I just noticed them the day before yesterday. The skinnier one does not have them. That sounds opposite since the males are usually the skinnier ones.
Females sometimes have a little nub on their vent.
6 months seems to be that magic time when you can breath a sigh of relief after fussing over them for so long. I am looking into getting brine shrimp eggs and hatching for live food. The freeze dried and pellet type food are not good for the frogs and can cause impaction. Frozen shrimp are fine, so are frozen blood worms. Live is nice, but frozen is much easier to deal with and keeps easier than live feeders.