In traditional composite pisciculture, single cropping pattern with one time monsoon stocking and one time summer harvesting method is followed leading to a low yield of 13 q fish / ha / year. Generally, IMCs viz. catla, rohu, mrigal grow faster after 5 months upto 20 months of age just before attaining their sexual maturity. The fry size IMC seeds are when kept in an adverse competitive environment (where competition for food & space prevails) by stocking them in high density i.e. 30 to 40 number per cubic metre, managed judiciously in a rearing tank for 5 months or more, they become stunted and exhibit absolute compensatory growth when released into congenial conditions of grow-out ponds. The fishes which attain ABW of 500g (marketable size) or more after 2.5 to 3 months of rearing are to be harvested. After each harvesting, the stock has to be replenished with new SFLs/SYLs harvested from nearby rearing tank. In this way, annually 3 to 4 major crops harvested with an average yield of 50q fish / ha / year.