Common name: lesser starlet coral

General information

The Lesser Starlet Coral, Siderastrea radians, is a hardy and adaptable species of stony coral commonly found in the Caribbean Sea. It is known for its encrusting growth form and small, circular corallites that resemble a star pattern. This coral is often a pale brown or cream color, but can exhibit a range of hues depending on environmental conditions and lighting.

Care

Siderastrea radians is a great choice for beginner reef aquarists due to its resilience to varying water conditions. It thrives in moderate lighting and water flow, making it versatile for placement within the aquarium. While it can obtain nutrients through photosynthesis via its symbiotic zooxanthellae, supplemental feeding with microplankton can promote growth and health.

Symbiosis

Lesser Starlet Coral has a symbiotic relationship with zooxanthellae, microscopic algae that live within its tissues. This relationship is crucial for the coral's survival, as the zooxanthellae provide essential nutrients through photosynthesis. In return, the coral provides a protected environment and the compounds necessary for the algae's photosynthesis.

Habitat

In the wild, Siderastrea radians is typically found in shallow waters, often in back reef and lagoon environments where it contributes to the reef structure. It can also be found in a variety of other habitats, including seagrass beds and mangrove roots, demonstrating its adaptability to different conditions.