European sea bass Dicentrarchus labrax aquaculture has been strongly increasing for the last ten years. This rapid expansion has lead to problems of superabundance and particularly to a fall in prices. Unlike France, several Mediterranean countries (Greece, etc.) have significant advantages for a competition based on mass production, such as climate, site availability or salaries. Moreover, the productivity run and the use of more and more fatty feeds have a direct influence on fish flesh quality. At the same time, since the recent problems with animal feed, consumers have become more sensitive to food safety, to the origin and production methods of what they eat. Facing this economic and social environment, the SNAMM, a group of Mediterranean French fish farmers belonging to the ICM Group, which currently represents a production of around 600 tons, are trying to reject a market based only on price level that pushes farms down.