Icelandic seafood giant Samherji has agreed to acquire a 50 percent stake in a US seafood importer, distributor and marketer -- another step in the group's expansion into the North American market.

Boston-based Aquanor Marketing, which supplies primarily fresh North Atlantic seafood species, has been one of Samherji's customers for over a decade, and makes up a significant share of Aquanor's imports.

Aquanor, founded in 1985, supplies the premium retail, restaurant and wholesale sector, including under the Aquanor and WiAnno brands.