Euphyllia glabrescens, commonly known as the Rapunzel Holy Grail coral, is a stunning large polyp stony (LPS) coral prized for its long, waving tentacles that add dynamic movement and vibrant colour to reef tanks.
This small specimen is ideal for hobbyists seeking to introduce a visually striking coral that thrives under moderate lighting and gentle to moderate water flow. Euphyllia glabrescens requires careful placement to avoid aggressive interactions with neighbouring corals, as its sweeper tentacles can extend and sting nearby species.
Care Recommendations:
- Lighting: Moderate lighting is preferred, such as T5 fluorescents or LED systems designed for reef aquariums.
- Water Flow: Gentle to moderate water movement ensures optimal health and polyp extension without causing tissue damage.
- Placement: Provide ample space around the coral to prevent contact with other corals, ideally positioning it on the lower to middle areas of the tank.
- Diet: While primarily photosynthetic via symbiotic zooxanthellae, occasional feeding of meaty foods like brine shrimp or coral-specific supplements can promote growth.
- Tank Size: A minimum of 90 litres (approximately 20 gallons) is recommended to maintain stable water parameters.
Regular monitoring of water quality, including calcium, alkalinity, and magnesium levels, will support healthy skeletal growth. This coral is suitable for intermediate aquarists familiar with LPS coral care.

