Similar title to Skilbrei, O.T. & Heino, M. ORCID: https://orcid.org/0000-0003-2928-3940 (2011). Reduced daylength stimulates size-dependent precocious maturity in 0-plus male Atlantic salmon parr. Aquaculture 311 (1) 168-174. 10.1016/j.aquaculture.2010.12.004.