Giant Clam experts advice needed

What else do you have in your tank?

 

how long did you have the clam?

 

how long did you have the clam?

 

What type of coris wrasse? What color are your stars? There are quite a few different fish referred to as coris wrasse. Depending on species that could be the problem. I'm not sure the stars are the issue with the possible exception of a green brittle star.

 

may not of been any kind of inhabitants. often times clams get whats called a pinched mantle . unless you know what too look for its very hard to tell but the mantle will be ruffled in a spot or two. when this happens in most cases the clam is doomed in a very short amount of time.

 

yeah that or pyram snails, once snails start to go and being the decaying process, everybody starts eating and picking at it. They don't normally eat clams, but they will once it begins disintegrating

 

I would be open to the idea that the clam died, and the crabs came in and scavenged. What you saw was the aftermath possibly. This happened to me one time.

 

Yeah I had one go like that. I had him for 3 years and then introduced a new crocea some weeks prior. The crocea had presumably introduced a parasite I suspect, but neither showed signs at all until I found them completely missing.
Dead clam flesh is a tasty morsel for all types of fish, even those no expected to attack live clams