In nature, consistent individual differences (CIDs) in phenotypic traits (e.g., morphology, physiology, or behavior) are a widespread phenomenon in animals. CIDs in phenotypic traits are maintained over time, and can be measured by repeatability at different times. We used juvenile Chinese bream (Parabramis pekinensis) as an animal model to determine individual variation and correlation between energy metabolism and personality behaviors of cyprinid fish. Under conditions of (25±0.5)℃, the standard metabolic rate (SMR), maximum metabolic rate (MMR, induced by exhaustive exercise), and excess post-exercise oxygen consumption (EPOC) of fish were determined, and the metabolic scope (MS) and factorial metabolic scope (FAS) were also calculated. Personality behaviors, including boldness (indicated by latency), activity (indicated by distance moved, average swimming velocity, and percent time spent moving) were measured for individuals (trial Ⅰ). All of the aforementioned phenotypic traits were measured again after one month (trial Ⅱ). The results showed that both body mass and body length of juvenile Chinese bream increased substantially, and these two morphological parameters showed good repeatability during the experiment (both P < 0.05). Only the SMR of fish was repeatable, and not MMR, MS, FAS, and EPOC. SMR was negatively correlated with MS, FAS, and EPOC (all P < 0.05), and showed no correlation with MMR. MS had a positive correlation with both FAS and MMR (both P < 0.05). The direction of some correlations between components of energy metabolism of the juvenile Chinese bream did not change during the course of experiment. Boldness (indicated as latency) of the experimental fish did not exhibit repeatability, and was significantly higher in trial Ⅱ than in trial Ⅰ (P < 0.05). The latencies of the two measurements were not correlated with SMR. In addition, distance moved, swimming velocity, and percent time spent moving were also not repeatable. However, the relationships among these three activity parameters were all positive in spite of the effects of time. When compared to those of trial Ⅰ, the values of the three parameters of activity all increased in trial Ⅱ. SMR in the two trials were positively related to the specific growth rate (SGR) in this fish species during the course of experiment. The present study suggests there were nonparallel changes in tendency and repeatability between the energy metabolism and personality behaviors of juvenile Chinese bream under artificial rearing conditions where environmental parameters were spatially and temporally predictable. Some correlations existed between the phenotypic traits and were substantially affected, to different extents, by environmental conditions. SMR of juvenile Chinese bream may predict their growth trajectory during their juvenile stage.