By Brierley Wright
You probably already know that you're supposed to be eating fish twice a week. Fish are a lean, healthy source of protein—and the oily kinds, such as salmon, tuna, sardines, etc.—deliver those heart- and brain-healthy omega-3 fats you've probably also heard you should be getting in your diet.
But then there's also this concern about sustainability—and choosing seafood that's sustainable.
So, if you're like me, you often stand at the fish counter a little perplexed: what's good for me and the planet?
Fortunately, Seafood Watch, the program run by the Monterey Bay Aquarium, has combined data from leading health organizations and environmental groups to come up with their list "Super Green: Best of the Best" of seafood that's good for you and good for the environment.
To make the list, last updated in January 2010, fish must: a) have low levels of contaminants—below 216 parts per billion [ppb] mercury and 11 ppb PCBs; b) be high in health-promoting omega-3 fats; and c) come from a sustainable fishery.
Check out the slideshow above for 6 fish you should eat and 6 you should avoid.