Spiridion is so crazy. I put the dividers back in my twenty gal and now he and Phaistos are in the five gallon sections on the end and I sucked up my fear of female bettas and bought a bunch of silk plants and started a little four girl sorority in the ten gallon section in the middle. I've since fallen in love with my girls, no worries there. Lol.
But this dude built the tiniest little bubble nest I've ever seen, maybe a centimeter in diameter being generous, and he's patrolling it like it's the gold vault. Haha, he's working on another, bigger one right now, in between bouts of flaring at anything and everything like a champ. My girls have noticed it, since it's right up against the divider. They seem unimpressed.