The proximate composition of the biofloc and experimental diets were determined following the standard methods of AOAC (1995). Themoisture contentwas determined by drying at 105 °C to a constant weight, and the difference in weight of the sample indicated the moisture content. Crude proteinwas estimated by Kjeldahl method (Kelplus, Pelican equipments, India). Crude lipid was determined by the solvent extraction method by Soxtec system (Soxtec system, SCS–6, Pelican equipments, India) using diethyl ether (boiling point, 40–60 °C) as a solvent. Ash content was determined by incinerating the samples in a muffle furnace at 600 °C for 6 h. Crude fiber was determined based on the weight loss on ignition of the oven dried residue remaining after sequential digestion of a sample with H2SO4 and NaOH solution using Fibretec (Foss Tecator 2022, Sweden). Gross energy was determined as per the N.R.C. (1993). Total nitrogen free extract (NFE) was determined as per the formula described in Hastings and Dupree (1969).