MERCURY LEVELS IN COMMERCIAL FISH AND SHELLFISH

els found in different test samples, it is difficult to know how much mercury is in any given fish meal. There are also contradictions between different studies. One study showed moderate mercury content in tuna, while another report showed much higher levels. Ditto for lobster, in which one report showed high mercury levels while another showed a modest amount. All studies we have looked at show that salmon contains very little mercury. In the following table, mercury levels are provided for different fish species. The “ND” stands for “none detected,” and salmon is one of the few fish species in which mercury was not detected. The first four fish species listed on this chart are those with the highest mercury content. MERCURY LEVELS IN COMMERCIAL FISH AND SHELLFISH