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

This means that they need an enclosure large enough to accommodate their adult size. As such, the smallest aquarium for a ...

The USFWS asks goldfish owners who can no longer keep their pets to rehome them or return them to a pet store — or even consider reaching out to a local aquarium or fish rescue group for help — rather ...

On it website, the government agency explained that although goldfish in pet shop tanks may look harmless, "in the wild, they don't stay small." "Without a tank limiting their size, goldfish that ...