If you've ever heard the urban legend about released pet alligators growing to colossal sizes in sewer systems, you might be ...

Goldfish possess genetic traits that allow them to swell up to four pounds—the size of a Chihuahua. Experts say that's why ...

If you think you're doing the goldfish a favor by releasing it, you're not! Instead, you're setting the stage for an ecological disaster, which could threaten hundreds of other species.

In fact, goldfish are actually an incredibly diverse, hardy, and large species of fish that can live quite a long time. There ...

Campbell River was forced to drain nearly 40 million litres of water from a local pond in an effort to rid it of 1,700 goldfish, some as large as three pounds.

“Many of the reasons that make goldfish invasive upon release are the same reasons that they make great pets and pet trade species,” Sara Ricklefs, Executive Director of the Invasive Species ...

This is called environmental variation. Humans, dogs and goldfish are examples of species. Different species have different characteristics from each other. For example, dogs have tails and humans ...

The fish was found during an electrofishing survey in Presque Isle on Lake Erie, and the U.S. Fish and Wildlife Service shared it to raise awareness for Invasive Species Week. “This goldfish isn ...