This table shows roughly how often pregnant women, other women of childbearing age, and young children can eat certain low-mercury species without consuming more mercury than the Environmental Protection Agency considers safe. Ranges are listed for children to account for differences in their weight. Older children and other adults can almost surely eat more than the corresponding amounts listed below without harm, but the exact quantities are not known. The table includes common fish for which adequate mercury data are available and levels of the metal are consistently low. There are probably other fish that can safely be consumed frequently as well. We plan to publish an update on salmon in a future issue of Consumer Reports. All recommendations below assume that no other mercury-containing fish are consumed during the same week.