This study concerns the different impacts of the closed fishing season on the value chain nodes of the coral reef and small-pelagic and tuna fisheries. The professional practices includes actual interview sampling in the different fisheries markets in Davao Gulf, Mindanao as well as economic analysis in terms of incomes and expenditures at the different nodes of the value chain and how the closed fishing season may have decreased or increased this value along the nodes of the value chain upon implementation. By using the framework of value chain, this enables us to determine the different players/actors involved in the chain, their roles, their capacities and how they add value to the fish products. Other analyses involved would be related to income distribution along the chain from the fishers to the market vendors, who gains and who losses with the product distribution. This would be useful in terms of determining the socioeconomic impact of the closed fishing season in the value chain.