As I read more articles about the negative aspects of poorly designed and regulated aquaculture farms, I am inclined to stick with US wild caught, cold water fatty fish sources or fall back on a fish oil supplement like Carlson's or Nordic naturals as uncontaminated Omega 3 fatty acid sources. Frankly I depend on fish oil/cod liver oil as my predominant source of dietary O 3 fatty acids.
Here's a recent story from the Boston Globe regarding the farming of salmon on the Atlantic coast.
"Atlantic farms used to give salmon mostly fish meal and fish oil, but have switched to a pelleted dry food made up of soybeans, wheat, and corn, along with fish oil. Feeding has become more efficient and now, according to Belle, the fish products make up only about one-third of the diet."
I wonder what percentage of the salmon sold in the US in farm raised?