i found a very interesting site which says that you can have dragon fish in with your goldfish the website is
http://www.aquariumfish.net/catalog_pages/...dragon_fish.htm
(i hope that works) it is also know as the Violet Goby. They look very nice and grow to 15" they have to be ordered as they are wild caught (i dont think its fair on the fish)
the website says it can be placed with goldfish like orandas, black moors and fantails
what do youo guys think of this fish?