Experimental Design
The experimental was conducted in eight glass aquaria each having 50 L of filtrate pond water with 15 fish
(Cypriruns carpio fry, mean weight 1.5. ±0.2gm, n=15) per aquarium. The fry were procured from a local fish farm
and acclimatized to the laboratory conditions for 48 hours prior to the commencement of the experiment. Fifteen
fishes were used for analysis of initial whole body proximate composition. The fry were randomly distributed at the
rate of 15 fish per aquaria with three replications for each diets treatment. Aeration was continuously provided from
air compressors through air stones daily and about 50% water from each aquarium was replaced with clean stored
pond water. The aquaria were maintained indoor and natural photoperiod conditions. The experimental fish were fed
twice daily at morning and evening at a fixed feeding rate of 5% of the total biomass for a period of 120 days and
during this period certain physico-chemical parameters were recorded (Table-1).