cleaner shrimp missing?

[marvinsae]

i just purchased 2 cleaner shrimp and acclimated them for about an hour with the drip method...however one of them died i have no idea. this isn't the first time i've had something die on me. i think it might be one particular lfs i purchase livestock from cause all the other fish and such were purchased else where n doing fine. well anyways, the second cleaner shrimp seemed to be doing find all night until i went to bed and now he's no where to be found. could it be my bristle star that ate it? it's a fancy red bristle star and he never comes out of the rocks anymore. or possibly the shrimp died due to other causes and the star just scavenged his remains?