Common name: Acropora robusta

General information

Acropora robusta is a species of small polyp stony (SPS) coral that is popular among reef aquarium enthusiasts for its robust growth and resilience. It is characterized by its branching growth form and the presence of thick, sturdy branches that can withstand strong water currents. The coral exhibits a variety of colors, ranging from green to brown, with the tips often appearing in lighter shades or even blue.

Care

Acropora robusta requires stable water conditions and intense lighting to thrive in captivity. It benefits from moderate to strong water flow, which helps to deliver nutrients and remove waste products. Calcium, alkalinity, and magnesium levels should be maintained within the appropriate ranges to support skeletal growth. Regular feeding with microplankton or coral foods can promote health and coloration.

Symbiosis

While Acropora robusta does not have specific symbiotic relationships like those seen in some anemones and clownfish, it does host a variety of small reef organisms. These include commensal crabs and shrimp, which can help keep the coral clean by removing debris and detritus.

Habitat

Acropora robusta is found in the Indo-Pacific region, particularly in reef slopes and lagoons where it forms part of the complex reef structure. It is often seen at depths where light is abundant, as it is a photosynthetic coral that relies on its symbiotic algae, zooxanthellae, for nutrition.