Common name: Knob coral

General information

Favia danae is a species of stony coral commonly found in the reefkeeping hobby. Known for its robustness and vibrant colors, it is a popular choice among aquarists. Each polyp of Favia danae is distinct with its own skeletal cup, and the coral forms a massive or dome-shaped colony that can be quite impressive in size over time.

Favia corals, in general, are appreciated for their contribution to the reef structure and biodiversity. They exhibit a variety of colors, often with contrasting centers and edges, which can range from greens and browns to bright reds and pinks.

Care

Favia danae requires moderate to high lighting conditions to thrive, as they rely on their symbiotic algae, known as zooxanthellae, for nutrition through photosynthesis. However, they are also capable of capturing plankton and should be fed occasionally with fine particulate foods to promote growth and coloration.

Stable water conditions are crucial for the health of Favia danae, with particular attention to calcium, alkalinity, and magnesium levels, which support their skeletal growth. They prefer moderate water flow, which helps in the removal of waste and delivery of nutrients.

Symbiosis

Like many stony corals, Favia danae hosts zooxanthellae within its tissues. These microscopic algae perform photosynthesis, providing the coral with essential nutrients while benefiting from the coral's waste products in a classic mutualistic relationship.

Habitat

Favia danae is found in a variety of reef environments, from shallow lagoons to deeper slopes. They are adaptable and can be found at various depths, often forming part of the reef's structure. In the wild, they are distributed across the Indo-Pacific region, contributing to the complexity and resilience of coral reef ecosystems.