The Verdict:
Both wild-caught and farm-raised fish have their pro's and cons.
The levels of these nutrients differ between wild-caught and farmed fish. If we look at salmon, for instance, the farmed variety offers slightly more protein (23g in a 113g fish) than is found in wild salmon (22g in a 113g fish). The opposite is true of minerals; wild salmon contains more calcium (39mg in wild salmon versus 10mg in farmed) and iron (1mg in wild salmon versus 0.3mg in farmed).
Omega 3s and Omega 6s are found in both types of salmon. However, the amount of each varies depending on the salmon’s origin. A study from Purdue University analysed fish available to consumers across the United States and found that farmed fish typically has a higher fat content than wild fish, which is due to the ingredients in their feed. The researchers concluded that farmed fish contains more Omega 3 and Omega 6 overall.
