Help with identifying clam

[beauft]

Hi all,

I just moved to a new house with a 65-gallon saltwater tank, so I'm learning a lot by reading the discussions here.

We have this clam that is almost as big as a football and is reddish or green-wish; it depends on the lightning lol

Does anyone know what species (or genus/family) this clam is? I want to learn more about it to keep it healthy and happy.

Thanks!

 

[OrionN]

That is a Derasa. Tridacna derasa

 

[beauft]

Thanks!

That is a Derasa. Tridacna derasa

Thanks!