Are there differences in omega-3 fatty acid content between wild fish and farm-raised fish?
Some farmed fish can have higher levels of omega-3 fatty acid than wild fish, and vice versa. The omega-3 fatty acid content of wild fish can vary by the temperature of their environment (i.e., higher during the summer than winter), while the omega-3 fatty acid content of farmed fish can vary based on what they are fed. The American Heart Association recommends eating fish at least twice a week, especially species high in omega-3 fatty acid such as salmon, mackerel, herring and trout, regardless of whether they are wild or farmed.