My experience with goldies has been that they attack anything smaller or slower than they are. I have a couple of fancies, and they have killed all sorts of fish that I've tried to put in with them. If it's a single tailed fish, this will be particularly bad as they're faster than even the double-tailed and will pick on the slower fish. To solve this problem, you'll need a fish with bony spikes or armor. Cories or Otos are a good fit, better if she's willing to heat the tank. One word of caution though - I have 2 goldfish in a 30 gallon tank. Right now I'm working very hard to upgrade them because the've become so big that the filtration I have is having trouble keeping up. Goldies get huge if they're happy in a tank. Dianna > Date: Thu, 10 Jul 2008 00:12:27 -0700 > From: machismo@eskimo.com > To: gsas-member@thekrib.com > Subject: [GSAS-Member] Goldfish compatibility > > Howdy: > > I've got a friend who inherited a goldfish in a small tank, circa 3 gal. > She's accquired a 20 gallon tank with an eclipse hood, and moved it into > that, which is a positive step. It's about 3" now. I don't think it's a > special type. No long fins or weird eye things, but I don't know > goldfish. To me, it looks like a large feeder goldfish. There's nothing > in there now but a few decorations. She tried to introduce another > goldfish, but the one she has killed it. > > She wants to add companions. I've pointed out the temperature thing, and > I know a few cold water fish like white clouds and zebra danios, but don't > know if they are actually compatible with goldfish. The one article on > goldfish on the krib didn't really talk about companions, and I got mixed > messages about it by just googling it (go figure). One site recommends > zebra danios. The other says that they will out-compete the goldfish for > food. Another site recommended weather loaches. > > She seems determined to put some companions in there. In an attempt to > avoid trial and error and get an informed opinion, I'm asking the group > for recommendations for goldfish companions. > > Any ideas? > > Thanks, > > Shamus > _______________________________________________ > GSAS-Member mailing list > GSAS-Member@thekrib.com > http://lists.thekrib.com/mailman/listinfo/gsas-member _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member