In 2017, Marcus Rosten pulled a goldfish the size of a small dog from the Niagara River in New York. But it wasn’t the first time a monster goldfish had been caught in the U.S.
Goldfish living in a bowl in your family room are harmless. But goldfish in U.S. waterways are an invasive species. That’s an animal or a plant that moves into an area and harms native species. Tens of millions of goldfish have invaded bodies of water across the country.