Just as a disclaimer, we’re not talking about temperate water clams….littlenecks, pissers, etc. These clams don’t last long in the warm tropical water of our tanks.
Otherwise, nothing wrong with a “tropical†clam in the fuge, as long as you have the light and proper calcium levels. Clams suck up calcium.
EDIT TO ADD: Oops! While I was typing, returnofsid said the same thing above.