Sobeys Inc. plans to raise the bar today with its plan to push seafood suppliers and producers to run sustainable fisheries and farms to sell their fish at 1,300 Sobeys stores across the country under retail banners that include Thrifty Foods and IGA. Sobeys, the second-largest grocer in Canada, is the latest to release a sustainable seafood policy as food retail giants jostle to convince eco-conscious consumers of their commitment to protect vulnerable fish stocks.