The C-O sole (Pleuronichthys coenosus) is a saltwater fish of the family Pleuronectidae that grows up to 36 cm.
Description
The C-O sole is a righteye flounder (Pleuronectidae) from the northeastern Pacific. The species is a right-eyed flatfish with an oval, strongly flattened body and bears on its tail fin a conspicuous pattern resembling the letters 'C' and 'O', to which the name refers. It lives bottom-bound on flat and rocky bottoms of coastal waters. On the bottom it feeds on small invertebrates such as polychaete worms and molluscs. The species is harmless to humans.
Frequently asked questions
How do you recognise the C-O sole?
The C-O sole has a flattened, disc-shaped body, is mainly brown and shows a spots pattern. Pattern on the caudal fin resembling the letters 'C' and 'O'; right-eyed coastal flounder.
Where does the C-O sole live?
The C-O sole lives in the sea (marine waters) and is mostly found around sand or mud bottom. Northeast Pacific; flat and rocky bottoms of coastal waters.
How big does the C-O sole get?
The C-O sole grows to a maximum of about 36 cm.
Is the C-O sole dangerous to humans?
No, the C-O sole is harmless to humans. None required: this species is harmless to humans.
Is the C-O sole edible?
The C-O sole is rarely eaten.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Pleuronichthys
More from the family Pleuronectidae

Want the complete picture on the C-O sole?
Point your camera at the fish and Fin names the species in seconds. Free, and the C-O sole is one of 12,519 species in the app.