There seems to be a correlation between standard metabolic rate (SMR) and other physiological traits (e.g., swimming performance and feeding metabolism) in fishes under either natural habitats or artificial rearing conditions, which attract many researchers to study. Like other behavioral traits, mass-specific SMR (or maintenance metabolism) also varies greatly among individuals. To our knowledge, most studies on these correlations between SMR variation and other physiological traits (e.g., swimming performance and feeding metabolism) focused on the genus Oncorhynchus and Salmon, and those reports on the cyprinid fish are seldom. The objective of present study was to investigate the intraspecies differences in SMR, and its potential relationships with locomotion performance and feeding metabolism in the cyprinid fish. To address our research goals, juvenile common carps (Cyprinus carpio) (body mass: 4.79 ± 0.08 g, n = 36), a fresh water species, which are widely distributed in the rivers, lakes and other water bodies in the China, were used as experimental model and acclimated at 25.0 ± 1.0 oC. Each fish individual was transferred to a respiratory chamber within a continuous-flow respirometer (11 chambers per respirometer), and the SMR of each fish was measured by using a dissolved oxygen meter (HQ20, Hach Company, Loveland, USA). Then, the specific dynamic action (SDA), spontaneous swimming behaviour, critical swimming speeding (Ucrit) and active metabolic rate (MO2active) of the fish were also examined by using both the Blazka-type swimming tunnel respirometer and the continuous-flow respirometer. All correlations between SMR and other parameters were performed with the partial correlation analysis. All values are reported as the mean ± 1 SE, and P < 0.05 was used as the level for statistical significance. The software SPSS (19.0, USA) was used for the data analysis. Our results showed that the SMR of the C. carpio ranged from 76.7 to 317.6 mg / (kg?h) with a CV of 24.4%. The average caudal fin beat bout during 10 minutes observation period (Fig.1 P<0.05) and the peak metabolic rate (Fig.3A, P<0.05) during feeding metabolism were positively correlated with SMR. Additionally, the positive correlations between MO2active and peak metabolic rate (Fig.4A, P<0.05), and metabolic scope for locomotion and metabolic scope for feeding metabolism (Fig.4B, P<0.05) of this fish species were also found. However, relative critical swimming speeding, MO2active, SDA duration and total energy expended on SDA were all not related to their SMR (Fig.2, all P>0.05). The present study suggested that common carp individuals with higher SMR exhibited higher levels of activities and higher digestive capabilities, indicating these correlated physiological traits may benefit it to forage or avoid predator and enhance the ability to food processing.