Nitrogen stable isotopes are widely used in ecological studies to estimate trophic position and determine movement patterns, but turnover rates of isotopes in animal tissues remain poorly understood. Here, we report nitrogen isotope turnover rates in different tissues of golden carp (Cryprinus carpiod). Turnover rate was estimated from the dilution of a ¹⁵N label introduced into consumer tissues by feeding of ¹⁵N-enriched cyanobacteria. The δ¹⁵N values of the four tissues varied significantly after a ¹⁵N enrichment diet feeding. Liver ((19.3±1.4)‰) was significantly enriched in ¹⁵N relative to fin ((15.6±1.0)‰) and blood ((12.6±0.4)‰) tissues, and muscle ((9.9±0.7)‰) had the most depleted ¹⁵N. Muscle tissue had the slowest turnover rates (3.8%/d), with half-lives of approximately 18.4d following a return to a diet with no ¹⁵N-enriched cyanobacteria addition, while the shortest half-life value for δ¹⁵N was in fin tissue (6.1 d). The exponent of metabolic decay, c wasn't significantly different from -1 for δ¹⁵N in all the tissues, demonstrating that growth accelerated the rate of isotopic change and caused tissue specific turnover rates. The results support that the enrichment-dilution approach can be properly used to assess the dietary shifts on isotopic turnover rate, and further show that fin and blood stable isotope analysis is a quick approach to track dietary switch in golden carp.