A report by the Convention on the Conservation of Migratory Species of Wild Animals makes for grim reading on migratory fishes (see go.nature.com/3v8pdv2). Among the 37 species with sufficient data, populations have declined by an average of 90% since 1970. Migratory fishes have key ecological roles, and their decline undermines Indigenous cultures, food security and biodiversity conservation.
Competing Interests
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The authors declare no competing interests.