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

But in your home tank, there's no bacteria to be found. You have to introduce it, and that's where a lot of goldfish owners slip up because you can't just buy a fish the same day you get your tank.

As such, the smallest aquarium for a goldfish should be around 40 gallons— much, much larger than bowls. But size is just one consideration when choosing the best fish tank. Bowls also don’t ...

Besides causing fiscal and environmental disasters there are other reasons you should keep that goldfish in its tank. More from Science Goldfish may look small and cute in your home, but in the ...

One of the most persistent myths about goldfish is that they only grow to the size of their tank. While there's a grain of truth in this belief, it's rooted in a misunderstanding. The origins of ...

If you can no longer care for a live goldfish, the United States Fish & Wildlife Service recommends trying to find another caregiver, donating a fish to an aquarium or school, returning it to a ...

While your goldfish may look tiny now, without a tank limiting its size, the Fish and Wildlife Service says it can balloon into a "football-sized" invader. The agency says a single goldfish ...

Yamamoto, based in Iwaki, Fukushima Prefecture, unveiled an artwork titled “Message” in December 2000 in which he put goldfish in a tank replicating a phone booth, including features such as ...