Euphyllia yaeyamaensis (Green) Ultra is a captivating large polyp stony (LPS) coral prized for its vibrant green tentacles and unique ultra morph, which features extended, flowing polyps that add dynamic movement to reef tanks.
This medium-sized specimen is suitable for marine aquarists with some experience in LPS coral care. It requires moderate lighting and water flow to thrive, making it an excellent choice for a variety of reef setups.
Care Requirements
- Lighting: Moderate lighting, such as T5 or LED systems, is ideal to maintain vibrant colouration without causing stress.
- Water Flow: Moderate, indirect water flow helps keep the coral healthy and encourages polyp extension without damaging delicate tissues.
- Placement: Position in the middle to lower areas of the aquarium to avoid excessive light intensity and strong currents. Ensure ample space around the coral to prevent aggressive sweeper tentacle contact with neighbouring corals.
Compatibility and Reef Safety
This species is reef safe with adequate spacing. It can exhibit aggressive behaviour towards nearby corals due to its long sweeper tentacles, so careful placement is essential to prevent coral warfare.
Additional Information
- Diet: Primarily photosynthetic but benefits from occasional feeding of meaty foods such as brine shrimp or specialised coral foods.
- Minimum Tank Size: 75 litres (20 gallons) recommended to provide stable water parameters and space.
- Origin: Not Provided.
- Maximum Size: Typically grows up to 30 cm (12 inches) in diameter under optimal conditions.
With proper care, Euphyllia yaeyamaensis (Green) Ultra will be a striking and dynamic addition to your reef aquarium.



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