Just west of Toronto last summer, startled biologists counted more than 20,000 goldfish in a single urban stormwater pond the size of two basketball courts. And the fish, probably descended from ...

Most people see goldfish as harmless little pets. They swim quietly in bowls, entertain children, and seem impossible to fear ...

Based on their availability and ease of maintenance, goldfish are one of the most popular pets on the planet. But how long do goldfish live, and are we responsible for extending their life span as ...

First it was the hawklet adopted by bald eagles. Then it was the lioness nursing the leopard cub. And now in the latest example of interspecies care, there’s video of a cardinal feeding goldfish.