Migratory River Fish Populations Have Reduced By Almost 80% in Just 50 Years, and Humans are to Blame

Large fish such as the beluga, a sturgeon, or the giant Mekong catfish, are particularly vulnerable, it said, adding that dams and other obstacles blocked migrations that are crucial to their life cycles.

source https://www.news18.com/news/buzz/migratory-river-fish-populations-have-reduced-by-almost-80-in-just-50-years-and-humans-are-to-blame-2741195.html