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¹ Ege University, Faculty of Fisheries, 35100, Bornova, Izmir, Turkey Viewed : 4735 - Downloaded : 3597 This study was conducted in Foça (The Aegean Sea) during the 1999-2000 fishing season. It reveals trawl fishery from socio-economic point of view. Economic and financial performance of trawl vessels were carried out and economic viability of fishing enterprises were discussed as well. Trawl vessels were divided into three groups according to capacity of fishing gear, and non-parametric test Kruskal-Wallis analysis was used to test the differences between these groups (p<0.05). Findings indicate that increasing fuel price adversely affected the financial results. Solely fuel made 41,3% of the operating costs of trawl vessels. This is six times more than that prevails in EU countries. In terms of profitability, 45% of trawl vessels had no profit at all. As there is strong connection between economics and management of fishery, managerial authorities should consider that fishery cannot be managed without monitoring economics situation and take into account of these kinds of studies. Keywords : Fisheries economics, fisheries management, trawl fishery, viability, the Aegean Sea