Hello,  I am having some trouble with some goldfish that I just took in.  A friend of mine recently gave me her 4 common goldfish that she had in her outdoor pond.  They were in a bucket overnight and I woke up to one dead one.  My friend had said that they weren't really eating much before she caught them and that they weren't moving around as much.  The dead one looked a little bloated.  I moved them shortly after into an aquarium and noticed that they aren't eating, it has been 4 days.  They seem to be moving around well in the tank but they open their mouths up alot (not sure if this is normal for goldfish or not) not gasping at the surface, but at the bottom of the tank.  Any information would be greatly appreciated.

Thanks