Synopsis (short abstract)Fish plays a key role for food security. It is a primary source of protein and essential nutrients. Fisheries, aquaculture and related activities provide income and livelihoods for numerous communities across the world, including small-scale fisheries. The growing demand for fish questions the sustainability of marine fisheries and aquaculture, now a fundamental supplier of fish. The report considers the environmental, social and economic challenges faced by all actors towards a sustainable supp ly of fish, sustainable livelihoods of fish-dependent communities and an equitable access to fish for the good nutrition of all populations worldwide. It presents policy-oriented analysis and recommendations addressed to governments, private sector and civil society in order to fully realize the potential for sustainable fisheries and aquaculture to contribute to food security and nutrition.