Common name: Leaf coral

General information

Pavona explanulata, commonly known as Cactus Coral, Lettuce Coral, or Potato Chip Coral, is a species of small polyp stony (SPS) coral. It is known for its distinctive leafy or plating growth form, which can add a unique texture and structure to a reef aquarium. This coral exhibits a variety of colors, ranging from green to brown, and sometimes with hints of pink or purple on the edges of its plates.

Care

Cactus Coral is considered a good choice for intermediate to advanced reef aquarists due to its moderate care level. It thrives in well-lit aquariums with moderate to strong water flow, which helps to keep the coral free of detritus and provides the necessary nutrients. Pavona explanulata benefits from stable water parameters and the addition of calcium, alkalinity, and magnesium to support its skeletal growth. Target feeding is not typically necessary, as this coral can capture nutrients from the water column and also relies on its symbiotic algae, zooxanthellae, for energy through photosynthesis.

Symbiosis

Like many SPS corals, Pavona explanulata hosts zooxanthellae within its tissue. These symbiotic algae provide the coral with the majority of its nutritional needs through the process of photosynthesis. In return, the coral provides the algae with a protected environment and the compounds necessary for photosynthesis.

Habitat

Pavona explanulata is found in the Indo-Pacific region, typically in shallow reef environments. It prefers areas with strong light and water movement, which are conducive to its growth and health. In the wild, it can be found at various depths, often forming extensive plates that provide habitat for a variety of reef organisms.