Fin's Fish Guide
The Butter sole (Isopsetta isolepis) is a saltwater fish of the family Pleuronectidae that grows up to 55 cm.
Description
The butter sole is a right-eyed flatfish of the family Pleuronectidae from the eastern Pacific, from Alaska to California. The species reaches about 55 cm; both eyes lie on the right side and the eyed side is brown with a smooth, 'buttery' skin. It is common in shallow water on soft, silty bottoms. In summer it moves into shallow water and in winter to deeper water, to about 425 m; spawning fish make north-south migrations. The diet consists of polychaete worms, young herring, shrimps and sand dollars. It is a tasty food fish sometimes marketed.
Frequently asked questions
How do you recognise the Butter sole?
The Butter sole has a flattened, disc-shaped body, is mainly brown and shows a marbled pattern. Right-sided flatfish with smooth, 'buttery' skin; makes seasonal migrations.
Where does the Butter sole live?
The Butter sole lives in the sea (marine waters) and is mostly found around sand or mud bottom. Eastern Pacific, from Alaska to California.
How big does the Butter sole get?
The Butter sole grows to a maximum of about 55 cm. On average the species is around 30 cm.
Is the Butter sole dangerous to humans?
No, the Butter sole is harmless to humans. None required: this species is harmless to humans.
Is the Butter sole edible?
Yes, the Butter sole is commonly eaten.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
More from the family Pleuronectidae
Want the complete picture on the Butter sole?
Point your camera at the fish and Fin names the species in seconds. Free, and the Butter sole is one of 12,519 species in the app.