What fish is in McDonald's Filet-O-Fish?

Online Answer
Alaskan pollockSince 1962, the Filet-O-Fish hasn't changed much. It's a steamed bun, tartar sauce, half of a slice of cheese, and a fish filet. McDonald's has used other varieties of fish, such as halibut and cod, but now uses wild-caught, sustainable Alaskan pollock.
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