The study was conducted to evaluate the comparison of production performance and economics of different carp polyculture systems in Gangni Upazila under Meherpur district from July to November 2015. PRA tools such as questionnaire based interview, cross check interview etc. were used for primary data collection and secondary information were used to assess the performances in aquaculture activities. Forty pond fish farmers were randomly selected, among them 7 (18.0 %), 17 (42.0 %), 3 (8.0 %), 7 (18.0 %) and 6 (15.0 %) farmers were engaged with carp-mola, carp-tilapia, carp-koi, carp-shing polyculture and carp fattening, respectively. Only 23 % farmers had small ponds (5dec -15 dec), 35 % medium (16 dec-25 dec) and 40 % had large ponds (above 25 dec). The minimum water depths of 23 % ponds were within 0. 5m -1.0 m, 53 % were 1.00m-1.5 m, 17 % were 1.6m -2.0 m and 7 % were up to 2.0 m. From the survey, it was found that 14 (35.0 %) of the farmers applied supplementary/homemade feed prepared with rice bran and mustard oil cake, 17 (43.0 %) farmers used commercial feed and 9(22.0 %) farmers were depended on natural feed. Average fish production of the farmers was 6274 kg ha-1 yr-1. The calculated highest fish production 7,904 kg ha-1 yr-1 and net income was BDT 2,42,060 ha-1 yr-1, respectively in carp-tilapia polyculture system. The lowest fish production was 5,187 kg ha-1 yr-1 and net income was BDT 1,66,478 came in carp-koi polyculture system. From the result of present study, it is clear that fish production and financial benefit in carp-tilapia polyculture were higher than others. The present findings reveal that carp-tilapia polyculture system is more suitable and profitable culture system than other polyculture systems existing in Gangni upazila of Meherpur district.