In fact, most goldfish don't survive past their fifth birthday, and that's a major problem since they're supposed to live for about as long as your cat. So why are goldfish dying so young?

they also introduce foreign parasites and diseases that wreak havoc on the delicately balanced ecosystems wherever they go. And they aren't content to stay in one place. Goldfish are a rapidly ...

While not all goldfish grow to huge proportions, even the small ones can cause problems and spread disease. Scientists and ...

They multiply so quickly. They grow quite large, and have no known predators.” Staggering number of goldfish removed from ...

Goldfish don’t naturally live in North America, which makes them an invasive species. The town between Edmonton and Calgary said people have been dumping pet goldfish into the pond. Invasive species ...

Scientists have proved goldfish do have good memories and are able to navigate their surroundings. A team from Oxford University trained nine fish to travel 70cm (2.3ft) and back, receiving a food ...