1. Atlantic Mackerel (purse seine, from Canada and the U.S.)
This species is a fast-growing fish, meaning it can repopulate easily and handle higher amounts of fishing. The gear used to catch Atlantic mackerel is efficient and not likely to cause major habitat destruction, another reason this guy is an ocean-friendly choice. This strong-flavored fish is high in heart-healthy omega-3s, a good source of protein—delivering 20 grams in a 3-ounce fillet—and pairs well with bold seasonings. Check out our recipe for Korean Grilled Mackerel flavored with rich Korean chile paste and fresh ginger.