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This study was carried out to evaluate the effect of different sources and levels of carbohydrate (glucose and corn starch) on growth performance and carcass composition of juvenile Siberian sturgeon (Acipenser baerii). Two weeks after acclimatization period to rearing conditions and basal diet, the number of 120 Siberian sturgeon juveniles weighing 25.64 ± 2.80g were randomly distributed into 12 fiberglass tanks in four treatments (glucose 15%, glucose 30%, corn starch 15% and corn starch 30%) in three replicates and kept at a density of 10 fish per tank (one fish per 35 liter) for a period of 8 weeks. Results showed that final weight, final total length, percentage of body weight increase, specific growth rate, mean daily growth, protein efficiency ratio and condition factor in fish fed corn starch 15% were high in comparison with other treatments (P>0.05). Fish fed corn starch 15% had the lowest (P>0.05) food conversation ratio. Significant difference was seen between fish fed corn starch 30% with fish fed glucose 15% in HSI (P0.05). The highest content of carcass protein was seen in corn starch 15% that showed significant difference with treatments glucose 15% and 30% (P

Keywords: (Acipenser baerii), Siberian sturgeon (Acipenser baerii), Growth performance, glucose, corn starch

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