The halibut stocks in the Northwest (NW) Atlantic are separated from those of the Northeast (NE) Atlantic. In the NW Atlantic, the analysis of the population structure of halibut in four locations (Bay of Fundy, Scotia Shelf, Gulf of St. Lawrence, and Iceland), didn´t reveal genetic differentiation (Reid et al. 2005). In the NE Atlantic, research did not found either any significant genetic differentiation in the halibut populations of Norway, Greenland and Faroe Islands, although possibly there is a segregated population in southern Norway (Seitz et al. 2014).