How Much Mercury Is In King Fish?

How Much Mercury Is In King Fish? hideMercury levels in commercial fish and shellfish species Mean (ppm) Trophic level Shark 0.979 Mackerel (king)0.7304.5 Tuna (bigeye) 0.689 4.5 Is King Fish good during pregnancy? The food and drug administration says that pregnant women should not eat shark, swordfish, king mackerel or tilefish because they may contain