Do these pose any danger to a Tridacnid Clam?

[Eric55]

Scarlet reef hermit crab
Dwarf blue leg hermit crab
Electric blue hermit crab

Thanks for the answers!
Eric

 

[a4twenty]

i have all three with no problems. when i put a new clam in my tank they will actually swarm the clam and do a clean up on his shell. but i've never seen them bother any of my clams.