2. Justification Since the consumption of marine fish have high omega-3 fatty acid and showed the reduction of death by CVD, there is no record about the content of omega-3 fatty acid in fresh and brackish water fishes and effects on consumption of fresh and brackish water fishes by South Asian population. Nearly 50 % of population of Sri Lankan consume Inland fishes and it is not known the lipids content, omega-3- fatty acids and tocopherol in muscle of these fishes. This would be first study to understand the content of type of lipids , omega-3 fatty acids, tocopherol and the relationship with fish consumption and CVD. This research will identify the formula of cooking and consumption method of fish.