So, my males do occasionally make bubble nests. Typically it's either Jabu-Jabu or Ralis. My halfmoons are retarded or something and don't know how, but they're perfectly healthy.
I don't know whether to be proud, confused, depressed... that my champion bubble nester is a female. Or two. Every day there's a new nest and it gets height. I've been watching one of my females very closely because she keeps growing and growing and looking more and more male every day... but she doesn't fight like one! All of them get along fine.
So anyway... here's my female's amazing bubble nesting skillz.
And now for the female who I suspect is the culprit...