This paper identifies the recent trends of processing and trading companies dealing in cultured yellow tail fin (Seriola quinqueradiata), focusing on their export business and management strategy. The paper has three specific objectives. Firstly, according to case studies having been conducted in Shikoku and Kyushu regions, the paper looks at how trading companies in production areas explored processing business and enlarged export is identified. Secondly, two selected cases in Kyushu region are analyzed. Lastly, the authors discuss the drastic change of the market structure in cultured yellow tail fin from the perspective of export business. The case studies may provide insight into how Japanese aquaculture should change its domestic-oriented nature to become more export-oriented. Mass production, reduction of costs, global standard-requirements such as HACCP (Hazard Analysis and Critical Control Point) and GAP (Good Aquaculture Practice) are substantial factors to accelerate export.
