I'm searching around but can't seem to find info on the life span of the
Peppermint Shrimp.
Mine passed away this evening

... had him for a bit over a year now (since Sept. 2003). He was great... got rid of my aiptasia quite quickly and he always had fun playing with my clown. My concern is figuring out why he died... if "old age" then so be it, but if not I'd like to track down any water quality issues. Everything seems okay. Only thing I can think of is that I may have topped off too much too quickly a few days ago and shocked the shrimp with a strong salinity drop. Everyone else in the tank seems fine (corals and the one clown... some snails).
I know I know... just a shrimp. Buy hey, I LIKED HIM!