
3. Atlantic Herring (1,300 to 1,700 mg per 3-Ounce Serving)
Herring represents one of the most concentrated, sustainable, and underappreciated omega-3 sources available. Because these small fish feed primarily on plankton near the base of the ocean food chain, they store immense quantities of EPA and DHA without concentrating heavy metals or microplastics. Whether enjoyed fresh, kippered, or pickled, a modest serving of herring meets your weekly cardiovascular omega-3 recommendations in a single meal.

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