Common Goldfish Tank Mates. In regards to similar types, if you keep fancy breeds among the more common types, it is possible that the slower fancier breeds won’t be able to compete for food with the faster common types. Environmental factors and nutritional setup will play a massive role in determining this fish’s adult size.

Take heed how many you buy however, for they breed rather quickly and they could overcrowd your tank! Tank dividers can be beneficial if there are aggression issues with the goldfish or other fish in the tank. This fish isn’t aggressive at all as it prefers hiding away.