Mean stable isotope values and time in captivity for all Pacific bluefin tuna (<i>Thunnus orientalis</i>) used in this study. <i>δ</i>¹³C′ values are arithmetically-corrected for lipid content based on tissue- and species-specific (<i>Thunnus thynnus</i>) algorithms from Logan et al. [51

Isotope values and change in mass (Δmass) reported as mean (SD).