Peppermint Shrimp... DEAD?

[SeaSerpant]

Hey all,

I just put my peepermint shrimp into my tank on thursday and i found it dead behind my filter intake. It still has all it's colour and i would have expected it to atleast be a bit clear.
Is it actually dead did it molt? It looks like the flesh is still in it... sad.gif
My params are as follows:
Ammonia-0 (could possibly be .1)
Nitrate-0
Nitrite-0
Ph-8.5
SG-1.025

Everything else is showing no signs of stress or any problems, zoas are out, mushroom is the biggest it's ever been, frogspawn is growing nicely, snails are active, so are the hermits.

WHAT COULD THE PROBLEM BE???

Thanks
SeaSerpant