On the rear end of livebearers,when they are close to a drop or even within a week before you will notice a small white tube/ball appear by her anal fin,at first it may appear that she's having a small white poo but obviously she's not,has she gets closer what looks like a black dot appears in the centre where the white birthing tube is opening up.
I judge readiness to drop fry by shape, not a white tube or a gravid spot or even by size. This picture was taken the day before the female dropped about 30 fry that I still have several months later. All fry were survivors in my tank.
This is one of many pictures that I took to be able to publish a complete documentation of my molly's complete progress from one drop to the next for this gal. I have a link to that thread in my signature area called "Molly progress".
From that one picture it looks like she has a while yet to go..and I say that because I've had the answer pounded into my head five billion times already by other members before it finally stuck. XD I finally had to pretend to draw an imaginary vertical line from the anal fin-straight up the body-to gauge the shape of the belly. Turn up the temp, keep the water clean, keep the lights off, good food, and good luck!
my only issue with the last two posts, is that swordtails are considerably thinner and have a completely different body shape. mollies and platies have distended stomachs. swordtails and exspecially hi fin swordtails are considerably more lean, there for they dont get as big in pregnancy.
for example if you look at 5teadys post on livebearers his hi fin swordtail barely looks pregnant. she has only the slightest belly. mine looks exactly like his.
Gretel dropped her fry last night!!!
there are 20+ that surivived
i think there was only one that was still born and i saw 2 eggs so its very exciting and they are incredibly cute!!!
pictures soon!!!