Actually the betta is named "Sid" and the loach is named "Frank" (short for Frankenloach) . . . .
I have a Dwarf Gourami in the tank and they pay very little attention to each other. I got lucky in that I got a very interesting collection of personalities in my 55 Gal. It seems they are ALL quite independant and none of them has a problem making his or her opinion known. If one fish is going to pick on another, it is just as likely that the one previously picked on will be the "picker" next time around rather than the "pickee". They all seem to even out at some point.
Its weird, sometimes there will be 5 of them (one time it was the Dwarf Gourami, the Betta, the Clown Loach, the Pictus Cat and the Bala Shark) all playing together in a column of air bubbles from a buried airstone. There doesn't seem to be any segregation in there. They all just get along, or occasionally you'll see a little snit like you would see between brothers. The Dwarf Gourami and the Angel are the worst two. One minute the gourami will have the Angel in a tizzy chasing him all over the tank . . . .a few minutes later, the angel has the gourami on the run.
All in all, they're a riot and I haven't had a serious personality conflict since I took 2 German Blue Rams back to the store about a month ago. They hated everybody. Musta been Nazi Germans.