Identify a fish-oil dietary supplement by its stated source and actual ingredient panel. The Omega 3 Fish Oil Concentrate listing provides one clearly named example. Compare the amounts per labeled serving, the number of softgels required and any separately listed EPA or DHA. Another product described simply as an oil or an omega formula may have a different source, format or combination of ingredients.View Omega 3 Fish Oil Concentrate – 2,000 MG (120 Softgels).