Hi Flemming
Not that I know of. I have heard people crossbred parabuhtus villosus with transvaalicus. And it worked. However I dont know if the offspring was fertile.
Australis with bicolor wouldnt work. The size difference is just too big.
Aside from that, its not really commonly accepted to do it for obvious reasons. However, I was planning on doing it someday. At least trying, and making sure whatever comes from it, doesnt leave my house to prevent mixing breeds.
However, I do think nature has its ways to block this kind of inbreeding. And thats a good thing
