Abstract: Present study was conducted for a period of 156 days (February to July, 2010) in three earthen ponds of each 10000 m² area in different salinities. P. monodon seeds were stocked at a density of 15 nos m^-2 in all the ponds. The water quality parameters, such as temperature, salinity, hydrogen ion concentration (pH), dissolved oxygen and alkalinity were monitored. The alkalinity at pond 1-3 showed a significantly value (60-130, 180-230 and 220-260 ppm) at 86 DOC. The pond 2 showed higher survival rate than that of pond 1 and 3. The survival at the time of harvest was 86.6% for pond 1, 95.6% for pond 2 and 72.6% for pond 3 at 142, 114 and 156 DOC, respectively. The Average Body Weight (ABW) gained during the 114 DOC was 33.16±0.83, 23.44±0.62 and 17.83±0.28 g for pond 2, 1 and 3, respectively. The Average Daily Growth (ADG) at the time of harvest was 0.23 g for pond 1, 0.29 g for pond 2 and 0.17 g for pond 3 at 142, 114 and 156 DOC, respectively. Among the ponds, Feed Conversion Ratio (FCR) was found to be lower in pond 2, followed by pond 1 and 3. A similar trend was observed for Specific Growth Rate (SGR), also in which pond 2 showed 37% higher SGR than pond 3 and 29.31% higher than pond 1. Pond 2 obtained higher harvested biomass of shrimps at lesser DOC (4928 kg in 114 DOC) than pond 1 (4390 kg in 142 DOC) and pond 3 (3150 kg in 156 DOC). The Revenue Over Investment (ROI) was maximum for pond 2 (99%), followed by a moderate ROI at pond 1 (60%) and the least was for pond 3 (10%), respectively.