Trawling is an important fishing method used by the fishermen in the Turkey. Bottom trawling fisheries in this part of Mediterranean are essentially multispecies. Commercial fishing vessels use 44 mm diamond shaped mesh for trawl cod-end s in the Mediterranean Coast of Turkey. The trawl nets (cod-end) of the fishery retain a lot of juvenile individuals, which has negative effects on the population of fish species. Currently fishing boats use very low selectivity gears. Because of this reason, fishing ground is predominantly overfished. Although there are many selectivity studies carried out in the Mediterranean coast of Turkey, selectivity experiments results have not used into practice for management of fisheries yet.