This study was carried out to determine the effect of various vitamin C levels on growth parameters (percentage of body weight increase, specific growth rate and survival) of whitefish Juveniles (Rutillus kutum). Four treatment groups including one control and three vitamin C doses (300, 900, and 1700) were studied in three replications for eight weeks. Biological assay of fishes was done every two weeks. At the end of experiment, growth and survival rates were calculated. Statistical analysis was done using one way anova and means were compared using Duncan and Tuckey testes. According to results, there was no significant difference between treatment (p>0.05), therefore vitamin C could not affect fishes or the differences were not significant.