anyways, you can, but you shouldn't, as they are from different genuses and species, and if hybridized, the young will have many deformities. This is all I know of, any other users can help you from here
yeah also guppies and molly can breed...
platys and swords as well...
you really shouldn't breed them because of genetic issues and can shorten their life spans or they could be still born..
anyway lots of problems I personally wouldn't do it..