SPAROS, a partner in the Algae Vertical project and part of sub-project 5, organised a workshop entitled “Biomarkers for Fish Performance and Robustness Assessment” at the University of the Algarve, where pioneering methods using biomarkers to assess fish welfare and adaptability were presented. This meeting explored innovative approaches to using biomarkers to assess fish health and performance, covering crucial topics such as molecular markers, growth potential, oxidative stress, immune response and stress prediction in various conditions.