I had a chance to visit this store in early March while in Detroit to give a talk at the Motor City Aquarium Society. There are not many stores like this around any more, and it is good to know that having a fish shop with a huge variety of cool and rare species is even possible these days. Fantastic Fins is working on getting a website up, so until I can post a link for them this contact information will have to do:
Fantastic Fins – 38313 Ann Arbor Rd., Livonia, MI 48150 firstname.lastname@example.org
Chris, one of the owners, says that he will ship fish. I am sure he or Dale (the other owner) can provide a list if you email them.