An on-farm trial was undertaken in twelve earthen ponds (1200-1600 m') to evaluate the
growth and production of over-wintered fingerlings of rohu (Labeo rohita), catla (Carla
catla) and mrigal (Cirrhinus rnrigala) in polyculture at three stocking densities. The
stocking densities were 2,250; 3,250 and 4,250 fish/ha in treatment-1, treatment-2 and
treatment-3, respectively. Fish in all ponds were fed with rice bran and mustard oil cake
at the ratio of 3:1. Fish production obtained in three treatments were 2325±74.75,
2620±49.66 and 2982±171.52 kg/ha. The results demonstrated higher mean growth in
T-1 than in T-2 and T-3. However, the highest production as well as net benefit was
obtained in treatment-3
