Releasing goldfish into the wild can mess up ecosystems

A new study finds goldfish released into the wild can trigger rapid ecological collapse in lakes, threatening native species throughout the food web.

Goldfish are a familiar fixture in homes, classrooms, and backyard ponds around the world.

But when they are released into lakes and ponds, they can quickly turn healthy freshwater ecosystems into environments that struggle to support native life, new research shows.

The study, led by researchers at the ...