FILE - In this April 20, 2011, file photo commercial fisherman Ted Petrie picks through a pile of shrimp on his boat in Grand Isle, La. An advocacy group, Oceana, conducted a DNA-based survey of shrimp sold at outlets across the country and around the Gulf of Mexico. Results released Thursday, Oct. 30, 2014,  show consumers cannot be sure what kind of shrimp they are buying simply by looking at the grocery store label or restaurant menu. (AP Photo/Patrick Semansky)
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