I just bought my first Crocea clam. I put him in the tank, and within a minute my cleaner shrimp was on top of him and tearing at his flesh. Of course, I shooed the shrimp away, then I moved the clam to my other tank (which has no shrimp). I wasn't aware that the cleaner shrimp was a predator to clams, and I can't find anything on the internets about it. Has anyone heard of this before?