I keep bolivians (2) with keyholes (2) in my planted 120G. They were in a 55G before. Never had any probs. Both seem to be all bark no bite towards each on occassion. They have been together for over a year now.
In the 120: Large assortment of cories, the above mentioned. 15 redtail hemiodus, kuhli loaches, large apple snail, rubbelip pleco and bristlenose, 10 glass catfish. No probs with any. With of course plenty of live and few fake plants sucked to the wall, driftwood and plenty of caves.