Fish oil is rich in omega-3 fatty acids – EPA and DHA. The fish oil being a good source of essential fatty acids shelters two important contents called EPA (Eicosapentaenoic acid) and DHA (Docosahexaenoic acid). These two Omega-3-fatty acid contents commonly having the PUFA nature decrease the cholesterol levels in the arteries and there by reduce the risk of heart disease. Fish oil also is found to be the cheap source of vitamin A, D and E content. Fish oil is also used for its medicinal value in pharmaceutical and scientific research areas. Fish oil also finds its application as drying oils, varnishes and also in paint industries.