Common name: Knob coral

General information

Favia rotumana, commonly known as Rotuma Brain Coral, is a species of stony coral that is popular among reef aquarium enthusiasts for its hardiness and vibrant colors. This coral is characterized by its dome-shaped colonies and the distinctive valleys and ridges on its surface that resemble a brain's folds. The polyps of Favia rotumana can come in a variety of colors, including green, brown, yellow, and sometimes with contrasting coloration on the ridges and valleys.

Care

Favia rotumana is considered a hardy coral species that can thrive in a range of aquarium conditions. It prefers moderate lighting and water flow, which can be achieved with LED or T5 lighting and a controllable powerhead. This coral benefits from stable water parameters and the addition of calcium, alkalinity, and magnesium supplements to support its skeletal growth. Feeding is not essential but can promote faster growth and more vibrant colors; target feeding with coral foods or minced meaty foods can be beneficial.

Symbiosis

While Favia rotumana does not have the same level of symbiotic relationships as some other corals, it may occasionally host small invertebrates such as commensal shrimp or crabs. These invertebrates can benefit from the shelter provided by the coral's structure and, in return, may help keep the coral clean from detritus and algae.

Habitat

In the wild, Favia rotumana is found in a variety of reef environments, from shallow lagoons to deeper slopes. It is a resilient species that can adapt to different light and flow conditions, which is reflected in its ease of care in the home aquarium. This species is distributed across the Indo-Pacific region, including the Great Barrier Reef, Fiji, and Tonga.