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One of major commercial objects of North Atlantic – beaked redfish Sebastes mentella- accomplishes the prolonged and extensive migrations from Northeastern to Northwestern Atlantic and back. These migrations were studied on movement of fishing ship, following after the redfish concentrations. Redfish coming in the Labrador Sea mainly comes from the Irminger Sea. In 2007 new information about possibility migration also from Canadian offshore waters was founded. Reductions of volume of migrations of perch to Northwest Atlantic from Northeast Atlantic are observed in last years