Kirkland Signature Natural Fish Oil Concentrate 1000 mg with 300 mg Omega-3 Fatty Acids - 2/400 Softgels - Total 800 fishes come from the ocen and not from farm-raised fish. State-of-the-art molecular distillation process is used to remove mercury, PCBs and dioxins, which guarantees purity and potency with reduced fish odor. The fish oil is derived from a variety of fish species, to maximize omega-3 fatty acid concentration.