The 2019 Annual Report outlines the CGIAR Research Program on Fish Agri-Food Systems (FISH) achievements in delivering evidence-based solutions that address the complex challenges and opportunities in fish agri-food systems in the developing world. Three years into the Program, FISH research is having a positive impact on the lives of people who depend on fisheries and aquaculture in global food systems. This Annual Report highlights efforts to deliver realized impacts contributing to CGIAR’s System Level Outcomes: reduced poverty, improved food and nutrition security for health, and improved natural resources and ecosystem services.