What's the right Temp for a clam?

[Rockfish]

so my tank usually stays between 79.5 - 80.5 degrees..........ppl have told me that it's very bad to have a clam in anything above 78 degrees......i think that bull though.......just wondering what temp everyone's clams are at (no jokes about that sentence please!! )

[Hanser]

I've had my Maxima for a month now and my tank ranges between 79-82 F

 

Its growing (new scutes visible) and seems very happy.