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Of pregnant guppies and platys right before birth? Or does it vary with the age of the fish? DO they have fewer offspring when they are younger? I think my guppy is pregnant, but i'm not sure when to put her in the breeder ( i don't want to do it too soon) so pictures are greatly appreciated

Not my pics but here's a link to pregnant pics of various species of fish.

The size of a livebearers drop does increase with age.

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There is water at the bottom of the ocean

Frankly, I haven't had much luck with breeding nets, although I did try them 2 different ways.... One, I tried placing pregnant females (one at a time of course) in the net - but all that happened was after their initial panic, they became quite lifeless - not eating much, not swimming much, etc... So I knew that wasn't working and removed them from the net. (Tried different females thinking it might be a personality thing - but NONE of them thrived in the breeding net). My second attempt was placing the newly born babies in the net using the hunt and scoop method... This too failed, because even with filtration being in the main part of the tank, waste and food became trapped in the net with the babies.... So eventually, I set up a 10 gal tank, placed 3 pregnant platys in it - and when one gave birth, scooped out the adults and returned them to the community tank..... About 40 fry have survived, have grown to about an inch in size after about 3 months time, and have been transferred to a 20 gal tank awaiting just a little more growth before being taken to my lfs.....
So my suggestion, if you really want to raise fry - is to use a separate tank.... (But also make sure you have a plan for the fry once they arrive and have grown in size - Check with friends, lfs, etc. to see if they have room and are willing to take them. Otherwise, you will be over run with fish!)
Another option would be to provide breeding grass as has already been suggested. Even now, with livebearers in my community tank, during our weekly vac/water change we constantly find stray babies! They hide deep in the rock/gravel - in the breeding grass - etc. Have had several make it to adulthood.... So if tank room is limited, this would be the route you'd probably want to go.... With livebearing fish seemingly constantly pregnant - you will soon be surprised at how many you end up with!
Good luck!


To thine own self be true...

Ditto the last post. If raising the fry is what really interests you, as it does me, get set up for it. Make the room, get the tanks. I have a 30, a 29, a 25, a 20 and 2 ten gallon tanks set up for growing fish of different types.

You don't have to go that far. Just get another tank, plant it heavy, plastic or real, and put the female in it when you think she's close. Or plant your community heavy and rescue the babies when you see them. then put the fry in the new tank.

Good luck and have fun, Mike