Common name: File Clam

General information

The File Clam, scientifically known as Limaria fragilis, is a bivalve mollusk that is popular among marine aquarium enthusiasts for its unique appearance and behavior. This species is often referred to as the Flame Scallop due to its vibrant red mantle edges that resemble flames. Unlike true scallops, File Clams have a byssus, a bundle of filaments they use to attach themselves to substrates or even corals.

Care

File Clams require a specialized care regimen due to their feeding habits. They are filter feeders and need a constant supply of fine particulate food, such as phytoplankton or specially formulated clam foods. Stable water quality with low nitrate levels is crucial for their health. They should be placed in a spot with moderate water flow to facilitate feeding.

Reproduction

In the wild, File Clams are broadcast spawners, releasing eggs and sperm into the water column where fertilization occurs. In the aquarium, breeding is rare, but hobbyists can encourage spawning by maintaining excellent water quality and providing a varied diet.

Symbiosis

Some File Clams, including Limaria fragilis, host symbiotic zooxanthellae in their tissues, similar to corals. These algae provide the clams with additional nutrients through photosynthesis. However, unlike giant clams, File Clams do not rely heavily on this symbiosis and still require direct feeding.

Habitat

File Clams are found in a variety of marine environments, from shallow reefs to deeper waters. They prefer to attach to substrates in areas with moderate to strong currents, which aids in their filter-feeding lifestyle.