My VT has taken to sleeping with my 4 melini corys. He likes to rest with them when they are all resting in a group together. He isn't scoping them out to see if they have food- he does that, too, so I can tell the difference. :)
And my new HM tries to play with with my kuhli loaches when they are doing their frenzied loach dance. He tries to swim along with them- he can't quite get the hang of the circles they do, but he tries. He isn't chasing them, just trying to do as they do.
I know it depends upon the temperament of the betta, but I don't think I'd ever unilaterally say that bettas should
be on their own. It would appear that some bettas enjoy the company of other fish.
What do y'all think? Anyone have any stories of their bettas being companionable with other fish?