Mmmm... Chromedome I hate to nitpick but it's apparent you didn't understand my post. I'm asking if anyone has had success producing guppy/molly hybrids, more commonly known as guppytail mollies. I have researched the VIELTAIL molly you mention and am quite aware they are not hybrids. I will not argue with you over common names and I'm not trying to discredit your knowledge. But let us be clear in our responses on this forum. Many people use this site as a source of trusted information on livebearers.
Another misleading statement you made was that these hybrids are sterile. Again lets be clear, the males cannot succesfully breed because of thier elongated gonopodium. However thier milt could very well be viable and I see no reason why a female guppy/molly hybrid could not breed. I know I've torn apart your response line by line and I'm sorry if I sound like jerk. But the few broad statements you made really don't pertain to subject of the post. I will agree with you about two bits: these hybrids are rare, and F2 generations would be impossible (w\o artificial insemination).
I'm not really looking to breed a colony of guppytail mollies, just want a few for pets
So I'll ask again... Has anyone here had success crossing mollies with guppies?