Lost fish!

[Graham_f]

How efficient are your clean up crews? Say for example... A 2.5" fish died. How long would it take them to erase the "evidence"?

I ask because this is the second fish I have lost. The could be alive I guess but I haven't seen the one in at least three months and my tank doesn't have the kind of caves to support hiding like that.
I "lost" the second fish yesterday. It was chilling and had what is assume to be a happy look on it's face.but today after work there is no sign if it.
I'm confused
I assume the are dead but I can't find bodies.
My clean up crew consists of:
20-30 tiny hermits,
two mexi turbo snails,
Two emerald crabs a few good sized bristle worms.

Any thoughts?