Optimal stocking density of Catla catla and Labeo rohita fry in pen based nursery management system in reservoirs had been evaluated in the present study. The study was conducted in four selected sites . Bendharwadi, Savarli-1, Savarli-2 and Dighad in Dimbhe reservoir, Pune District, Maharashtra. C. catla and L. rohita fry of 48-57 mm and g were stocked in the ratio of 1:1 and reared for 55 days under four stocking densities: , 12, and 16 fry per m2 respectively in pens installed in Savarli-2, Bendharwadi, Dighad and Savarli-1sites. | Effect of stocking density on the growth survival and yield of carp fry reared in pens