El Niño’s disruption of the Peruvian anchovy fishery is tightening fishmeal and fish oil supplies, increasing prices and forcing feed producers to rethink traditional formulations. The challenge is not simply finding another source of protein, but replacing the nutritional and functional benefits that marine ingredients provide. Explore how insect meals, algae, single-cell proteins and other alternatives could help build feed systems that are more resilient to climate and commodity-market volatility.