The aim of present study was to evaluate the growth and production of tilapia and bell pepper in an aquaponics system integrated with biofloc. The experimental trial was performed
for 120 days with different stocking densities of fish ie, 300 no./m3(T1), 350 no./m3 (T2) and 400 no./m3 (T3) in biofloc water and the control (C) with stocking density 150 no./m3in clear water. Each aquaponic recirculating unit consisted of a circular fish tank (250 L), a filtration unit and hydroponic tank of surface area of 0.25m2 filled with gravel for plants, submersible pump with pipe arrangement and ball valves. The average size of the fish at the time of stocking was 1.44±0.12 gm and 3.92±0.09 cm. Fish were fed with the commercial floating pellet of 24% protein. The plant stocking density was kept at 12 plants/m2 in all the treatments including control. At the end of experiment, production performance of fish and plant was analysed. The growth and production of the fish and crop were significantly higher in the biofloc integrated aquaponics compared to the clear water aquaponic. However, the study did not find any significant difference in growth and yield of the plants, in relation to varying stocking densities of fish. The study found significantly higher Percentage weight gain(6025.1±69.7a), Feed conversion ratio(1.29±0.04b),Specific growth rate(2.0334±0.07c), Protein efficiency ratio(3.6±0.31a) and final biomass (26.66±0.26a) of fish reared in T1 (300 no./m3) followed by T2 (350 no./m3) . Overall, the results of present study recommend that a stocking density between 300 no./m3 -350 no./m3 of is optimum for better production of GIFT strain of tilapia in a biofloc integrated aquaponics with an ideal production of bell pepper plant.