Abstract: A culture experiment was conducted to see the effect of different stocking densities on production of stinging catfish (Heteropneustes fossilis) in earthen ponds for a period of four months. Four different stocking densities were tested, namely treatments T1 (40,000 individuals ha-1), T2 (60,000 individuals ha-1), T3 (80,000 individuals ha 1) and T4 (1,00,000 individuals ha-1) and each have two replications. The initial length and weight of the fish were 5.13 cm and 0.7 g respectively. Significantly (P<0.05) highest weight was found in T1 and T2 (52.64 and 51.84 g respectively). Best survival (98.81%) was found in T1, which was also significant (P<0.05). Whereas significantly (P<0.05) highest production was obtained in case of T3 and T4 and it was 3189 kg ha-1 and 3364 kg ha-1 respectively. Marginal analysis was done for economic analysis. Marginal rate of return for changing from T1 to T2 was 74%, T2 to T3 was only 1% and T4 was a dominated treatment. So among the treatments in four months of culture experiment of stinging catfish (Heteropneustes fossilis), 60,000 individuals ha-1 stocking density (T2) would be the best recommendation for farmers.