I have never kept them. The LFS carries them and I know people who have kept them. They require very soft acidic water with low TDS. Also they are very sensitive to temperature change.
I did find this article on breeding them http://www.aquarticles.com/articles/breeding/Drew_Parosphremus_paludicola.html
I did find this article on breeding them http://www.aquarticles.com/articles/breeding/Drew_Parosphremus_paludicola.html