Abstract: The experiment of fish production in solar heated ponds was carried out in an arch shaped greenhouse at farm complex of Central Institute of Freshwater Aquaculture, Bhubaneswar (Latitude-20°15`, Longitude-85°52` and altitude 33 m above mean sea level) where the climatic condition is warm and humid. Experiments on carp polyculture with prawn during winter periods from 28 October, 2002 to 27 March, 2003 have shown the production levels of 6204-7767 kg/ha/year for carps and 92.5-97.3 kg/ha/year for prawns under greenhouse conditions against 3327-3935 kg/ha/year for carps and 43.8-77.9 kg/ha/year for prawns in open condition. Trials on carp polyculture indicated that higher production levels of 202% for fish and 156% for prawn could be achieved in greenhouse ponds as compared to outdoor ponds. Growth and survival of fish and prawn were higher in greenhouse ponds (fish mean growth 311.0 g with 86% survival; prawn 11 g with 17.6% survival) than open ponds (fish growth 216.5 g with 75% survival; prawn 7 g with14% survival) during the experimentation.