The World's Largest Fish Migrations Are Collapsing.

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Hidden under the surface of large rivers around the world, some of the world's largest animal migrations take place – walks that compete with the famous migrations of zebra and gnu herds through the Serengeti deserts in Africa. For centuries, fish migrations were as predictable as the seasons. Salmon, sturgeons, giant catfish and many other species roamed the [...] The post The largest fish migrations in the world break down first appeared on la…

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By Zeb Hogan Hidden beneath the surface of great rivers around the world are some of the largest animal movements on Earth – migrations that rival, in terms of biomass, the famous herds of zebras and wildebeest across the Serengeti desert in Africa. For centuries, fish migrations were as predictable as the seasons. Salmon, sturgeon, giant catfish, and many other species traveled the rivers in great numbers, guided by rising water levels, flood p…