my bettas use to puff at me when i approached the tank, but i guess they've gotten use to me, since they don't do it anymore. they don't puff at each other through the divider now.
Bettas are funny little buggers like that. My neighbor was helping me do some routine water chemistry checks yesterday, collecting samples from a couple of my tanks and the little female I had in the tank he was grabbing water from zipped up and bit his finger. Made me laugh so hard, mostly because he screamed like a girl