Author: Jonathan Kesh

As a general rule, small, short-lived, non-predatory fish low on the underwater food chain have the lowest amounts of mercury. Smaller fish like sardines aren’t big enough to eat more than plankton, and fish like the famous tilapia eat a lot of algae, for example. Longer-lived predatory fish, such as tuna, have higher mercury levels because they eat many small fish with small amounts of mercury, which then accumulate in larger, longer-lived fish. live fish In other words, the higher up the food chain you go, the more mercury you consume. Tuna live for about 15 years, so mercury builds…