my LFS has one of these in a 90H tank, with some other really big fish, like really old clown loaches, plecos, and an elephant nose. bushfish can't be kept with fish smaller than like 2", they can be bullies. they seem generally peaceful with fish within a few inches of their size, but they can be aggressive with smaller fish.
I have 3 of them. So far they have remained peacefull. So far my ottos have been left alone, along with the 3 remaining cardinal tetras and a lone ember tetra. I do dump about 100 ghost shrimp in about once every 2 weeks, and they do eat them. Most of the time they have been hiding, but have learned to associate me with food and will come out when I am around. I feed them bloodworms and other frozon food.