Butterfish and Similar Species
Pholis gunnellus
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Open the appSeveral fish can be confused with Butterfish. Here are the key differences.
Species often confused with {name}
Snake Blenny
Lumpenus lampretaeformis
Key differences: The Snake Blenny has a more pointed snout, lacks the distinctive ocelli on the dorsal fin, and typically has a more uniform coloration without prominent markings. Its dorsal fin is also composed of both spines and soft rays, unlike the Butterfish's all-spiny dorsal fin.
Yarrell's Blenny
Chirolophis ascanii
Key differences: Yarrell's Blenny has a more robust head with fleshy cirri (tentacles) on the head and nape, which are absent in the Butterfish. It also lacks the prominent ocelli on the dorsal fin and has a different fin ray count.
Shanny
Lipophrys pholis
Key differences: The Shanny is a true blenny with a more blunt head, prominent eyes, and often has a single, branched tentacle above each eye. Its dorsal fin is notched and does not have the ocellated spots characteristic of the Butterfish. The Shanny also has scales, though they can be small.
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