Platy Gravid Spot

[FishNewbie]

Does anyone know about how long after a platy is pregnant that you will see the gravid spot. I have a gold twin bar platy and she has been in the tank for about 2 weeks, I have 3 males as well as 3 other females. I would have thought she would have gotten gregnant by now. I am askingthis because my other females are dark in collor tuxedo and red wag so it might be hard to tell if any are pregnant, since i can't see a gravid spot. How long before they give birth, I was watching my fish when i saw my male rainbow platy "put the moves" on the tuxedo, so I am wondering when can I expect her to drop? thanks

 

[helterskelter]

Not all platies have gravid spot's

but the one's that do usualy have them most the time, but they get larger and u may see eye's gtom around day 14-18 of being pregnant.

As at 78oF they are usualy give brith at 28-35 days you'll notice that it's about half way though.