Metalic Green Plate Coral

Heliofungia actiniformis, commonly known as the Metallic Green Plate Coral, is a solitary species of mushroom coral belonging to the Fungiidae family. This coral is widely recognized for its vibrant metallic green coloration and unique plate-like structure, which can reach impressive diameters of up to 30 cm. Found primarily in the shallow waters of the Indo-Pacific region, H. actiniformis thrives on sandy substrates and is often seen in areas with moderate water flow.

As a zooxanthellate coral, the Metallic Green Plate Coral has a symbiotic relationship with photosynthetic algae, known as zooxanthellae, which reside within its tissues. This relationship allows the coral to derive energy from sunlight, contributing to its stunning coloration and overall vitality. In addition to photosynthesis, this species also captures plankton and other small organic particles from the water, enhancing its nutritional intake.

The behavior of H. actiniformis is intriguing; it exhibits a unique expansion and contraction mechanism, which not only aids in feeding but also provides protection from environmental stressors. When threatened or during low light conditions, the coral can retract its tentacles and body, becoming almost imperceptible against its surroundings. This adaptability is crucial for survival in the dynamic reef ecosystems where it resides.

However, the Metallic Green Plate Coral faces threats from climate change, over-collection for the aquarium trade, and disease, leading to its vulnerable status on the IUCN Red List. Conservation efforts are essential to maintain healthy populations of this beautiful coral species in the wild.

To successfully care for Heliofungia actiniformis in aquarium settings, maintaining stable water parameters is crucial. The ideal temperature range is between 24°C and 28°C, with a salinity level of 1.020 to 1.025 ppt. The pH should be maintained between 8.1 and 8.4 to ensure optimal health. A minimum tank size of 100 liters is recommended to provide ample space for growth and expansion.

Feeding H. actiniformis involves a combination of both direct feeding and reliance on light for photosynthesis. Supplement its diet with high-quality plankton or coral pellets several times a week, while also ensuring adequate lighting to support its zooxanthellae. This species is generally compatible with other peaceful corals and marine life, although care should be taken to avoid aggressive tank mates that may compete for space or resources.

Acclimation is vital when introducing this coral to a new environment; it should be gradually acclimated over several hours to avoid shock. Quarantine procedures are also advisable to check for pests or diseases before adding it to the main display tank. Regular monitoring of water conditions and coral health will help ensure a thriving ecosystem for this stunning coral species.

The Metallic Green Plate Coral is suitable for shipping, provided that proper care is taken. It should be packed securely to prevent damage, typically allowing for a density of 1-2 pieces per shipping container. Temperature sensitivity requires maintaining water temperatures between 24°C and 28°C during transit. As a CITES Appendix II species, it is essential to comply with regulations regarding export and trade to ensure sustainable practices.