Moon Beam Favia

Moon Beam Favia, Favia spp. and related species, is a fleshy reef-building coral prized for its substantial corallites, deeply textured tissue, and dramatic fluorescent coloration. This specimen displays rich burgundy to wine-red tissue surrounding intensely fluorescent yellow-green to neon green centers, producing a striking contrast under reef aquarium lighting.

Favia-type corals form colonies composed of individual corallites covered by fleshy living tissue over a calcium carbonate skeleton. The corallites can become strongly defined when the colony is expanded, producing the rounded valleys, ridges, and folds that give these corals their characteristic sculpted appearance.

The Moon Beam Favia is particularly striking because of the contrast between its deep red outer tissue and brilliant fluorescent centers. Under blue-rich lighting, the yellow-green centers can appear almost luminous against the darker surrounding tissue, creating the glowing “moon beam” effect reflected in its trade name.

These corals contain symbiotic photosynthetic dinoflagellates that supply much of their nutritional energy. Their fleshy polyps are also capable of capturing small planktonic and meaty foods, particularly when feeding tentacles are extended. Occasional targeted feeding with appropriately sized foods may supplement photosynthesis and support tissue growth.

Moon Beam Favia is best maintained under low to moderate lighting with low to moderate, indirect water movement. Excessively strong direct flow can prevent the fleshy tissue from expanding normally, while insufficient circulation may allow detritus to collect within the corallites and valleys.

Stable reef aquarium chemistry is important for long-term health and skeletal growth. Consistent alkalinity, calcium, magnesium, temperature, and salinity are preferable to frequent fluctuations. Reasonably stable nitrate and phosphate levels should also be maintained rather than attempting to keep the aquarium completely nutrient-free.

Favia-type corals can be aggressive toward neighboring corals and may extend sweeper tentacles beyond the visible edge of the colony, particularly after dark. Adequate spacing should therefore be provided to prevent contact and tissue damage.

Because aquarium specimens historically sold as “Favia” can represent more than one closely related taxonomic group, and exact species identification requires skeletal characteristics that cannot be confirmed reliably from a photograph, Favia spp. and related species is the most appropriate identification for this specimen.

Care Guide:

Scientific Identification: Favia spp. and related species
Common Name: Favia / Brain Coral
Care Level: Easy to Moderate
Lighting: Low to Moderate
Water Flow: Low to Moderate, indirect and variable
Placement: Lower to middle areas of the aquarium depending on lighting intensity
Temperament: Aggressive; may extend sweeper tentacles and sting neighboring corals
Reef Compatibility: Reef safe with adequate spacing
Feeding: Primarily photosynthetic; may also benefit from occasional appropriately sized meaty, planktonic, or coral-specific foods
Growth Form: Encrusting to massive reef-building colony with fleshy tissue covering individual corallites
Water Parameters: Maintain stable temperature and salinity along with consistent alkalinity, calcium, and magnesium. Maintain measurable and reasonably stable nitrate and phosphate levels.
Special Considerations: Allow several inches between the Moon Beam Favia and neighboring corals because feeding and sweeper tentacles may extend beyond the visible colony, particularly at night. Avoid strong direct flow that continually pushes against the fleshy tissue. Gradually acclimate the coral when moving it into stronger lighting, and avoid rapid fluctuations in alkalinity or salinity.