https://www.theguardian.com/environment/2026/mar/24/epic-river-migrations-of-fish-rapidly-collapsing-un-report-finds. "Such #fish #migrations happen in #rivers across the world - #salmon & #eels are more familiar examples - but many are rapidly collapsing, according to the most comprehensive assessment to date. The analysis, by the UN’s convention on the conservation of migratory species (CMS)... found #freshwater fish #populations #worldwide have crashed by about 81% since 1970."