![]() ![]() Golden tilefish are slow growers and seem to acquire their elevated mercury levels over a lifetime of decades. Golden tilefish, a bottom dwelling fish living at the edge of the continental shelf, has high mercury concentrations averaging about 1 part per million, enough for the Food and Drug Administration (FDA) to include this species among the four groups that warrant greatest concern. Dolphinfish, an energetic pelagic top predator, has relatively low mercury concentrations, probably because it grows rapidly and efficiently.
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