They highlighted the problem by sharing images of goldfish that had grown to enormous size after their release, damaging water quality and plant life in lakes. What Do Goldfish Eat?

The viral photo raises questions about a longstanding goldfish myth. Inverse speaks with experts about the fishy science surrounding goldfish growth and size.

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 ...

The tiny goldfish you can pick up at pet store for a few cents might not look like an environmental threat, but they can grow into a huge problem if set free in lakes or ponds — mainly because ...

An ecology nonprofit recently captured a goldfish in a New York river that was the size of a kitten.

A 14-inch goldfish found in a river shows why you shouldn't flush these pets down the toilet, according to a nonprofit.

A 14-inch goldfish found in a river shows why you shouldn't flush these pets down the toilet, according to a nonprofit.The group, the Buffalo Niagara Waterkeeper, posted a photo of the large fish ...