Cyphastrea
Genus
A hardy SPS coral with densely packed small polyps. Grows in low light, recommended for beginners.

Names & Synonyms
- CommonCyphastrea
- Commonキファストレア
Overview
Cyphastrea (family Merulinidae) is a genus of encrusting to hemispherical SPS corals found on Indo-Pacific reef slopes and beneath overhangs. Their surface is densely patterned with small, rounded corallites that give colonies a distinctive granular texture. Uniquely among SPS, Cyphastrea tolerates a broad lighting range of 50–200 PAR, allowing placement in shaded reef zones where other small-polyp corals struggle. Gentle to moderate indirect flow and stable parameters (24–27°C, KH 8–10, Ca 400–430 ppm) suit them well. Color variants in green, red, orange, and purple are available; intensely fluorescent specimens command collector premiums. Growth is deliberate but consistent, gradually encrusting surrounding rock. Low to moderate care requirements and shade tolerance make Cyphastrea one of the most versatile SPS options for mixed reef displays.
Care Specifications
| Type | LPS |
|---|---|
| Temperature | 24〜27℃ |
| Specific gravity | 1.023〜1.025 |
| Salinity | 33〜35 ppt |
| KH (carbonate hardness) | 8〜12 dKH |
| Calcium (Ca) | 400〜450 mg/L |
| Magnesium (Mg) | 1280〜1350 mg/L |
| Lighting | Medium |
| Water flow | Medium |
| Placement | Middle |
Care Points
- Lighting—Rare SPS that grows in low to medium light
- Flow—Low to medium flow
- Propagation—Spreads by encrusting
- Notes—One of the hardiest among SPS corals
Regulatory & Conservation
- CITES:
- Appendix II
- Notes:
- イシサンゴ目(Cyphastrea, Merulinidae)。CITES 附属書II。
Sources
- AlgaeBarn: SPS/LPS care (PAR/flow)(careSpec)
- AlgaeBarn: Water Parameters 101(careSpec)
- DOC NZ / CITES-listed corals (Scleractinia spp. = App. II)(regulatory)
- Wikipedia(detail)
Related corals of the same type
AcanthastreaアカンサストレアlpsBeginnerAn LPS coral with metallic colors in large polyps. Australian specimens are popular as premium pieces.
Acan CoralアカンソフィリアlpsIntermediateAn LPS coral with rich colorful variations. Highly popular among collectors with many high-value specimens.
Acanthophyllia (Meat Coral)アカントフィリアlpsIntermediateLPS coral with single massive polyp. Vivid red, green, blue colors earn it the 'Meat Coral' nickname. Impressive when fleshy tissue inflates fully.
Acan LordアカンロードlpsIntermediateAn LPS coral with vivid multicolor patterns beautiful as jewels. Premium species popular among collectors.
AlveoporaアルベオポラlpsIntermediateAn LPS coral with long tentacles similar to Goniopora. Hardier and easier to keep than Goniopora.
War CoralウォーコーラルlpsBeginnerAn LPS coral with distinctive rugged appearance. Also called Favia, beautiful with fluorescent colors.Related care articles

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