Common name: Giant Clams

Tridacna is a genus of large saltwater clams, the members of which are known as giant clams. These bivalves are known for their symbiotic relationship with photosynthetic algae, which live in their tissues and provide them with nutrients through photosynthesis. Tridacna clams are popular in reef aquariums for their impressive size and vibrant colors, which can range from blues and greens to golds and purples. They require strong lighting to support their symbiotic algae and benefit from stable water conditions and moderate water flow. They are filter feeders and also absorb dissolved nutrients directly from the water.

1. 
   Common name: crocus giant clam

   Scientific name: Tridacna crocea
2. 
   Common name: Southern giant clam

   Scientific name: Tridacna derasa
3. 
   Common name: Giant clam

   Scientific name: Tridacna gigas
4. 
   Common name: Small giant clam

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

   Scientific name: Tridacna mbalavuana
6. 
   Common name: Fluted giant clam

   Scientific name: Tridacna squamosa