For what it's worth, breeding endangered species for preservation is a noble cause however, breeding for reintroduction is a whole other story. I'd be surprised if the DNR would allow for such a thing in an uncontrolled environment and in the presence of non native fish so if you have other fish in the house, might not get approved. Too great a chance of introducing diseases not common to the area that the fish do not have natural resistance to.
Second thought, many species of animals and fish are endangered due to habitat destruction. So while it's great you have these species available for reintroduction, if there is no place for them to go, then where are you at? You might be better to work with habitat restoration and let the remaining wild populations repopulate themselves. There have been numerous examples of this being successfully done.
Good luck with the project and keep us posted on what happens.