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 ...

Instead, the study showcases how researchers taught goldfish to traverse the land in a tank on wheels. The idea behind the study appears to have been an attempt to better understand animal ...

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.

A team of biomedical engineers and neuroscientists trained six different fish to successfully steer the four wheeler. The ...

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.