Health Canada adds mercury limits for 6 fish

Changing eating habits have led Health Canada to establish new mercury limits on six species of fish.
The fish – fresh and frozen tuna, shark, swordfish, escolar, marlin and orange roughy – are predators that tend to have higher levels of mercury because of their relative size, lifespan and diet, the department said.
The mercury limit for the fish, which were previously exempt from standards, is 1.0 parts per million (ppm).
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