The growth and feed utilization data are presented in Table 2. Final body weight (FBW),WGR and FE in fish fed diets with 0.3, 1.5 and 16.1 mg Cu kg−1 were significantly lower (P b 0.05) than those in other treatments. The significantly highest (P b 0.05) FBW and WGR values were observed in the 6.2 mg kg−1 treatment. Fish survival (88.3–98.3%) was not significantly affected by dietary Cu levels (P N 0.05).