I had my betta, Tony in a community tank once. He wasn't a bully. I made the unfortunate mistake of putting him in with 2 Swordtails (m,f) and 1 corydoras (the cory has buddies now!). The swords were abit nippy towards Tony. Tony never got in there way.
That was just Swords, though.
FireOasis - 3g
Zachary the Halfmoon Plakat
CichlidHaven - 55g (under construction!)
0.0.7 Black Widow Tetra
1.0.1 Convict Cichlid
0.1.0 Firemouth Cichlid
HermitBase - 10g
Zephus & Monoculus the Purple Pinchers (Coenobita clypeatus)
x1 Convict Cichlid Pair (actively breeding)