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9. Alaskan Pollock—312.5 million pounds
Though you probably haven't actively sought out Alaskan pollock at the grocery store, there's a good chance you've crossed paths with this fish in your culinary adventures. If you've ever had a fast-food fish sandwich like McDonald's Filet-O-Fish, you were eating Alaskan pollock. The inexpensive and flakey fish is a member of the cod family.