Warming waters are shifting the diversity of American river fish

By Nathan Rott

Published September 24, 2025 at 5:43 PM EDT

A pair of studies show that American rivers are getting hotter, posing a risk for many fish species.

Environment

Nathan Rott

Nathan (Nate) Rott is a correspondent on NPR's Science Desk, where he reports on the natural world and humanity's relationship to it.

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