Abstract: The objective of this study was to determine the impact of upstream exercise training on feeding efficiency,growth,and nutritional components of juvenile tinfoil barb Barbodes schwanenfeldi (weight 75.21?2.82 g).The experiment included two stages,1-23 d and 23-45 d.After water current treatment(0 BL/s,0.7 BL/s,2.0 BL/s)for 45 d,the daily feeding ratio(FR)increased significantly with increasing water velocities.The maximum values of the body weight specific growth rate(SGR),body length SGR and feed conversion rate(FCR)were in the water current of 0.7 BL/s,the second maximum values of those were in 0 BL/s and the minimum values were in 2.0 BL/s,with significant differences among the three(P<0.05).No significant difference in crude ash and water contents in muscles was observed among the treatments with various water velocities(P>0.05).The protein contents of fish muscles increased greatly with the increase of water velocities,while the lipid contents of muscles dropped with increasing water velocities.At the end of the experiment,the contents of total amino acid(TAA),essential amino acid(EAA),and delicious amino acid of the fish treated with the water velocities of 2.0 BL/s were 82.63%,34.34%,and 33.50%,respectively,being significantly higher than respective values of controls(78.27%,32.6%,30.63%)(P<0.05).Our result indicated that the lower water currents(0.7 BL/s)could effectively promote growth of juvenile tinfoil barb,improve feed conversion rates,and increase protein contents of fish muscles.The exercise training under the high flow(2.0 BL/s)was unsuitable to growth,but it could increase the contents of EAA and delicious amino acids in muscles of juvenile tinfoil barb.The result could provide basis to improve culturing conditions and nutritional quality of tinfoil barb B. schwanenfeldi.