Grape Coral Care Guide
Grape Coral (Euphyllia cristata) is a LPS coral. Care covers 75-175 PAR, medium flow, reef parameters and feeding; intermediate level.
Compiled by Aquairi from published sources · Published · Updated
Overview
Grape Coral (Euphyllia cristata) is a LPS coral in the family Euphylliidae. Less common Euphyllia with cluster-like polyp groups resembling grape bunches. Slower growth than ancora/divisa.
Taxonomy
- Family: Euphylliidae
- Genus: Euphyllia
- Scientific name: Euphyllia cristata
- Common synonyms: Cristata, Grape Euphyllia
Habitat
In the wild, Euphyllia cristata is reported from Indo-Pacific, where it occupies mid to lower reef slopes and lagoons (typically 5-30 m). The species adopts a branching growth form on hard substrate within zooxanthellate reef communities.
Tank requirements
- Salinity (specific gravity): 1.024-1.026
- Temperature: 24-26 °C (75-79 °F)
- pH: 8.1-8.4
- Carbonate hardness (dKH): 8-11
- Calcium: 400-450 ppm
- Magnesium: 1280-1350 ppm
- Phosphate (max): 0.03 ppm
- Nitrate (max): 5 ppm
- Minimum system age: 3 months
Placement and lighting
- PAR (placement zone): 75-175 PAR
- Water flow: medium
Mount this LPS coral on the lower or mid rockwork or on the sand bed (for free-living forms) where light is moderate. Strong direct flow can damage the fleshy tissue; aim for indirect, varied movement.
Feeding
Euphyllia cristata hosts symbiotic zooxanthellae and derives most of its energy through photosynthesis. Supplemental target feeding accelerates growth and supports colouration; commonly accepted items include mysis, reef-roids, amino-acids. Feed once or twice per week after lights-out, when polyps are extended.
Compatibility
This coral is moderately aggressive toward neighbours. It extends sweeper tentacles capable of stinging adjacent corals, so leave generous spacing (10-20 cm) between colonies. Reef-safe with most fish and invertebrates.
Care notes
Difficulty level: intermediate. Reported skeletal growth in well-tuned reef tanks is approximately 0.2-0.5 cm/month. Propagation by fragmentation is straightforward for branching colonies — separate branches or polyps with a bone cutter, glue to plug, allow 1-2 weeks for healing. Maintain stable alkalinity (avoid swings above ±0.5 dKH per day) to preserve tissue health.
Euphyllia cristata (Grape Coral) Propagation Guide
Overview
Euphyllia cristata, the grape coral, is a less common large-polyped stony coral in the family Euphylliidae. It grows as a phaceloid colony with long tubular tentacles tipped with knob-like ends, but its skeleton is short, thin, and fragile, sitting close to the substrate. Reef Builders notes that colonies of more than four or five polyps are very unusual, and that in nature it lives under bommies below other corals.
Reproductive Mode
Propagation in the aquarium is asexual, by dividing the phaceloid skeleton between polyp heads, the same principle used for other branching Euphyllia. Because E. cristata grows slowly and naturally stays small, frags are taken sparingly and given time to recover.
Fragging / Asexual Propagation
- Wait until a colony carries several heads, which can take time given its slow growth.
- Cut through the thin skeleton between heads with coral cutters; handle gently because the skeleton is fragile and breaks easily.
- Keep cuts on the bare skeleton rather than through polyp flesh.
- Dip the frags to remove pests before mounting.
- Glue each frag to a plug in low flow and medium light, and feed lightly to support recovery.
Reef Builders suggests that with more attention to feeding in captivity, this normally slow species could grow faster than it does in its shaded natural habitat.
Conditions for Propagation
Maintain temperature near 24-26 degrees Celsius and pH 8.1-8.4 with steady alkalinity, calcium, and magnesium. Medium light and moderate flow suit recovery; a couple of feedings a week reflect its cryptic, food-reliant reef niche.
Sexual Reproduction
Sexual reproduction occurs on the reef and is not used by aquarists. Notably, E. cristata was excluded from the genetic studies that moved several relatives into the genus Fimbriaphyllia, and it shares skeletal traits with E. glabrescens. Captive spawning is not documented in the consulted sources.
Common Challenges
As a Euphyllia, grape coral can extend stinging tentacles, so frags should be given space from other corals. The thin, fragile skeleton makes clean fragging harder, and freshly cut Euphyllia tissue is vulnerable to brown jelly, which spreads quickly between corallites.