Which predatory fish is listed as consistently flagged for high mercury content?
Answer
Swordfish
The accumulation of methylmercury is a significant long-term health consideration tied directly to the size and lifespan of predatory fish species. As these larger, longer-lived fish consume smaller contaminated organisms over time, they concentrate higher levels of mercury. Species specifically flagged for high mercury content that warrant consumption limitation or avoidance include Shark, Swordfish, King Mackerel, and Tilefish sourced from the Gulf of Mexico. In contrast, smaller, short-lived species feeding lower on the food chain, such as sardines or salmon, typically retain much lower levels of mercury.
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