12 Small Fish Species That Clean U.S. Waterways Better Than Any Technology
Some of the fiercest defenders of America’s waterways are no bigger than your finger.No filters. No machinery. Just tiny, tireless fish doing the dirty work we barely notice. They dart through streams like underwater janitors, scrubbing algae, eating parasites, and breaking down muck—one nibble at a time.And while tech companies chase sleek machines and flashy …










