Various levels of  Jerusalem Artichoke Tubers (Helianthus tuberosus L.) (JAT) powder and Sprout Germinated Barley (SGB) powder were added to diets of young common carp fish (Cyprinus carpio L.) with a content of 30% of crude protein in this study to detect their effect on growth performance, for a period of ten weeks. It's a Weight Gain (WG), Daily Weight Gain (DWG), Relative Growth Rate (RGR) and Specific Growth Rate (SGR), and feed utilization, it's a Feed Conversion Rate (FCR), Feed Efficiency Rate (FER) and Protein Efficiency Ratio (PER). The (JAT) powder was added at the rate of 2.5, 5 and 7.5 g/kg, for the first, second, and third treatments, respectively, and adding (SGB) powder 2.5, 5 and 7.5 g/kg for the fourth, fifth and sixth treatments, respectively, then control without addition, The third treatment 7.5 g/kg JAT outperformed significantly p<0.05 for all parameters over all treatments, and this significant p<0.05 superiority involved the sixth 7.5 gm/km SGB treatment for two criteria were WG and RGR, and did not differ significantly p<0.05 from the rest of the trial treatments, except for the control group which decreased significantly p<0.05 for all treatments and for all criteria. The feed utilization criteria significantly p<0.05 outperformed both the third treatment, 7.5 gm/kg JAT and the sixth treatment, 7.5 gm/kg, for the terms FER and PER. And criteria FCR, the same treatments recorded the best ratios for feed transfer significantly p<0.05 on all transactions, while the worst one was the control significantly p<0.05 for all treatments and all criteria.

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