Fish oil supplements are derived from the tissues of oily fish, such as salmon, mackerel, trout, herring, sardines, and anchovies. These supplements are rich in omega-3 fatty acids, particularly eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), which have numerous health benefits. https://www.zotezo.com/ca/top/best-fish-oil-supplements-in-canada/