I have tried 2 of these in my 220 gal. display,(hoping it was enough space to keep both of them happy)but they fought,immediately.I managed to separate them and move one to the refugium. That blenny,lets me pick him up with my finger,once in a while,without swimming away.They are both doing very well,however,the one in the refuguim,is out of sight,most the time.
BTW, good for you,schnebbles.