Keeping a goldfish in a tank period isn't right. They grow to several feet long & when they are placed in a tiny living space their bodies stop growing (un-natural) & their insides keep trying to grow, until the poor fish's organs crash & dies a slow horrible death!

Gold fish are Large Pond fish, end of story. A Goldfish should live to 10-20 years.

I currently have about 50 feeder goldfish, who have grown to about 3 inches long. The pond they are in is still a good size for them, so they school together & LOVE hanging out in the current. When I feed them, a couple will test the food & then ALL of them will start eatting at once, noisey buggers!

In my pond its survival of the fittest & smartest. Any weak or stupid fish will be eaten by the turtle or by other goldfish (regardless how much I feed the fish). Size means nothing in my pond, I have a nice 4inch fish swimming about & a tiny 1 inch. They have been there for about 3 months & there was over 100 of them.