Blue Rim Derasa
A variant of Derasa Clam (Tridacna derasa)

Photo: Stan Shebs · CC BY-SA 3.0
Representative Derasa Clam image. A confirmed image of this exact morph isn't available yet.
The classic farmed derasa, with a golden striped mantle finished by a vivid blue edge. It is among the hardier giant clams and can grow very large.