I have one in my 180. Its a fairly shy, but has a playful personality. Spends most of the time backed into a hole in the rock with just his head poking out, but also bounces around sitting on the rocks as he goes. I dont find it hard to keep at all. Eats more or less anything. The only bit of caution I would say is if you have closed loop intakes in the rocks, it may be mistaken for a cozy hole and you'd suck a fish in. But mine has used closed loop outlets as seats in the past without issue. Doesnt fight with anyone.
My tank has mixed inhabitants 2 clowns, 7 anthias, an angel, a tang and 2 butterflies. No problems.