1) Global aquaculture production has more than doubled in the past 15 years, with Asia accounting for around 90% of production led by China.
2) However, the environmental impacts and reliance on wild fish inputs for feed vary greatly depending on the species farmed. Carnivorous species like salmon require large amounts of fish in their feed, whereas molluscs and herbivorous fish have lower impacts.
3) On average, farming carnivorous fish species requires nearly twice as much wild fish input in feed as the amount of farmed fish produced. Certain systems are more sustainable if they reduce reliance on wild fish in feed.