Common name: mushroom coral

General information

Fungia hexagonalis, commonly known as Hexagon Mushroom Coral or Hexagonal Plate Coral, is a solitary polyp coral that is part of the Fungiidae family. Unlike colonial corals, each polyp lives independently, although they may settle in groups. This species is named for its hexagonal corallites, which give it a distinctive appearance. The coral exhibits a range of colors, often vibrant, which can include hues of green, brown, and purple.

Care

Hexagon Mushroom Coral is relatively easy to maintain in a reef aquarium, provided stable conditions are met. It requires moderate to high lighting to support its symbiotic algae, zooxanthellae, which help the coral with photosynthesis. Moderate water flow is also essential to prevent sediment accumulation on its surface and to facilitate nutrient exchange. It's important to place the coral on the substrate or on a flat rock where it can expand fully without being disturbed by other aggressive corals.

Symbiosis

While Fungia hexagonalis does not have the same type of symbiotic relationships as clownfish and anemones, it does host zooxanthellae within its tissues. These microscopic algae live in a mutualistic relationship with the coral, providing it with nutrients produced through photosynthesis in exchange for protection and access to light.

Habitat

Hexagon Mushroom Coral is found in the Indo-Pacific region, typically in shallow reef environments. It prefers sandy bottoms or reef slopes where it can receive ample sunlight. This species is often found at depths ranging from the intertidal zone to about 20 meters deep, where it can make the most of the available light for its zooxanthellae.