish of cold North Atlantic and Arctic waters. It lives among algae, kelp, and rocks in the intertidal zone and shallow subtidal, where it hides in crevices and feeds on small invertebrates.

Saltwater
Rock Gunnel reference image
Krüger, public-domain, via Wikimedia Commons. Source: Wikimedia Commons.

Identification points

  • Long, narrow, eel-like body with a continuous dorsal fin running most of the back
  • Bold dark oval spots ringed with pale yellow along the base of the dorsal fin
  • Small rounded head with tiny pectoral fins and no obvious separate spiny dorsal fin

Habitat

Intertidal rock pools, kelp beds, and shallow rocky reefs with algae cover; commonly under stones and in crevices in cold coastal waters.

Bait notes

Rarely targeted on purpose. Small pieces of worm, shrimp, or crab on light tackle can tempt it; tiny soft plastics or jig heads worked close to cover may also work.

Behavior

Secretive and bottom-dwelling, often resting motionless in cover. It forages on small crustaceans, worms, and other benthic invertebrates, especially around tide changes.

Caution

Handle carefully: the fish is small and slippery, and sharp rocks and barnacles around its habitat can cause cuts. No major consumption hazard is well known, but it is not a common table species and local regulations may apply.

Fishing notes

Fish very light gear right on the bottom in rocky, weedy shallows at high tide or in tide pools. Present bait quietly near crevices and avoid snag-prone tackle; many captures are incidental while rock-pooling or shore fishing.