Mercury In Fish

High Quality Content by WIKIPEDIA articles! Fish and shellfish concentrate mercury in their bodies, often in the form of methylmercury, a highly toxic organic compound of mercury. Fish products have been shown to contain varying amounts of heavy metals, particularly mercury and fat-soluble pollutants from water pollution. Species of fish that are long-lived and high on the food chain, such as marlin, tuna, shark, swordfish, king mackerel, tilefish, northern pike, and lake trout contain higher concentrations of mercury than others. The presence of mercury in fish can be a health issue, particularly for women who are or may become pregnant, nursing mothers, and young children.