Pretty fishes, what area exactly are you in?
There is Aquarium Outfitters in Wake Forest that is pretty good. There is Fish World and Fish Pros in Raleigh. Chapel Hill has Dubey's Petworld, but I wouldnt say it is great. Of course, there are several Petsmarts around--Raleigh and Durham. There is also Pet Supermarket which is OK, not great.
Random quote of the week: "Your 10-gallon tank will be just fine for 4 to 6 comet goldfish"- Jeffery C. Howe, FAMA, 09/05