two clams dead

[1sleeper]

I came home from work the other day to see my largest clam (3")is gone and the shell is open and picked clean. Just got home tonight to find my purple one suffered the same plight. There is one green left. What should I be looking for. Everything else in the tank is thriving and growing.
Thanks,
Jim

 

[skinz78]

do you have a pic of the remaining clam and a list of your water paramaters.

 

[ezcompany]

a list of all livestock as well