Nearly all fish and shellfish contain traces of mercury. For most people, the risk from mercury by eating fish and shellfish is not a health concern. Yet, some fish and shellfish contain higher levels of mercury that may harm an unborn baby or young child’s developing nervous system.
For all the facts and what you should know about mercury in fish and shellfish, visit the U.S. Food and Drug Administration website. Besides making valuable recommendations, they publish a very useful chart listing the mercury levels in commercial fish and shellfish.
Source of data:FDA 1990-2010