Author's accepted version (post-print).This is the peer reviewed version of the following article: Vargas, C.C., Peruzzi, S., Palihawadana, A., Ottesen, O. & Hagen, Ø. (2015). Muscle growth of triploid Atlantic cod juveniles (Gadus morhua). Aquaculture Research, which has been published in final form at http://dx.doi.org/10.1111/are.12879. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving (http://olabout.wiley.com/WileyCDA/Section/id-820227.html).