The top 10 healthy fish to include in your diet: Salmon. Salmon is versatile and one of the best sources of omega-3 fatty acid, which is essential as the body cannot make it on its own so it must be obtained through food. ... Mackerel. ... Cod. ... Trout. ... Sardines. ... Crab. ... Haddock. ... Tuna. More items... Sep 6, 2021