How to build an above ground goldfish pond system - My new updated greenhouse system. Get the premiere dates for the five ...

But in your home tank, there's no bacteria to ... That might help explain why goldfish in healthy environments can reach the size of an American football, while your last goldfish wasn't much ...

Besides causing fiscal and environmental disasters there are other reasons you should keep that goldfish in its tank. More from Science ... about the size of an American football!