Sweden and Norway

Fish swimming in water contaminated by anti-anxiety drugs turn into weird loners


Perch are shy. They like to band together for protection, swimming together in schools the way nerds all share the nerd table in the high-school cafeteria. But now that lots of people are taking anti-anxiety drugs and their drug-laced pee has ended up in waterways, perch are acting differently, in ways that suggest they too have been mentally affected by these drugs. They’ve gotten cooler. They like to do stuff alone. Hunting, swimming, all the other perch stuff — they just like to fly solo.

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