Half black and endlers guppies

I bought about 6 half black females and 1 male endler guppy. The females were in a tank of there own so they weren't impregnated. I bought the endler in the hope of crossbreeding to get endlers. The male seems as though he's doing his job as i've noticed a couple of females getting plumper and the gravid spots getting more apparent.
I aquired some wild strain endlers and put them in with the others. But the wild strain seem to keep themselves to themselves and not mix with the others and vice versa. I'm just waiting to see what the outcome will be with the half blacks.

Sounds nice, always fancied doing this! Let me know how it goes

I will do Ross.