What is this? DROPSY? PREGNANT FISH? D:

[Hadoken Kitty]

Females can get full of eggs, and after a meal they will look HUGE. Usually breeders watch for this, since they want them to be big for breeding. Anyways, if you look behind her ventrals and there is a small white thing sticking out, that is her egg comming out of her ovipositor. That means that she is "eggy". If you feed her when she's eggy, she'll look really big like that.