The purpose of this research was to evaluate the impact of Jerusalem artichoke tubers (Helianthus tuberosus L.), a natural prebiotic, on the growth performance, proximate body composition, feed utilization, hematology, and biochemical parameters in common carp (Cyprinus carpio) fingerlings. Four JA-supplemented diets were formulated at 0.0% (control), 0.5%, 1%, and 2%. Fish were reared for ten weeks in cages placed in concrete ponds. Based on the results, an increase in the levels of JA supplementation led to significant improvements in growth and feed parameters (P<0.05), while the proximate body composition exhibited significant differences (P<0.05) between JA-supplemented-fed fish and the control-fed fish. The hematological profile showed that red blood cells, white blood cells, lymphocytes, hematocrit, hemoglobin, and mean corpuscular volume were significantly enhanced by supplementing dietary with JA at varying levels (P>0.05). However, the fish fed with a JA-supplemented diet exhibited significantly lower levels of red cell distribution width, red cell distribution, monocytes, granulocytes, mean corpuscular hemoglobin in fL, and mean corpuscular hemoglobin concentration (P<0.05). Biochemical indices revealed that fish in the experimental groups had significantly higher total protein, globulin, albumin, lipase, high-density lipoprotein, and amylase than the control-fed fish (P<0.05). The creatinine, glucose, triglyceride, cholesterol, urea, alanine transaminase, aspartate aminotransferase, and low-density lipoprotein were significantly decreased in JA dietary treatments than control diet (P<0.05). It was also found that dietary JA supplements promoted growth parameters, proximate body composition, hematology, and serum biochemical in common carp fingerlings.