Aquaculture has become the largest consumer of global fishmeal (FM) and fish oil (FO) production, accounting for 68% and 89%, respectively (Hua et al. 2019). At the same time, most modern aquafeed are now predominantly composed of terrestrial plant materials and animal by‐products [in this issue, you can find a fascinating article describing how aquafeed have evolved and the consequent call for rethinking trophic levels in aquaculture policies (Cottrell et al. 2021)].
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