Not a few countries around the world are facing the crisis of the exhaustion of fishing resources in their ocean areas and inland seas due to illegal fishing and overfishing. Japan's fisheries management and breeding technologies are widely acknowledged to be among the world's best. I believe that we should be more active in contributing to international society by making wider use of these strong suits. Taking Southeast Asia as an example, in this article I think about what Japan could do for the conservation of fisheries.