Dataset on the performance of Atlantic salmon () reared at different dissolved oxygen levels under experimental conditions.

Atlantic salmon () cultivated in cages and net-pens are regularly exposed to natural variations in dissolved oxygen levels, occasionally experiencing events of low oxygen availability. Quantifying the impact of low dissolved oxygen levels on fish performance can help fish farmers better manage the risks associated with such events. This article describes the zootechnical performance of Atlantic salmon reared under experimental conditions at three different dissolved oxygen levels (i.