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Cyphastrea

Cyphastrea serailia · also called Cyph, Meteor shower coral, Lesser knob coral

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Cyphastrea

Cyphastrea is a hardy encrusting small-polyp stony coral with tiny, evenly spaced corallites, prized in the hobby for high-contrast 'meteor shower' morphs (dark base with neon polyps). It is one of the easier SPS corals — adaptable to lower light and flow — making it a forgiving and colourful intermediate pick.

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Quick facts

SizeLow encrusting colony of small, evenly spaced corallites; frags start ~2-4 cm and sheets spread to 10-25+ cm across rock, sometimes branching in some species.
Lifespan5–50 years
Social needssolo
Native regionIndo-Pacific
OriginOld World
Climate🌴 Tropical
Water type🌊 Marine
FamilyMerulinidae
GenusCyphastrea

Part of the SPS Corals

Small-polyp stony corals — fast-growing branching corals demanding strong light & flow.

Acan coralAcropora coralBirdsnest coralFavia coralLeptoserisMontipora coralPavona (cactus / potato chip coral)Plate coralPocillopora (cauliflower coral)Psammocora (sandpaper coral)Stylophora (cat's paw / club finger)

Habitat & space requirements

From the minimum an animal needs to be kept humanely, up to the ideal setup. Bigger is almost always better — minimums are floors, not targets.

Photo coming soon
Minimum

Mature established reef

40+ gal cycled 1+ yr / Alk 7.5-8.5 SHOULDN'T SWING / NO3 1-5 / PO4 0.03-0.05

SPS — ADVANCED. Tank must be 12+ months old with NO parameter swings (alkalinity swings cause STN/RTN). High light, strong random flow. Many beginners lose these. Cyphastrea — encrusting SPS-like coral; tolerates a wider range than acros; medium-high light + flow.

Photo coming soon
Recommended

Stable SPS-grade reef

75+ gal SPS reef / 2-part or calc-reactor / wave maker

SPS-grade 75+ gal reef with active dosing + tightly stable parameters + high PAR (300-450) + chaotic flow. ULNS (ultra-low-nutrient) keepers run lower NO3/PO4 but the system must be stable.

Photo coming soon
Ideal

Mature SPS-dominant show reef

120+ gal SPS show reef / calc reactor + apex monitoring

Mature SPS-dominant show reef with automated dosing, real-time parameter monitoring, calcium reactor or ESV/2-part on apex, full coral spectrum lighting, chaotic gyre flow. Cyphastrea — encrusting SPS-like coral; tolerates a wider range than acros; medium-high light + flow.

Life & growth stages

How this animal changes through its life — each stage often has its own care, diet and space needs.

Photo coming soon
Planula larva

Corals begin as a free-swimming planula larva released into the water column after spawning or brooding. The tiny, ciliated larva drifts and swims until it finds suitable hard substrate to settle on.

Photo coming soon
Single polyp

Once settled, the larva metamorphoses into a single founding polyp that secretes a calcium-carbonate (or proteinaceous) base and extends a ring of tentacles to feed. Reef-building corals begin laying down skeleton at this stage.

Mature colony stage
Mature colony

The founding polyp buds asexually into a colony of many genetically identical polyps, building the species' characteristic growth form — branching, plating, encrusting, or massive. A mature colony can reproduce and contributes to reef structure.

Color & pattern variants

Natural variants occur in the wild; selectively bred (man-made) variants were developed in captivity.

Natural
Meteor Shower Cyphastrearepresentative

Meteor Shower Cyphastrea

The iconic morph — a dark purple/maroon base studded with bright neon-green or yellow polyps resembling falling meteors; the most coveted form.

Branching Cyphastrearepresentative

Branching Cyphastrea

Species/forms (e.g. Cyphastrea decadia) that throw up short branches from the encrusting base rather than staying flat, sold as 'branching cyph'.

Meteor Showerrepresentative

Meteor Shower

CommonBeginner

The classic Cyphastrea morph: a turquoise-to-teal-green encrusting base studded with bright red/orange corallites that look like a shower of falling embers. The contrast of a cool base and hot polyps is what made the moon-coral genus a hobby staple.

Tip: Place low-to-mid in the tank under low-to-moderate light (roughly 100-200 PAR) with gentle-to-moderate flow; too much PAR can wash out the green base, while steady flow keeps detritus off the encrusting tissue. It encrusts fast and can sting neighbors, so leave open rock around it.

Purple People Eater (Master PPE)representative

Purple People Eater (Master PPE)

UncommonBeginner

A green-based Cyphastrea with bright purple corallites/eyes that 'smear' and bleed into the green tissue as the colony grows. The purple-on-green is among the most recognizable Cyphastrea color schemes.

Tip: Low-to-moderate light and flow mid-tank; medium PAR helps the purple eyes stay vivid without bleaching the green base. It is a fast, easy grower.

Alien Poxrepresentative

Alien Pox

UncommonBeginner

A green-based Cyphastrea covered in pink/magenta corallites that look like an outbreak of alien 'pox' across the tissue. A green-and-pink contrast with a slightly otherworldly texture.

Tip: Low-to-medium light and moderate flow; place mid-tank and keep flow steady so the dense corallites stay clean of detritus.

Tyree Brick Redrepresentative

Tyree Brick Red

UncommonBeginner

A near-monochrome Cyphastrea with a bright brick-red/orange base that deepens into even more saturated red polyps. A bold, solid-red encruster rather than a contrast morph.

Tip: It does best in low light and low flow on a lower rock; under those conditions it grows quickly and the red stays rich rather than browning out. Great for darker gaps and crevices in the aquascape.

Solar Flarerepresentative

Solar Flare

UncommonBeginner

An orange-dominant Cyphastrea with bright orange polyps and a swirled red/orange pattern described as a hybrid look between orange and red types. A warm, fiery single-family coloration.

Tip: Prefers lower light but can be acclimated up; start it on a lower rock with moderate flow and raise light gradually to intensify the orange.

Pumpkin Patchrepresentative

Pumpkin Patch

CommonBeginner

A Cyphastrea named for its field of bright orange polyps that look like a patch of little pumpkins over a darker base. Cheerful, warm-toned and very approachable.

Tip: Low-to-moderate light and gentle flow on a lower rock; keep light modest so the orange polyps stay bright rather than browning.

Selectively bred (man-made)
Designer Cyphastrearepresentative

Designer Cyphastrea

Aquacultured, named line-bred selections chosen for extreme polyp-to-base colour contrast and propagated as frags.

Bizarrorepresentative

Bizarro

UncommonBeginner

A blue-based Cyphastrea with bright red/orange polyps, essentially a cooler, bluer take on the meteor-shower color theme. The deep blue body makes the warm corallites pop hard under blue-heavy LEDs.

Tip: Give it moderate flow and low-to-mid light; the blue base holds best when it isn't blasted with high PAR, so favor a shaded ledge or lower rock. It encrusts readily and is forgiving of minor parameter swings.

Rainbow Madnessrepresentative

Rainbow Madness

UncommonBeginner

A multicolor Cyphastrea showing a mix of green, orange and pink tones across the base and corallites for a confetti-like 'rainbow' effect. One of WWC's flagship colorful Cyphastrea strains.

Tip: Low-to-moderate light and moderate flow on a low-to-mid rock; rotating it so all sides get even light helps the multiple colors develop uniformly as it encrusts.

Skittles Bombrepresentative

Skittles Bomb

UncommonBeginner

A vivid rainbow Cyphastrea: a blue-to-purple base that grows pink/orange centers and develops a spread of orange and green polyps as it encrusts, for a candy-colored 'taste the rainbow' look.

Tip: Mid-level placement with moderate flow and low-to-medium light keeps the base color saturated; very high light tends to bleach the base toward tan. It encrusts onto almost anything, so leave room to spread.

Mardi Grasrepresentative

Mardi Gras

CommonBeginner

A festive Cyphastrea with dark, near-black corallites set against a bright green encrusting base, for a high-contrast 'Mardi Gras' look. An affordable, colorful encruster.

Tip: Place on lower rock with moderate flow and low-to-medium light; it does well in nutrient-rich water, encrusts readily, and can sting, so leave open rock around it and keep it off neighboring corals.

Master Blasterrepresentative

Master Blaster

UncommonBeginner

A high-contrast Cyphastrea with a green base and intensely bright red/orange corallites that 'blast' across the colony. Reads as a punched-up, supersized meteor-shower type.

Tip: Moderate flow and low-to-medium light on a mid rock; keep flow strong enough to prevent detritus settling between the prominent corallites.

Peppermintrepresentative

Peppermint

UncommonBeginner

A two-tone red-and-white Cyphastrea with a red base and pale white polyps for a clean, candy-cane 'peppermint' contrast that shows well in blue or white light.

Tip: Low-to-medium light and moderate flow; it brings red and white color to shaded or lower-light areas, and keeping alkalinity stable helps it hold color as it encrusts.

Hi-Ceee (Grafted Hi-C)representative

Hi-Ceee (Grafted Hi-C)

RareIntermediate

A grafted Cyphastrea fusing intensely bright orange/citrus tissue with a neon green-to-teal base, named after the Hi-C orange-drink color. The grafted patches give a striped, two-toned citrus appearance.

Tip: Low-to-moderate light and moderate flow mid-tank; with grafted corals, give it room to encrust so both color zones can spread and the graft line stays distinct.

Prismatic Branchingrepresentative

Prismatic Branching

RareIntermediate

A branching-form Cyphastrea (Cyphastrea decadia type) with structured, snaking branches and a prismatic multi-color blend of polyps rather than the typical flat encrusting plate. The 3D growth makes it stand out from common moon corals.

Tip: Mount in low-to-moderate flow with low-to-medium light and give it open space; branching Cyphastrea need room and good flow around the branches to grow their structure cleanly.

Strawberry Branchingrepresentative

Strawberry Branching

RareIntermediate

A branching Cyphastrea decadia with long pinkish snaking branches dotted with bright strawberry-red polyps. Combines unusual 3D structure with vivid red-on-pink color.

Tip: Place in moderate flow with low-to-medium light and leave space around the branches; good flow keeps detritus from collecting in the branch crotches.

Leafy Greensrepresentative

Leafy Greens

UncommonBeginner

A predominantly green Cyphastrea with a bright green base and green-toned polyps for a clean, near-monochromatic 'leafy' green colony. A mellower, all-green option among the louder morphs.

Tip: Low-to-medium light brings out the green fluorescence; keep moderate flow on a mid-to-low rock and it will encrust steadily.

Bling Blingrepresentative

Bling Bling

UncommonBeginner

A purple-to-violet-based Cyphastrea with bright yellow (yellow-green) mouths that glow like little jewels against the dark body. The yellow-on-purple contrast is the namesake 'bling.'

Tip: Mid placement with low-to-moderate flow and moderate light; the purple base holds color better out of the highest-PAR zones. It is semi-aggressive and can extend tentacles onto neighbors, so give it space.

Fender Benderrepresentative

Fender Bender

RareIntermediate

A grafted Cyphastrea with a spliced, two-tone look fusing red/pink and blue-to-teal tissue along a graft line, with white accents. The split paint-job appearance is the draw.

Tip: Moderate light and flow with room to spread; with grafted pieces, even light on all sides keeps both color zones growing and the graft line crisp.

Circuit Breakerrepresentative

Circuit Breaker

UncommonIntermediate

A grafted Cyphastrea showing a vivid two-tone color split across fused tissue zones, most often described as yellow-and-orange (sometimes orange-and-green), like an electric circuit board. The grafted color split is the highlight.

Tip: Low-to-medium light (roughly 150-250 PAR) and moderate flow mid-tank; as with other grafted Cyphastrea, give it room to encrust so the contrasting color zones remain distinct.

Habitat & enclosure

Place in the **low to mid** zone in **moderate, indirect flow**, under **low-to-moderate light, roughly 50-150 PAR**. It colours up best with strong blue light but does not need high intensity, and excessive light can wash out its contrast. Needs stable reef chemistry: SG ~1.025, 76-80°F, pH 8.1-8.4, **Ca 420-450 ppm, Alk 8-9 dKH, Mg 1300-1400 ppm**, with low, stable nitrate/phosphate. Cyphastrea tolerates slightly higher nutrients than most SPS, which can actually deepen its colours.

Substrate

Glue frags to live rock or a frag plug/disc with reef-safe gel glue, then let it encrust outward over the rock. Best on rockwork rather than sand, where it can spread and stay clear of settling detritus.

Equipment & setup

Provide low-to-moderate reef lighting heavy on the blue spectrum (LED/T5 at ~50-150 PAR) and moderate indirect flow. Run a protein skimmer and maintain Calcium, Alkalinity and Magnesium with a balanced 2-part, kalkwasser or reactor regime.

Diet

Photosynthetic via zooxanthellae and an active feeder for its size — its small polyps extend at night and readily take fine coral foods, phytoplankton and amino acids. Light feeding boosts growth and colour, though stable water and light remain the foundation.

Behavior & temperament

A peaceful, slow-to-moderate encrusting colony that spreads across rock in a thin sheet. It is **not aggressive** and has no significant sweeper tentacles, but will slowly encrust over anything in its path, so leave a margin around neighbours. It does not host clownfish or guard crabs.

Health

Hardy and pest-resistant overall. The main concern is **detritus settling on the flat encrusting surface** in low flow, which can smother polyps, plus standard **RTN/STN** risk from alkalinity swings. Good indirect flow and periodic basting keep it clean. Dip and inspect new frags as routine.

Tips, DIY & hacks

A superb low-light SPS for filling shaded rock with colour. **Run plenty of blue light** to bring out the neon 'meteor shower' polyps, and keep nutrients in a healthy low-but-not-zero range to deepen the dark base. Frag by cutting a chunk of encrusted rock or plug with a band saw and gluing it to a new plug.

Sources

  1. Cyphastrea serailia — WoRMS (World Register of Marine Species) (reference)
  2. Cyphastrea Encrusting SPS Care — Reef2Reef (care guide)
  3. Wikipedia: Cyphastrea (wiki)