Common name: Hump coral

General information

Porites annae, commonly known as Blue Axial Coral or Anna's Porites, is a species of stony coral that is appreciated for its unique coloration and growth form in reef aquariums. This coral is characterized by its blue tips on the axial polyps, which contrast with the more subdued body color, often a pale cream or green. It is a slow-growing species that forms massive, dome-shaped colonies in the wild.

Care

Blue Axial Coral requires moderate to high lighting conditions to maintain its vibrant coloration. It is also important to provide moderate water flow to mimic its natural habitat and to keep the coral free from sediment accumulation. Stable water parameters are crucial for the health of this coral, with particular attention to calcium, alkalinity, and magnesium levels, which support its skeletal growth.

Symbiosis

Porites annae does not have any widely known specific symbiotic relationships like those seen in clownfish and anemones. However, like many corals, it houses symbiotic algae known as zooxanthellae within its tissues. These algae provide the coral with nutrients through photosynthesis, which is a key reason why adequate lighting is essential for the coral's health.

Habitat

The natural habitat of Porites annae is typically shallow reef environments in the Indo-Pacific region. It is often found at depths ranging from the reef crest down to about 20 meters. The species thrives in areas with strong water movement and abundant light, which are conditions that should be replicated in the home aquarium for optimal health.