I absolutely love these guys! This one had a confrontation when the Emerald Crab took over it's cove. The crab ripped off it's top fin, but grew back after 2 weeks.
I used to have one too and yeah the hiding part was a real disappointment. After moving some of the aggresive fish to another tank the firefish would come out a lot more though!
They're pretty fish but mine found the 2" x 8" hole I had above the tank and went carpet surfing.