Common name: Branching Acropora

General information

Acropora gemmifera is a species of small polyp stony (SPS) coral known for its branching growth form and vibrant coloration, which can range from deep greens to blues and purples. It is a popular choice among reef aquarium enthusiasts due to its dynamic appearance and the structural complexity it adds to the reef scape.

This species is part of the Acroporidae family, which is known for its fast growth rates and contribution to reef building in the wild. Acropora gemmifera is particularly noted for its robust branches and the presence of incipient axial corallites, which are the starting points for new branches.

Care

Branching Acropora requires stable water conditions and intense lighting to thrive in captivity. It benefits from strong water flow to deliver nutrients and remove waste products. Calcium, alkalinity, and magnesium levels should be maintained within optimal ranges to support its skeletal growth.

Feeding is not typically necessary for Acropora gemmifera, as it hosts zooxanthellae, symbiotic algae that provide the majority of its nutritional needs through photosynthesis. However, occasional feeding with fine particulate foods can promote growth and coloration.

Symbiosis

Like many corals, Acropora gemmifera forms a mutualistic relationship with zooxanthellae, which live within its tissues. The coral provides the algae with a protected environment and compounds necessary for photosynthesis, while the algae produce oxygen and organic substances that nourish the coral.

Habitat

Acropora gemmifera is found in the Indo-Pacific region, typically in shallow reef environments where sunlight is abundant. It is often observed in the back reef and fore reef zones, where it contributes to the complex three-dimensional structure of the reef ecosystem.