Which smaller mackerel species is generally considered a much safer, low-mercury alternative to King Mackerel?
Answer
Spanish Mackerel
Consumers frequently confuse King Mackerel with Spanish Mackerel, but they possess crucial biological differences that result in drastically different mercury profiles. The Spanish Mackerel is significantly smaller than the King Mackerel (*Scomberomorus cavalla*). Because of its smaller size and shorter lifespan, the Spanish Mackerel generally accumulates far lower levels of mercury, leading it to be regarded as a much safer, low-mercury choice that consumers can substitute for the higher-risk King Mackerel.

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