There’s no question that wild salmon tastes better and contains fewer contaminants (industrial chemicals) than farmed. “Consumer Reports” magazine recently produced an article revealing that it’s difficult to know which you’re buying, regardless of labeling. And you can’t tell by the color, because the farmed fish are fed food that gives them a “real” salmon color.
Mislabeling is said to be most common during the off season for wild fish. So buy wild salmon during the season (May through September), when their labeling is most likely to be accurate.