Are My Mollies Pregnant?

[Liz1993]

I got them about 2 weeks ago now, and all of a sudden their stomachs look larger, I have 1 male and 2 females, the females bellys have just expanded over a few days, Its just them 3 in my tank and i was just wondering could they be pregnant that quick? I know one of the females was in the tank with the male at time of purchase. Also if they are pregnant how long are they pregnant for? Im not planning on getting a nursing net for them, let nature take its course!

 

[KrystaK]

They probably are. Mollies breed more quickly than rabbits

If you got them from a pet store within the last month than chances are they are pregnant. They are typically pregnant for about a month. You can tell when a molly is due because it's tummy will change to look more like a square (her rear end will drop a little to match the curve of her front end, typically they drop within 24 hours of this happening)
Also for about a day afterwords the female won't eat.

 

[OldMan47]

Liz1993, I am moving your subject to common livebearers.
You most likely have fish carrying fry but I have a thread in common livebearers that will help you determine just where they are in the process. In my signature area is a link I called My Molly's Progress where I posted lots of pictures and commentary that should help you determine the state of your own fish. Almost any livebearer kept with a male of the same species will be carrying fry, but the stage of that process is up to you to decide.

 

[5teady_2012]

They most likely are pregnant than not... females once inpregnated by the male can hold sperm packets for 6 months.
So even without a male present, they can have fry every 4 weeks for 6 months (on average).