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Rosefish
A large marine scorpaenoid food fish (Sebastes marinus) found on the northern coasts of Europe and America. called also red perch, hemdurgan, Norway haddok, and also, erroneously, snapper, bream, and bergylt.
The blueback salmon of the North Pacific; -- called also nerka. See Blueback (b).
oewn 202368% interchangeable
Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.