Common name: Spiny File Clam

General Information

The Spiny File Clam, scientifically known as Lima lima, is a unique and captivating bivalve mollusk that has intrigued marine hobbyists for years. With its brownish-orange coloration and distinctive spiny shell, this clam adds both aesthetic appeal and biodiversity to marine aquariums. It is especially notable for its ability to swim by rapidly clapping its shells together, using jet propulsion to escape predators.

In the aquarium trade, the Spiny File Clam is valued for its striking appearance and dynamic behavior. Its swimming ability and tendency to attach itself to crevices make it an engaging addition to a reef tank. Additionally, it contributes to the natural filtration process by feeding on suspended particles, enhancing the overall health of the aquarium ecosystem.

Care

Caring for the Spiny File Clam requires attention to water quality and stability. These clams thrive in aquariums that mimic their natural reef environment, with plenty of mature live rock for secure attachment and hiding places. They prefer moderate, indirect water flow, which helps bring food particles to them without causing stress. Maintaining stable water parameters, including temperature, pH, and salinity, is crucial to prevent stress and ensure their well-being.

Diet and Feeding

In the wild, Spiny File Clams are filter feeders, subsisting on plankton and other microscopic particles. In captivity, they require a diet that includes finely powdered phytoplankton substitutes or liquid foods specifically formulated for filter-feeding invertebrates, such as marine snow or microalgae. Regular feeding with these specialized foods is essential to meet their nutritional needs and maintain their health.

Behavior and Compatibility

The Spiny File Clam is generally peaceful and can coexist with a wide variety of reef-safe fish and invertebrates. However, they should be kept away from aggressive species that might disturb them, such as triggerfish or large wrasses. Their unique ability to swim away from threats makes them a dynamic and active addition to the tank, though they usually remain stationary, attaching themselves to a substrate or hiding within crevices.

Health and Common Issues

Spiny File Clams can live for up to 3-5 years in captivity if provided with proper care. They are highly sensitive to changes in water quality and require a stable environment to thrive. Regular and frequent monitoring of water parameters, along with ensuring an adequate and consistent food supply, are key to preventing health issues.

When selecting a Spiny File Clam, look for individuals with intact, vibrant shells and active feeding behavior. Avoid clams that appear retracted or have damaged shells, as these may indicate poor health or stress.

Habitat

Lima lima is naturally found in warm, shallow waters of the Atlantic and Mediterranean regions, particularly in seagrass beds and rocky substrates. They prefer environments with plenty of hiding spots and moderate water movement, which aids in their feeding process.