Personally I'd use another tank, put the mother in there and remove her once she's dropped.
Yeah, I support that idea as well. I have 2 pregnant guppies which have begun having fry. They are kept in a community tank with 4 danios, 3 cories, 3 oto catfish, and a male guppy. The first time took me by surprise but managed to save 5 but it was a lot of trouble to catch them in a setup aquarium. Soon afte,r I got some java moss, and added another decoration with lots of leaves. The 2nd female has had her babies on Monday but there are only 3 that I can find.
When they are left on their own, it's frustrating to see them being chased all the time having to hide, and I don't even know if they are getting enough food either. Also, have having that trap, it played havoc with the ammonium and it's a pain to clean...you still need another tank/container to put them in. So, what I have opted to do was to get a small tank, it's cycling right now and I'll be putting the 1st female who is almost ready to deliver her 2nd batch of fry. Once she's done, then I'll take her out.
Originally did put the females in the fry tank, she ended up being so stressed that she didn't have her babies at all. If they're in their own tank it will be better...I know I don't have to got through all this trouble but I just want to see the real number of fry. Mind you, these are inbred...Also, the first 5 fry have since been incorporated with the big fish. They hide so well, that I can't even spot them and they are left alone most of the time but I still worry. Once the small tank is ready, I'll put them in. Sorry for the long post but this is all within the past month!