Whats wrong with my Clams?

[MarkoD]

Originally Posted by fishytime

pinched mantle on two different clams at the same time??....seems unlikely....how old is your tank now mang?......whats your fish list ATM?

tank is a year old.

fish:
regal tang
black shoulder tang
powder brown tang
foxface rabbitfish
solaris wrasse
cleaner wrasse
mystery wrasse
mandarin goby pair
clarki clown pair

the only fish i ever seen picking at the clams is the clearner wrasse, but i double he's doing any harm