But here's the thing, all the bacteria in the world won't keep your fish alive if the tank is too small. You see, as these bacteria gobble up goldfish poop, they produce some waste of their own ...

Goldfish may look small and cute in your home, but in the wild it's a different story. Releasing them into your local stream or lake is a bad idea. Following is a transcript of the video.

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

The USFWS asks goldfish owners who can no longer keep their pets to rehome them or return them to a pet store — or even ...

Having active goldfish and poor swimmers in the same tank can be problematic. Park officials said they made it possible by adjusting water currents and providing hiding spots for the fish.