Currently have a sixline wrasse, a lawnmower blenny, fire fish, a clown, 2 skunk cleaners. i read somewhere that the blenny might bother a clam. Am thinking about adding a clam, was to be sure.
yes, +1 on the experience with Ecsenius blennies bothering tridacnid clams. i also have a lawnmower blenny, and i've never observed him paying attention to the clams.