PBS News Hour

Invasive goldfish threaten Great Lakes ecosystem

For many people, the humble goldfish is their first pet. Swimming in a tank in your house, it’s hard to imagine it’s much of a threat. But released into the Great Lakes, this iconic fish can imperil the fragile ecosystem of the largest freshwater system in the world. Christopher Booker has the story.

Invasive goldfish threaten Great Lakes ecosystem

6m 6s

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