Scientific Name: Tridacna crocea
Reef safe: Yes
Care level: Intermediate
Acclimation: Drip application
Approximate purchase size is 2-3".
Tridacna crocea are beautiful clams oftentimes displaying a variety of colorations with intricate patterns. These clams are also referred to as Crocea Clam, Boring Clam or Crocus Clam, and are the smallest of all Tridacna spp., reaching a maximum size of 6" in the wild. The Crocea Clam can penetrate through limestone substrates by releasing an acid to break down the carbonate in the stone. It uses the ridges of its thick shell to dig into the rock by opening and closing quickly through the use of its large byssal muscle, giving the clam the common name "boring clam." This burrowing behavior helps to protect it from predators such as sea stars, along with Angelfishes, Butterflyfishes, and other reef dwelling species that consume bivalves.
Tridacna clams are also filter feeders and constantly filter the water for small particulates. Clams larger than 2" do not require supplemental feedings.
Never forcibly remove an attached clam from the substrate or rockwork, as lethal damage to their foot and other tissue will be inevitable. As a last resort, to remove a clam from a hard surface gently cut each byssal thread with a razor blade as close to the attachment point of the rock or solid surface, making sure not to slice or damage any tissue.