Imagine a fish worth more than a small fortune. The Totoaba, a creature of the Gulf of California, holds the dubious ...

"The number and size of the goldfish that had to be removed really shows why this species is such a challenge when released to nature," Campbell River utilities operations manager Steve Roehr said.

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.

They said many terrestrial species are known to use optic flow to estimate distance, but goldfish appear to process the information differently. Terrestrial animals, including humans and honey ...

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 ...

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 ...