The species is invasive and causing problems in ponds and Great Lakes alike. Officials issue warning over problems caused by common pet goldfish — here's what you need to know first appeared on The ...

This goldfish’s eyes look wild and not in a normal telescope-eye or bubble-eye way. We take a closer look to figure out if it ...

Warnings have been made telling people not to release pet goldfish into the wild as they can grow to massive sizes, wreaking havoc with the ecosystems in lakes and rivers ...

Researchers developed a way to run tests on fish learning and memory in the animals' natural environments. The results may ...

Researchers say wild goldfish average around 14 inches in length, but can grow up to 19 inches and 9 pounds.

"Goldfish grow massive in the wild, where they can turn lakes and waterways into murky messes, steal food from native fish, and wreck water quality," the agency added.

Pennsylvania (KDKA) — A massive “megalodon” of a goldfish caught in Presque Isle, Pennsylvania, is a good reminder of why people shouldn’t release their pets into the wild, the U.S. Fish ...

For more than a month, a Bed-Stuy block has been debating what to do with around 100 bright orange goldfish swimming around a leaky fire hydrant in a sidewalk pit. But environmentalists say one ...

Researchers say wild goldfish average around 14 inches in length, but can grow up to 19 inches and 9 pounds.

The Great Lakes are being overrun by jacked goldfish. Scientists are worried they could cause long-term damage to the ecosystem.

Pennsylvania (KDKA) — A massive “megalodon” of a goldfish caught in Presque Isle, Pennsylvania, is a good reminder of why people shouldn’t release their pets into the wild, the U.S. Fish ...