Fish oil is derived from the tissues of oily fish and is a rich source of omega 3 fatty acids EPA and DHA. Fish does not produce omega 3, it only stores omega 3 produced by microalgae. DHA is the building block of cellular membrane and is important for optimum brain functions. Omega 3 is essential for the human body and must be obtained through diet. Fish and seeds like flaxseed, walnuts are a rich source of omega 3. Best naturals fish oil is a convenient and Easy to consume of obtaining these nutrients without having to consume large amounts of fish, anytime, anywhere.