I do, the problem is the extreme expense! I don't have wild sources of them in my area or I would have caught and raised them myself.

The couple of places that I know sell them are:

http://www.aquaculturestore.com/index.html
http://www.aquabid.com/
http://www.jonahsaquarium.com/

But check the prices out and you'll have a heart attack! Some have them in stock, others are spotty... I have caught them in FL but I figured they wouldn't be genetically adapted to northern water temps in the winter.

http://www.aquaculturestore.com/index.html seems to have them in stock the most. The only concern I found was that they said it could be lake or sharpfin chubsuckers. Plus they are $12.95 a piece for 1-3" fish!!! Also, the company is based in FL which leads me to believe they are fish of southern genetics. I really don't wanna drop $12.95 per fish to experiment!

http://www.aquabid.com/ is a good source for unusual native fish. Just check the native fish section and see what they have. I usually check once a week just to see if they got anything unusual. I keep several native fish aquariums so I am always looking for a new fish to try out.

I do have several locations to catch wild creek chubsuckers. I have a small earthen pond that is void of fish. I think I may capture several and see how they do in the pond this year... I know they will live in it, whether they will spawn is the BIG question!

As a last option you may want to post on http://forum.nanfa.org/ They have a for sale/wanted section for fish. You may be able to find someone willing to sell or trade you some lake chubsuckers. I haven't looked into it, but might be worth the effort. I know a lot about nongame fish but some of the guys on there make me look stupid!