Overhere a video of some of my panda guppies. Some are very pregnant... These won'tr chase nor eat their fry. So, it's safe to let a female drop fry in there.
And again, there's no endler influence in them. They're genuine guppies. The only reason why they're more rigid and smaller (at least the males) than an average fancy guppy is because of the pink gene they carry. Connected to the pink gene is a dwarf growth gene.