To assess the influence of the breeding structure on the effectiveness of sexual inversion, growth performance and economic returns of Bouaké strain of Nile tilapia Oreochromis niloticus, hormonal treatment with 17-α-méthytestosterone was performed snapped installed in concrete basin (lot I), in happa) implanted in earthen pond (lot II) and concrete basin snapped without (lot III). The success rate of sexual inversion is 100% male in the three lots. The final average weights recorded were 2,35 ± 0,24 g (lot II), 2,06 ± 0,72 g (lot I) and 1,53 ± 0,65 g (lot III). The daily growth and the specific growth rate significantly different only between the Lot II and Lot III. The survival rate, the nutrient ratio and condition factor were not affected by the farming structure. The cost of producing a fry of 5 g recorded for Lot III (19,82 ± 0,40 F CFA) was significantly (p <0,05) higher than that obtained in the lot II (14,59 ± 1,49 CFA) and to that noted in the lot I (16,12 ± 0,10 F CFA). Profitability indices are 2,4 ± 0,25 for Lot II, 2,17 ± 0,12 for Lot I and 1,76 ± 0,25 for Lot III. The best results were recorded at the happas implanted pond followed by those installed in concrete basin.