During the recent AE2015 event in Rotterdam, EAS and the European Aquaculture Technology and Innovation Platform (EATiP) organised a panel discussion on fish welfare and losses during the production cycle - to define issues and identify research needs.
The summary report of this panel is available here. It covers issues including documenting welfare, biomass control, predator control, anaesthetics, fish medicines and stress management and operational welfare indicators. It also provides an overview of associated research needs.