It's important to note that aquaculture rearing technology has evolved rapidly as a result of the modifications of existing farming facilities (e.g.water recirculation for land based installations) and the development of new farming concepts. AS a consequence of such developments,nowadays,in the Mediterranean area a wide-range of production activities of marine species co-exist indifferent environments using a variety production technologies; from extensive mollusc or fish production to highly intensive raceways or netcage fish farming. In Tunisia, the most developed facility is the marine intensive fish farming in inland based tanks using a flow-though systems where water is pumped from the sea. The main specie being production of 2500 tonnes per year. How assess the environmental burdens associated with Tunisian aquaculture systems