Sharks

Does anyone know of a wholesaler or store where I might find a nice
selection of sharks for purchase in good health and still smaller in
size? I'm in the process of buying a house with a large detached
garage and was seriously thinking about building a several thousand
gallon shark tank. I'm more interested in active sharks rather than
the cats and horn sharks etc...I was thinking more along the lines of
dogfish, leopards etc. but not anything like a reef shark which would
die in a few years in all but a very large swimming pool size tank/
public aquarium.

Jeff