The STRAITGIB project will develop a network in southern Europe of acoustic receivers. With the collaboration of IEO  the University of Algarve  and Csic has allowed the funding of a small-scale pilot systems of receivers network. This collaboration began in 2021. Four target species have been chosen. The blue fin tuna and the croaker, because are species with a high economic importance. They are great migrators on a global and regional scale. The eel has been chosen because it is endangered population. The fourth specie is the blue crab, invasive species with great impact on the fishing sector. Ifapa ( Andalusian institute of agriculture. Fisheries  research and training ) worked during the 2012 and 2013 in the Jacumar ( National marine culture advisory board) proyect “Proposals and improvements for the design of marine repopulation plans”