Common name: Clams

Bivalvia is a class of marine and freshwater mollusks with bodies enclosed by a hinged two-part shell. They include popular reef aquarium inhabitants like clams and scallops, which are appreciated for their filter-feeding capabilities and unique appearances. Bivalves often form symbiotic relationships with photosynthetic algae, such as zooxanthellae, which can provide them with nutrients through photosynthesis. This symbiosis is particularly notable in the giant clams of the genus Tridacna, which are a favorite among reef hobbyists for their vibrant colors and patterns.

1. 
   Common name: flag pen shell

   Scientific name: Atrina vexillum
2. 
   Common name: Bear paw clam

   Scientific name: Hippopus hippopus
3. 
   Common name: China clam

   Scientific name: Hippopus porcellanus
4. 
   Common name: File Clam

   Scientific name: Limaria fragilis
5. 
   Common name: Variable Thorny Oyster

   Scientific name: Spondylus varius
6. 
   Common name: crocus giant clam

   Scientific name: Tridacna crocea
7. 
   Common name: Southern giant clam

   Scientific name: Tridacna derasa
8. 
   Common name: Giant clam

   Scientific name: Tridacna gigas
9. 
   Common name: Small giant clam

   Scientific name: Tridacna maxima
10. Common name: Teardrop Maxima Clam

    Scientific name: Tridacna mbalavuana
11. 
    Common name: Fluted giant clam

    Scientific name: Tridacna squamosa