Projections suggest that by 2050 the world’s population will be close to 9.7 billion. Such rapid growth will put extra pressure on food supplies, making secure and sustainable nutrition strategies more important than ever. Among the possible solutions, aquaculture has a special place. It provides a steady source of animal protein and, compared with many other food production systems, leaves a smaller environmental footprint. Yet the sector faces a major challenge: about one-third of the catch fr