The promotion of Aquaculture requires the control of parameters. In addition to the technical and economic parameters which are very important, market investigations require specific norms of competitiveness, becoming more and more dependent on the quality of the products sold. The progressive competitiveness of aquaculture production in several advanced countries has urged Tunisia to establish a global and coherent strategy for the development of the sector. Towards this aim, the Master Plan for Aquaculture has been built, carrying out ambitious objectives and directly involving the whole staff. This communication will deal with the commercial strategy by sub-sector as proposed in the framework of this Plan.