For improving the hydro-stability of pelleted feed of juvenile Beluga in confined area and its growth performances, an nutritional experiment was conducted for 60 days duration, using sodium bentonite as a binder. In this experiment, four treatments with a level of 0,.,1,1.5 and 2 percent with iso-nitrogenus(45±.61) and iso-lipedic(16±.77) were formulated and feed to triplicate group of fish. Two-hundred juvenile Beluga of size (27/22±2.6g) were randomly selected and distributed between 12 fiber glass tanks of 500L capacity. Growth performances in the term of R.G.R, F.E.R,P.E.R and S.R were improved with increasing of sodium bentonite at 1.5% level and showed significant differences with other treatments (P<0.05). Treatment 1 and 2 was not showed any differences statistically (P>0.05). The poor growth performances and feeding efficiency were found in treatment 1(without sodium bentonite ). Body carcass composition ,except ash content, did not show noticeable significance differences between treatments (p>.05). In general, treatment 4 with 1.5%level sodium bentonite was shown to be the most reliable one.