All fish have some levels of mercury in them. Some fish have more mercury than others. Fish that eat other fish, or fish that are long-lived tend to have more mercury than smaller, less predatory fish.

The following poster identifies the typical (average) amounts of mercury in commonly consumed commercial and sport-caught fish. Using this chart allows you to make lower mercury fish a larger part of your diet. Pregnant and nursing women should be especially careful about eating fish that have higher mercury levels.

this poster shows mercury levels for different kinds of fish