While out looking at our new pond we noticed that we had more fish than when we first put fish in there.  It turns out that some of them had babies.  I had no idea if they needed special care, so I contacted our pet store to get some goldfish information.  The pet store advised as that since they are living in a pond, there was nothing special that we needed to do.  We just need to check periodically to make sure that none have them have died and if they did to remove them promptly so they would not contaminate the water.