The study presents BFT fattening socio-economic impacts on Mediterranean major BFT fishing fleet and the major fattening region. Impacts on fishermen are mainly: BFT price increase, modernisation, concentration of the fleet and integration of BFT fatteners. Positive impacts on Murcia region are observed on small scale fisheries, exportation and regional economy, while impacts on tourism, coastal management and environment are detailed. Is BFT aquaculture complete cycle production a future sustainable activity? In the context of world competition the question is even more acute as BFT fattening seems to pass from a pioneer profitable phase to a less profitable phase with increasing risks. Common priorities of socio-professionals and regional officers are presented.