Is it at all poss for Black Millie’s & Guppys to mate

[Katsryan]

Just wondering as my Male Guppy is the odd time tryin to have a “go” at the female Guppy

 

[fish48]

https://www.aquariacentral.com/forums/threads/muppy-project.200386/

 

[Nathannn]

It’s possible but super rare I heard, and it had to be a Male guppy to a female Molly, heard of them being called “Gollies” but they have problems and are sterile so can’t be bred from again