The study aims to determine the effect of giving probiotic Nitrobacteri with different doses on the growth and survival of freshwater pomfret (Collosoma macropomum). This study used a completely randomized design (CRD) method consisting of 5 treatments with 3 replicates each, namely P0 (control), P1 (0.20 m/L), P2 (0.25 m/L), P3 (0.30 m/L) and P4 (0.30 m/L) carried out from July to August 2023.…