I've kept lots of bettas in my time, so this is new:
Morpheus herds and protects the kuhli loaches (Alpha, Digger, Fearless, Scout, and Mako). I hadn't noticed this, but a week in bed (and counting) gives you a nice long time to observe fish that you otherwise spend a great deal of time watching anyway. He tails them when they're off by their lonesome (never tries to bite them, though, and he hunkers down under the log to sleep with them at night), and when they're all huddled under the log during the day, he patrols the perimeter. It's disturbingly cute. Morpheus is a good guy.