What types of fish do goldfish get along with?

Goldfish can only live with other goldfish. I know this is a rather sad, depressing thing, but I will remind you that there are lots of other goldfish that are pretty and there's a wide variety of them. You may notice that goldfish tanks are usually a bit bare, because only goldfish can live there. Tropical fish don't simply work out with goldfish, because of the temperature and really because they aren't supposed to live with each other in the wild anyway.

Though it's not a fish, if you really want to put some other sea creatures in your tank, I suggest to put sea snails. It's really the only other sea creature you can put in with goldfish, in my opinion. But be careful, snails can be a bit dirty!