Can a common goldfish swim with a comet goldfish?

No fancy goldfish should not be housed with the more common varieties of goldfish because common goldfish are more aggressive and can swim faster which in turn would result in competition over food causing the fancy goldfish to become stressed and more susceptible to disease. Also common goldfish may damage the fancy goldfish's delicate fins by nipping at them.


This (above) may be true in some cases, but I have a 15' x 8' outdoor pond with 2 fancy goldfish, 2 Sarassa Comets (goldfish) and 2 common goldfish and they all get along fine with each other as well as with my 2 Koi. I watch them eat and everyone gets enough, although the fancies are timid when it comes to getting the food. I wait until the others have eaten alot and throw out more food in their direction. Both my fancies are huge and the biggest I have ever seen anywhere.