A report was released earlier this year by a researcher at the University of New Brunswick who interviewed traditional fishermen, who have obviously fished for 30 or 40 years. There is a very distinct pattern that fishermen observe when fish farms go in. Initially when the farm goes in, they notice some of the species they are interested in—lobsters, sea urchins, scallops, groundfish—move in. But as the organic load increases, the bottom becomes very toxic and the water quality is very poor. Those species are displaced and they disappear, and sometimes they don't come back. The fishermen have basically said, “We've lost some of those fisheries. We can't go after that species any more. We don't know where they are. They're not in our traditional fishing areas.”
On November 29th, 2011. See this statement in context.