That female is not a molly fry eater. She does eat platy fry when given the chance but I raised her fry with her until she had her next drop and didn't notice that any went missing. I tried it because I remembered way back to my first livebearer experience as a child. A tank with 5 or 6 black mollies, the ones that were mostly P. shenops, in it would suddenly have 15 to 20 fry and most of them would grow big enough that I had to get rid of them elsewhere. I didn't figure that we had changed their nature all that much by the selective breeding done over the next 50 years so I tried it. I have no idea how a tank full of P. velifera or P. latipinna would do. Nor do I know how any of the other 20ish species with a common name of molly would do.
Is a breeder net, just an oversized net that hangs on your tank with fry inside? 
