Peppermint shrimp disappearing?

[wcfost]

Hi, I've got a 1 year old 55g reef tank that's lightly stocked. Just 2 bangaiis and a little blue chromis, a small CUC and various corals. Anyway, I bought 3 peppermint shrimp about a month ago, and after 2 weeks or so they flat out disappeared. No mortal remains whatsoever. My fish and corals seem as happy as ever.

I know peppermints hide well, but I've been keeping an eye out for them for 2 weeks and haven't seen a thing. Any idea what might be going on?

 

[socal619]

i have the same problem, haven't seen mine for a month, but my aptasia disappears so he must be alive lol. try having the lights off for a few hours then turn the on, maybe he will come out, they are supposed to be nocturnal

 

[c_healy]

When I say they can hide well I mean they can literally disappear into the rock. I moved some rock around one day and only saw a whisker sticking out from deep inside the rock.

They can get into some very tiny holes.

Once they had been in my tank for a while and were comfortable I noticed one found a cave that he hangs out in during the day. He is visible all the time now.

 

[wcfost]

My aiptasia are carrying on as happily as ever unfortunately... I'd like to add more peps to deal with the problem but at $25 for a trio (the going price here), I want to be sure they won't disappear like their predecessors...