http://www.thisisms.com/forum/regimens- ... ml#p191795
Comparison of the effects of fish and fish-oil capsules on the n–3 fatty acid content of blood cells and plasma phospholipids
http://www.ajcn.org/content/86/6/1621.short
in that study, they found that eating oily fish twice a week or taking fish oil every day was about the same, with the fish being a bit more effective.