I've had a lot fish with bass.... including a huge bluegill (with some NASTY teeth) green sunfish, and a lot of other bass,sunfish, catfish (small enough to not eat the bass but big enough not to get eaten... I like bullheads the most)
and a lot of other things
I think gars would be bullied or out competed for food because bass are GREEDY fish!
well here is a little story I have on my last bass
I was messing with him and had a shrimp just above the water.... he stared at it and leaped out of the water grabbing my finger and all the way to the center island in our kitchen (5ft away) and flopping around everywhere... well he was perfectly fine after that...