Abstract
The experiment was conducted by using four predator-prey (Channa marulius : Oreochromis mossambicus) stocking ratios of 1:10, 1:20, 1:30 and 1:40 in eight earthen ponds. Both the predator and prey species were stocked for one year in fertilized ponds at densities of 40:400=440, 40:800=840, 40:1200=1240 and 40:1600=1640 under T1 , T2 , T3 and T4 respectively. Fertilization was done @ 28 kg nitrogen and 7 kg phosphorus ha 1 week" throughout the experimental period. The results of present study revealed that the highest percentage 18.85± 1.32% of crude protein contents were observed in the flesh of Channa marulius with T3 in which fish gained maximum weight as compared to all other treatments. Moisture contents were higher with T1, in which fish gained minimum weight as compare to all other treatments. Statistical analysis showed that there was a non-significant difference for all the recorded parameters of proximate body composition i.e. moisture, crude protein, total fat, total ash and carbohydrates, among all treatments. The organoleptic evaluation showed that T3 earned highest score points for color, taste, texture and softness than T1, T2 and T4 which was due to the sufficient availability of Oreochromis mossambicus offsprings as a food of Channa marulius
