Not all fish are good for you. http://health.yahoo.net/experts/eatthis/5-fish-you-should-throw-back?vm=r Last year, the USDA increased its seafood recommendation to 8 ounces per week, and that has led many to believe that all fish are equally smart choices. But some are so high in contaminants like mercury that their health benefits are outweighed by their health risks. Others are flown in from halfway around the world, but given labels that make you think they were caught fresh earlier that morning. And still others are raised in filthy, overcrowed pools and loaded up with chemicals to keep them alive. So let me shed light on some very rough waters. Put these fish at the top of your don't-eat list and you'll avoid most of the troubles of the world's fishing industry. #1: ATLANTIC BLUEFIN TUNA Why It's Bad: A recent analysis by The New York Times found that Atlantic bluefin tuna has the highest levels of mercury of any type of tuna. To top it off, bluefin tuna are severely overharvested, to the point of reaching near-extinction levels, and are considered "critically endangered" by the International Union for Conservation of Nature. Rather than trying to navigate the ever-changing recommendations for which tuna is best, consider giving it up altogether. But if you can't . . . Eat This Instead: Opt for American or Canadian (but not imported!) albacore tuna, which is caught while it's young and doesn't contain as high levels of mercury.