Common name: Star Coral

General information

Astrosclera willeyana, commonly known as Star Coral, is a species of scleractinian coral that is notable for its unique growth form and structure. Unlike many other corals, it has a massive, spherical shape with a hard, star-like pattern on its surface, which is where it gets its common name. This coral is also known for its longevity, with some individuals estimated to be over 100 years old.

Care

Star Coral is relatively hardy and can be a good choice for intermediate to advanced reef aquarists. It requires stable water conditions with moderate to high lighting and water flow. It is important to maintain calcium, alkalinity, and magnesium levels to support its skeletal growth. Star Coral does not have zooxanthellae, so it does not rely on light for nutrition, but it still benefits from the indirect feeding of plankton or coral foods.

Symbiosis

Astrosclera willeyana does not engage in the typical symbiotic relationships seen in many other corals, such as hosting clownfish or other symbiotic fauna. However, its robust structure can provide shelter and habitat for a variety of marine life within the reef ecosystem.

Habitat

This coral species is found in the Indo-Pacific region, particularly in the waters around Australia, Indonesia, and the Solomon Islands. It prefers reef slopes and lagoons, typically at depths ranging from shallow waters to about 30 meters. The Star Coral's habitat is characterized by clear, warm waters where it can grow slowly over many years, forming part of the complex reef structure.