This study sheds light on the challenges associated with hatchery-induced selection operating on wild fish in aquaculture.

Social learning from brown trout tutors did not improve the survival or growth of tank-naïve Eurasian perch.

The total biomass gain was substantially improved by supplementing a dry-feed diet with minced prey fish.

Gaussian mixture modelling is introduced as a statistical tool to analyse growth heterogeneity in aquaculture.