Even though that is stereotypical, it is true. It is called an essential fatty acid because it is essential for our body, but our body just doesn't produce it so we have to get it from another source, which is most likely fish. The essential fatty acid omega 3 is found in fish but a constituent of it is DHA which is found in a mother's breats milk (which is now barely being put into actual milk) but the DHA in omega 3 is for overall brain health and it helps the person focus more and helps memoriazation because it does make you smarter. That's where the theory comes from about breast feeding your child because it's good for their brain development, which in turn makes them smarter. So yes it is true about asian being more smarter because the get alot of omega 3 from fish.