fat platy

Hi all, This is one of those is she pregnant or is she not? query. I've read through loads of other posts and some photos I've seen of sick fish look like mine, but some photos of pregnant fish look like mine. It feels like she's been pregnant for years! Obviously she hasn't but it's...

ok, so my male platy has developed this large stomach. Could he have a disease? He looks pregnant. I have enclosed pics although hard to take. Water conditions are good. He was being chased around the tank by a larger male but since I have gotten 2 more females & now the larger male is chasing 1...