Fish people - is my Molly pregnant?

[Ghettomolly]

Posted in fish but doesn't seem to be anyone about... Just brought these little ones home yesterday and one seems to have a swollen stomach noticeably more than the others just wondering if she could be pregnant? She's been up and about today but has seemed to prefer the bottom of the tank and staying close to the plants and hidey places but no aggression I've seen, although it's a 240-250l tank and there's only 4 of them just now so lots of space (fully cycled!).

Hopeful bump!

Quite possible -time will tell!
Livebearing fish are funny things though, they can just 'hold on' until they feel safe to deliver, so you can never be quite sure what the time frame is.
If this is a newly set up tank, I'd suggest getting more hiding places/ some floating plants in there, so if she does have babies, they have more of a chance of hiding/surviving.

Mollies are notorious for breeding loads. I'm forever seeing people trying to give them away on a fish group I use.

Thanks, it won't be a huge deal if she is, I've got a mesh box if I catch any babies to take them to safety. The fish we were planning on would only bring the tank to 60% capacity so not a big deal if a few survive. The middle of the tank in the first picture is waiting on some driftwood that should be ready by weekend but the sides are mostly planted. It's huge so middle looks empty but once the woods in and the rest of the bigger plants it'll hopefully be a lot more exciting.