We see a lot of farm raised fish in the grocery stores these days but if you are wanting the health benefits of omega 3 fatty acids you won’t find them in these grain fed fish. Grains contain primarily omega 6 fatty acids which are inflammatory, as opposed to anti-inflammatory omega 3’s. Omega 3’s are found in the meat of fish that eat green food like kelp and seaweed, not corn.
Grass fed cattle and wild game also have more omega 3 fatty acids than grain fed. Reducing our personal grain intake and increasing the amount of vegetables we eat will also help balance our omega 3 to omega 6 ratio, as well as supplementing with fish oil.
Of course mercury is a valid concern with ocean fish so look for the types of fish that generally absorb the least amount.