Scolymia corals, often called Doughnut Corals, are prized large polyp stony corals known for bold color, round fleshy structure, and showpiece appeal in reef aquariums. Red, orange, green, blue, pink, and rainbow Scolymia corals can become standout centerpieces in lower-light reef zones, LPS gardens, and collector-style displays.

Scolymia corals are beautiful and generally manageable in stable reef tanks, but they should not be treated as indestructible. Their large fleshy tissue can be damaged by sharp rock, strong direct flow, aggressive neighbors, poor handling, unstable water chemistry, or excessive light. The best results come from gentle placement, stable parameters, careful feeding, and patient observation.

At Extreme Corals, Scolymia corals are best viewed as premium fleshy LPS corals that reward consistency. This guide explains Scolymia coral care, including lighting, water flow, placement, feeding, water parameters, acclimation, tank mates, pests, common problems, and signs of a healthy Scolymia. For more reef care help, you can also review our coral care guide, coral placement guide, and coral quarantine guide.

What Is a Scolymia Coral?

Scolymia is a solitary fleshy LPS coral with a hard calcium carbonate skeleton and a large, rounded polyp. Its circular shape is why many reef keepers call it a doughnut coral. A healthy Scolymia usually shows full tissue inflation, strong color, and a visible feeding response when offered appropriate food.

Scolymia corals are popular because they offer:

• Bright, high-contrast coloration
• Round showpiece shape
• Large fleshy tissue with strong texture
• Excellent visual appeal on the sandbed or lower reef
• Moderate care needs in stable reef tanks
• Collector value because many color morphs are limited and slow growing

Scolymia corals are often purchased as individual showpiece corals rather than fast-growing colony corals. That means placement, handling, and long-term stability matter from the beginning.

Natural Habitat and Reef Tank Behavior

Scolymia corals are associated with Indo-Pacific reef regions, including Australia and parts of the Pacific where they are found on reef slopes, sandy rubble zones, and lower reef areas. In these habitats, they often receive moderate light, gentle to moderate water movement, and enough open space for fleshy tissue expansion.

In a reef aquarium, this natural background points toward lower placement, low to moderate lighting, and gentle indirect flow. A healthy Scolymia should inflate during the day, hold stable color, show no exposed skeleton, and respond to feeding without staying constantly contracted.

Scolymia Coral Color Varieties and Patterns

One of the biggest reasons reef keepers love Scolymia corals is their intense color. Some specimens show solid red, orange, green, or blue coloration, while others display multiple colors, streaks, rings, speckles, or rainbow patterns.

Common Scolymia color traits include:

• Bright red or orange tissue
• Green mouths or contrasting centers
• Blue, teal, purple, or pink accents
• Rainbow patterning with multiple color zones
• Radial streaks or ring-like patterns
• Strong fluorescence under blue reef lighting

Color is important, but health is more important. A healthy Scolymia should have full tissue, stable color, no spreading recession, and no brown jelly or slimy decay.

Best Water Parameters for Scolymia Coral

Stable water chemistry is one of the most important parts of Scolymia coral care. Scolymia can be hardy in well-maintained systems, but sudden swings in salinity, alkalinity, temperature, nitrate, or phosphate can cause tissue recession, poor inflation, fading, or slow decline.

Scolymia usually does best in clean but not stripped reef water. Ultra-low nutrients can cause pale tissue and poor fullness, while excessive nutrients can fuel algae and bacterial problems around damaged skeleton or coral edges. For a deeper chemistry reference, review our reef tank water parameters guide.

Lighting Requirements for Scolymia Coral

Scolymia usually prefers low to moderate reef lighting. A practical starting range is often around 50-120 PAR, depending on the coral’s previous lighting, tank depth, color, and health.

Too much light can cause bleaching, shrinking, fading, or tissue recession. Too little light can reduce color and slow recovery. New Scolymia corals should usually start in lower to moderate light and be adjusted gradually only after they settle. For more detail on PAR, spectrum, and coral acclimation, review our reef tank lighting guide.

Signs Scolymia may be getting too much light include:

• Faded or washed-out color
• Bleaching or paling
• Reduced daytime inflation
• Tissue pulling away from the skeleton
• Better expansion in shaded periods

Blue-heavy reef lighting can make Scolymia colors glow, but tissue health and full inflation matter more than pushing maximum brightness.

Water Flow for Scolymia Coral

Scolymia prefers low to moderate indirect flow. The coral should receive enough water movement to prevent detritus buildup and support gas exchange, but not enough direct current to fold, tear, or irritate the fleshy tissue.

Good Scolymia flow should:

• Move gently around the coral
• Prevent debris from settling on the tissue
• Allow the coral to stay inflated
• Avoid direct powerhead blasts
• Support feeding response and waste removal

Strong direct flow can cause tissue damage where the flesh meets the skeleton. If the coral stays tight or recedes on the side facing a pump, redirect the flow or move the coral to a calmer area. For broader flow planning, read our water flow and coral health guide.

Best Placement for Scolymia in a Reef Tank

Scolymia is usually best placed on the sandbed, a smooth lower rock ledge, or a stable lower reef area where it receives low to moderate light and gentle indirect flow. Because the coral has large fleshy tissue, it should not be wedged into sharp rockwork.

Good placement options include:

• Sandbed placement with stable support
• Smooth lower rock shelves
• Open LPS zones with gentle flow
• Lower-light areas away from intense LEDs
• Spaces away from aggressive neighboring corals

Avoid placing Scolymia near torch corals, chalices, Galaxea, aggressive brain corals, or any coral that may sting it. The tissue can inflate well beyond the skeleton, so leave space for expansion. For a complete spacing strategy, review our coral placement guide.

Feeding Scolymia Coral

Scolymia is photosynthetic, but it often benefits from occasional target feeding. Feeding can support fuller tissue, color, recovery, and long-term health when done carefully.

Good foods for Scolymia include:

• Mysis shrimp
• Small pieces of marine shrimp
• Finely chopped fish or clam
• Small LPS coral pellets
• Zooplankton-based coral foods

Feed small portions once or twice per week as a safe starting point. Avoid oversized food pieces and heavy feeding because excess food can raise nutrients, fuel algae, and increase bacterial risk. A healthy Scolymia should be able to slowly move food toward its mouth without the food rotting on the tissue.

Handling and Acclimation

Scolymia should be handled very carefully because its fleshy tissue can tear against the skeleton or rockwork. Avoid touching the inflated tissue directly. Handle the base or skeleton whenever possible, and never squeeze the coral.

Good acclimation practices include:

• Temperature acclimate the coral.
• Inspect for tissue damage, pests, algae, and recession.
• Dip only when appropriate and follow product directions.
• Start in low to moderate lighting.
• Use gentle indirect flow.
• Avoid repeated moves after placement.

A new Scolymia may take time to fully inflate after shipping, dipping, or handling. Stable low-stress placement is usually better than constant repositioning. If possible, quarantine new corals before display placement by following our coral quarantine guide.

Tank Mates and Compatibility

Scolymia can be kept with many peaceful reef fish and invertebrates, but it should be protected from animals that nip fleshy tissue, steal food aggressively, or bury the coral in sand.

Good tank mates often include:

• Clownfish
• Gobies
• Blennies
• Peaceful wrasses
• Reef-safe snails
• Cleaner shrimp with caution during feeding

Use caution with some angelfish, butterflyfish, large hermit crabs, and shrimp that repeatedly steal food from the coral. Scolymia should also be kept away from aggressive corals with sweepers or strong stings.

Growth Rate and Reproduction

Scolymia corals are slow-growing solitary corals. Unlike many branching corals or fast-spreading soft corals, they do not quickly fill rockwork with new heads. Their value comes from color, inflation, tissue health, and showpiece presence rather than fast propagation.

In nature, Scolymia can reproduce sexually by releasing eggs and sperm into the water, where fertilized larvae eventually settle and grow. In home reef aquariums, hobbyists usually maintain individual specimens rather than expecting fast reproduction.

Long-term success depends on:

• Stable salinity and temperature
• Consistent alkalinity, calcium, and magnesium
• Low to moderate lighting
• Gentle indirect flow
• Careful feeding
• Protection from stings and tissue damage

Common Scolymia Coral Problems

Most Scolymia problems come from excessive light, strong direct flow, unstable water chemistry, rough handling, coral aggression, pests, algae irritation, shipping stress, or bacterial issues.

Tissue Recession

Tissue recession may be caused by alkalinity swings, direct flow, excessive light, rough placement, coral stings, pests, poor water quality, or physical damage. Check water parameters and inspect the area around the coral carefully.

Bleaching or Faded Color

Bleaching or fading is often connected to too much light, heat stress, low nutrients, or sudden lighting changes. Move the coral lower or reduce lighting gradually if light stress is likely.

Poor Inflation

Poor inflation may be caused by strong flow, lighting stress, unstable water, recent handling, pests, fish nipping, or nearby coral aggression. Review recent changes before moving the coral repeatedly.

Brown Jelly or Slimy Tissue

Brown jelly or slimy tissue decay is a serious warning sign. Improve water quality, increase appropriate indirect flow, isolate if needed, and consider a coral dip when appropriate.

Pests and Irritation

Flatworms, nudibranchs, nuisance algae, and hitchhikers can irritate Scolymia tissue. Inspect new corals carefully and review our coral pests and predators guide if the coral declines without an obvious light, flow, or water chemistry issue.

Maintenance Tips for Scolymia Corals

Scolymia care is mostly about protecting the fleshy tissue and keeping the reef stable. A well-placed Scolymia should not need constant adjustment.

Helpful maintenance habits include:

• Keep salinity and temperature stable.
• Test alkalinity regularly.
• Use gentle indirect flow.
• Remove detritus nearby with a turkey baster.
• Keep sand from burying the tissue.
• Feed small portions when tentacles are visible.
• Watch for aggression from nearby corals.

Avoid moving a Scolymia unless there is a clear problem with light, flow, aggression, or sand irritation. Repeated movement can slow acclimation.

Signs of a Healthy Scolymia Coral

A healthy Scolymia should look full, colorful, and clean. It may inflate more during certain parts of the day and extend feeding tentacles after lights dim or when food is present.

Healthy signs include:

• Full fleshy inflation
• Stable bright color
• No exposed skeleton
• No spreading recession
• No brown jelly or tissue decay
• Good feeding response
• Clean placement without sand or detritus buildup

A Scolymia that stays inflated and holds color is usually doing well. A coral that stays shrunken, pale, slimy, or receding needs closer inspection.

Scolymia Conservation and Responsible Reef Keeping

Scolymia corals are slow-growing and often limited in availability, which is one reason healthy specimens are so valued by reef keepers. Responsible coral keeping means choosing healthy corals, avoiding unnecessary losses, supporting reputable suppliers, and caring for each specimen long term.

Conservation-minded reef keeping includes:

• Buying from reputable coral vendors
• Choosing healthy specimens instead of damaged bargain corals
• Quarantining and inspecting new arrivals
• Maintaining stable reef tank conditions
• Avoiding impulse purchases that do not fit your tank
• Learning coral-specific care before buying rare pieces

The best way to appreciate the rarity and beauty of Scolymia corals is to keep them healthy for the long term.

Related Corals You May Also Like

If you like Scolymia corals, these related coral categories and care guides can help you build a colorful LPS reef tank:

• LPS Corals - Browse colorful large polyp stony corals for reef aquariums.
• New Arrival Corals - See recently added WYSIWYG corals for your reef tank.
• Scott's Handpicked Corals - Explore standout corals selected for color and quality.
• Acanthophyllia Coral Care Guide - Compare another fleshy showpiece LPS coral.
• Trachyphyllia Coral Care Guide - Learn care for another colorful sandbed brain coral.
• Lobophyllia Coral Care Guide - Review care for a larger fleshy brain coral.
• Coral Growth Guide - Understand coral skeleton growth, tissue health, and reef tank stability.
• Coral Care Guides - Browse coral care resources for reef tank success.

Shop Scolymia and Showpiece LPS Corals

Scolymia coral can be a stunning centerpiece for reef keepers who want bold color, fleshy texture, and collector-level beauty. With low to moderate lighting, gentle indirect flow, stable water chemistry, careful feeding, and safe placement, Scolymia can remain healthy, inflated, and colorful in a reef aquarium.

Browse LPS corals, new arrival corals, and featured corals at ExtremeCorals.com to find healthy corals that match your reef tank.

Frequently Asked Questions About Scolymia Coral Care

Is Scolymia coral beginner friendly?

Scolymia can be manageable for newer reef keepers with stable tanks, but it is best for hobbyists who can maintain stable water chemistry, low to moderate light, gentle flow, and careful placement.

How much light does Scolymia need?

Scolymia usually does best under low to moderate lighting, often around 50-120 PAR. Avoid placing it under intense light too quickly.

What flow is best for Scolymia coral?

Scolymia prefers low to moderate indirect flow. Strong direct flow can irritate or damage fleshy tissue.

Where should I place Scolymia in a reef tank?

Scolymia is usually best placed on the sandbed, a smooth lower rock ledge, or a stable lower reef area with gentle flow and lower to moderate lighting.

Does Scolymia need feeding?

Scolymia is photosynthetic but often benefits from occasional target feeding with small meaty foods or LPS coral foods.

Why is my Scolymia shrinking?

Scolymia may shrink because of too much light, strong flow, unstable salinity, alkalinity swings, pests, fish nipping, nearby coral aggression, or shipping stress.

Can Scolymia be kept on rockwork?

Scolymia can be placed on smooth lower rockwork if it is stable and the tissue will not rub against sharp rock. Many reef keepers prefer sandbed placement.

Why are Scolymia corals expensive?

Scolymia corals are slow-growing, colorful, limited in availability, and highly sought after as showpiece LPS corals, especially rainbow and rare color morphs.

About the Author

Scott Shiles is the owner of ExtremeCorals.com, which he has operated for over 25 years and is recognized as one of the early dedicated live coral websites on the internet. A lifelong reef keeper since 1984, Scott has decades of hands-on experience maintaining marine aquariums and previously owned and operated a brick and mortar aquarium retail store for 10 years, including five years alongside Extreme Corals. He holds a degree in Marine Biology and has personally selected and sold hundreds of thousands of live corals. An avid scuba diver who has explored reef systems around the world, Scott shares practical coral care and husbandry knowledge based on real world reef experience.