Bird’s Nest Coral Care Guide

Bird’s nest coral is a small polyp stony coral (abbreviated usually as  SPS by many aquarium owners) with thin yellow, green, purple, or pink branches that grow into a densely intertwined mass resembling a bird’s nest. (No one said biologists were creative with their naming schemes.)

As far as SPS corals go, the bird’s nest coral is one of the easiest. But that doesn’t mean this species is suitable for the uninitiated aquarist to plunk into a reef tank. Caring for any coral—especially an SPS coral—is a moderately difficult endeavor best left to those who have achieved at least SOME level of reef aquarium success.

But if you can meet its water quality and lighting requirements? A small frag or broken branch may be all you’ll need to grow a nice-sized colony in your reef tank.

Table of Contents: Bird’s Nest Coral Care

Looking for something specific regarding bird’s nest coral management? You can use this handy TOC to jump to a specific topic. But the entire article’s available for anyone who wants to gain a thorough understanding of this gorgeous SPS species.

Quick Facts

• Scientific Name: Seriatopora hystrix
• Common Names: Bird’s nest coral, Needle coral, Finger coral, Brush coral
• Aggression Level: Low, peaceful
• Care Level: Moderate overall; Within the SPS category – Moderately-easy
• Flow: Moderate to high
• Lighting: Strong
• Placement: Close to lights
• Feeding: Recommended for maximum health and growth. Use tiny particle (planktonic or planktonic-sized) foods

Natural Habitat of Bird’s Nest Corals

The bird’s nest coral (Seriatopora hystrix) belongs to the Pocilloporidae family, which also includes Pocillopora and Stylophora corals—species frequently encountered in the hobby. These corals share several key attributes, including their arborescent (tree-like) branching forms.

Bird’s nest corals have an extensive natural range. They are found along the east coast of Africa, the Mauritius Islands, Madagascar, the Red Sea, the Cocos Island Ridge, and throughout Australia’s coastal regions, including the Houtman Abrolhos Islands and Lord Howe Islands. In short: the Indo-Pacific. They typically inhabit shallow reefs and upper reef slopes at depths between 20 to 115 feet (6–25 m).

The growth form of bird’s nest coral is shaped by water flow: stronger currents produce thicker branches, while colonies collected from deeper or calmer waters tend to have thinner stalks. Colonies can reach 1–1.5 feet (0.3–0.5 m) in size, with branches that may be blunt or needle-like. Coloration varies widely, including brown, orange, pink, green, yellow, purple, or combinations thereof.

Bird’s nest corals also have a fascinating relationship with certain crabs, such as the female gall-forming Hapalocarcinus marsupialis. The crab shapes the coral’s branches into a cage where it lives permanently, with just enough space for the smaller male crab to enter and mate. While this is a remarkable detail for divers and snorkelers, it’s not practical to introduce these crabs into a captive environment. Still, it’s a fun fact to share with visitors admiring your reef tank.

Placement of Bird’s Nest Corals in a Reef Tank

You only want to keep the bird’s nest coral in a mature reef tank that is at least six months old for best results. And, if you can muster the patience, 1.5 years old is best. You don’t want to attempt to introduce them to a new saltwater aquarium. They’re too fragile for that.

Lighting

Bright light produces the fastest growth, but the coral may not do well with intense light if it was living at a lower depth when it was collected. The genetic makeup influences its lighting tolerance. For instance, the yellow bird’s nest tolerates moderate lighting conditions. But the pink variety? It suffers if it doesn’t receive intense lighting. Getting the lighting right is crucial if you want this coral to thrive. Otherwise, you’ll end up with a sick and bleached coral—even with all the care and nurturing in the world.

The best practice is to gradually acclimate your new specimen to the light in your tank. Decrease the initial light intensity to about 50% and increase it moderately over time to the desired intensity. You can also work by moving the coral to various depths within the tank. Start at the bottom and watch to see how the coral looks. Then start to move it up over a few days, waiting to see if the colors bleach.

Why gradual acclimation is critical: Bird’s nest corals, like other SPS, host symbiotic zooxanthellae algae within their tissues. These algae are responsible for most of the coral’s energy production via photosynthesis. When light intensity changes rapidly, the zooxanthellae and the coral’s own tissues can become stressed. Sudden increases in light can cause the zooxanthellae to produce excess oxygen radicals, leading to bleaching (expulsion of zooxanthellae), tissue loss, or even death. Conversely, insufficient light can starve the coral, leading to pale coloration and poor growth. Gradual acclimation allows both the coral and its symbionts to adjust their physiology to new light conditions, minimizing stress and maximizing health.

Diagnostic checklist for lighting stress:

• Early signs of excessive lighting: Faded or bleached coloration, tissue recession (especially on upper surfaces), reduced or absent polyp extension, sudden loss of fluorescence, or visible stress bands.
• Early signs of insufficient lighting: Dull or brownish coloration, slow or halted growth, extended polyps (reaching for light), and increased algae growth on the skeleton.
• Other indicators: If you notice tissue loss starting from the tips (often from too much light) or from the base (sometimes from too little light or shading), adjust accordingly.

Decision framework for light acclimation:

• Start with reduced intensity or lower placement; observe for 3–7 days.
• If color remains stable and polyps are extended, gradually increase intensity or raise placement.
• If any bleaching or tissue loss occurs, reduce intensity immediately and allow recovery before further changes.
• If coral appears brown or growth is poor, consider increasing light incrementally, monitoring for improvement.

Any time you see a loss of color, that’s bleaching, and it means your light intensity is too high. Either turn things down or shift your bird’s nest a step back toward the bottom. It’s trial and error, and it takes time, but it’s the best way to manage lighting for this species.

Water Flow

Wouldn’t it be nice if bird’s nest corals made things simple in regards to their placement? No such luck—even with their flow choices. You need to look at a few different aspects to decide what kind of current to stick with. And the first (and easiest) is the thickness of their branches. A broad, thick coral branch can withstand a higher water flow without too much trouble. The corals DO exist in turbid regions on reefs throughout their natural habitat. And the stony skeletons can handle the extra current.

But when those branches are thin, you need to dial things back into the moderate range. If the flow goes too high, your bird’s nest won’t open its polyps. That means it will slowly starve to death. If you’re not sure about the branch size, start at the moderate level and see how your bird’s nest coral grows. You can always increase the water flow over time.

Why water flow matters: Moderate to high, but not excessive, flow is essential for bird’s nest corals. Proper flow delivers nutrients and oxygen, removes waste products, and prevents detritus from settling on the coral’s branches and base. It also supports effective gas exchange and helps keep the coral’s surface clean, reducing the risk of localized algae or bacterial growth. Too little flow can lead to detritus accumulation, tissue recession, and increased susceptibility to disease. Too much flow can cause tissue damage, inhibit polyp extension, and even break fragile branches.

Troubleshooting flow-related issues:

• Signs of excessive flow: Polyps remain retracted, tissue recession on the side facing the pump, or visible tissue sloughing. Branches may break if the flow is too strong.
• Signs of insufficient flow: Detritus or algae buildup at the base or between branches, uneven polyp extension (polyps only open on one side), or tissue recession at the base.
• Localized tissue loss: If tissue recedes only on one side, adjust the direction or intensity of the flow to create more even movement around the coral.

Practical heuristics for adjusting flow:

• Observe polyp extension: healthy corals will have polyps extended in moderate, turbulent flow.
• If detritus accumulates, increase flow or adjust direction.
• If tissue recession or polyp retraction occurs, reduce flow or redirect to avoid direct blasting.
• Use alternating or randomized flow patterns (e.g., with wavemakers) to mimic natural reef conditions and prevent dead spots.

Because if you start seeing hair algae show up? That’s a signal your current’s too slow.

“No Pushing!”

While the bird’s nest coral can tolerate other corals, it’s important that it does NOT touch other corals. This is really a best practice for all coral species (although some Euphyllia corals can touch without problems). But if your corals are even close to touching one another? You’re probably doing it wrong. (No offense)

One thing that requires significant self-restraint in this hobby is placing your corals far enough apart. You need room to allow them to grow into a reasonable colony size—without encroaching too much on neighboring corals. (Remember, “No touchee!”) Try to think a few years in advance when placing your corals.

Water Parameters

Bird’s nest corals need stable reef-quality water parameters to grow successfully. That is best achieved by mixing RO/DI water with a high-quality reef aquarium salt mix. You want your aquarium to maintain the following levels:

• Alk: 8–12 dkh
• pH: 8.2–8.4
• Temperature: ~78–82°F (25.5–27.7°C)
• Salinity: 1.025 specific gravity
• Calcium: 400 ppm
• Ammonia, Nitrites, Nitrates, Phosphates, Silicates: 0 ppm

Why stability matters: For SPS corals like bird’s nest, stability is more important than hitting exact numbers. Rapid swings in alkalinity, temperature, or salinity can cause tissue loss, bleaching, or even colony death. Minor deviations from the “ideal” are usually tolerated if changes occur gradually and parameters remain within reasonable bounds. Chasing perfect numbers with frequent adjustments can actually destabilize your system and stress your corals.

Operational consequences of parameter deviations:

• Low alkalinity: Poor skeletal growth, increased risk of tissue loss.
• High alkalinity: Precipitation of calcium, possible burnt tips.
• Low calcium: Slow or halted growth.
• High nutrients (nitrate, phosphate): Algae outbreaks, reduced coloration.
• Low temperature: Slowed metabolism, increased disease risk.
• High temperature: Increased risk of bleaching and tissue loss.

Best practice: Monitor trends over time and prioritize stability. Intervene only when parameters drift outside the safe range or show a consistent trend in the wrong direction. Avoid overreacting to minor, short-term fluctuations.

And, as you probably guessed (needing a mature tank), you want to stay on top of your cleaning regime. Dirty tanks lead to diseases.

Feeding Bird’s Nest coral

Bird’s nest coral can survive on its own without feeding. The zooxanthellae algae that live inside it will provide nourishment via photosynthesis. And that’s where they receive the majority of their nutrients. But corals are animals, and all animals need to eat.

Extended polyps from the stony branches capture and remove appropriately sized food particles (like plankton). Your bird’s nest will do this to pick up dropped food from the fish in your tank. But you can also target feed your coral to make sure they’re receiving the proper nutrition.

For best results, start by GENTLY shooting a small amount of food in the direction of your coral. A lot of times, this will initiate a feeding response. You’ll see the coral extend its polyps in search of a meal. Turn off the water flow pumps (many pumps, like gyre models, have a feeding button that pauses the water flow for 10 minutes to allow these kinds of feedings) and target feed them using a turkey baster, syringe, or Julian’s thing.

Trade-offs of supplemental feeding: Regular feeding can enhance coloration and accelerate growth, as the coral receives additional nutrients beyond what photosynthesis provides. However, overfeeding can lead to spikes in nitrate and phosphate, fueling nuisance algae or pest outbreaks. Underfeeding may limit growth or result in paler coloration, especially in tanks with low nutrient levels.

Practical feeding guidance:

• Start with small, infrequent feedings (1–2 times per week) and observe coral response.
• Monitor nutrient levels (nitrate, phosphate) and algae growth. If nutrients rise or algae increases, reduce feeding frequency or quantity.
• If the coral shows strong polyp extension and vibrant coloration, your feeding regimen is likely appropriate.
• Adjust feeding based on observed tank conditions and coral health, balancing growth and coloration with overall tank stability.

Bird’s Nest Coral Compatibility

The bird’s nest coral is not an overly aggressive aquarium coral—at least to other Seriatopora corals. Even with other species, it doesn’t have a lethal arsenal at its disposal to wage war. That means you don’t have to worry much about it leaking toxins into the water that can kill its neighbors or stinging sweeper tentacles, like you have to worry with some of the LPS corals, like Acans, Favia, Blastomussa, and even Hammer, Torch and Frogspawn corals.

It is fairly fast-growing (by SPS coral standards), so the most important thing is to give plenty of room for it and its neighbors to grow. Otherwise, you can see those branches shoving neighbors out of the way. (You know, that passive-aggressive issue)

Passive aggression and operational consequences: While bird’s nest coral is peaceful in terms of chemical warfare, its rapid growth can cause problems for neighboring corals through shading, physical overgrowth, or even toppling less robust species. As colonies mature, they can block light from slower-growing corals beneath or physically displace neighbors by expanding their branches.

Practical advice for managing growth:

• Plan coral placement with future growth in mind, leaving extra space between colonies.
• Monitor for shading or encroachment as colonies expand, especially in mixed SPS/LPS tanks.
• Be prepared to prune or frag the bird’s nest periodically to maintain open space and prevent overgrowth issues.
• Consider the growth rates of neighboring corals when planning your aquascape.

Reproduction and Fragging

The bird’s nest coral can reproduce sexually or asexually, though sexual reproduction for any coral is rare in captivity. But corals reproduce asexually by fragmentation and breakage, which is something the bird’s nest excels at. The thin branches break easily when bumped or moved around the tank. (This isn’t permission, by the way)

You can propagate your bird’s nest coral by fragmentation. Look for a healthy section of the coral and cut off a branch around 2 inches (5 cm) in length. You’re going to see “slime” along the cut surface. This is normal, but you don’t want the slime to touch any of the other corals in your tank. Glue the frag to a rock or reef plug, making sure it’s glued on its side. This promotes faster growth and provides plenty of water flow.

Want to learn more about fragging and coral reproduction? It happens that I have a handy guide all about the subject!

Troubleshooting fragging problems:

• Frag detachment: Ensure the frag is securely glued and placed in an area with moderate flow to promote healing but not so much that it is dislodged.
• Tissue loss or necrosis: Can result from poor water quality, excessive handling, or insufficient flow. Maintain stable parameters and minimize handling time.
• Infection: If you notice tissue sloughing or discoloration at the cut site, consider an iodine dip and improve water quality and flow.
• Poor healing or slow growth: May be due to low light, insufficient flow, or unstable parameters. Adjust placement and monitor closely.

Tips for maximizing frag survival:

• Use clean, sharp tools and handle frags gently.
• Place frags in stable, moderate-flow areas with appropriate lighting.
• Monitor for signs of stress or infection in the first week and intervene early if needed.
• Acclimate frags to tank conditions gradually, especially if coming from a different lighting or flow environment.

For More Information

Now that you’ve gotten your interest piqued for bird’s nest corals, why not dive into some more information about them?

Start here with a handy YouTube video about these gorgeous SPS corals:

Or maybe you’re interested in another SPS coral you could add to your reef tank? Why not look at the montipora coral as your next inspiration?

Maybe you want to go in a different direction completely and start investigating large polyp stony (LPS) corals. No problem—got you covered there, too:

• Acan coral
• Candy cane coral
• Duncan coral
• Elegance coral
• Flower pot coral
• Scoly coral
• Sun coral
• Toadstool coral
• Torch coral
• Trumpet coral

Conclusions

The bird’s nest coral is sometimes considered a gateway SPS coral. It’s the coral most commonly turned to first when an aquarium owner wants to try growing SPS in their tank. And even though it’s one of the least demanding SPS corals, it requires an intermediate level of care to be successful.

It is simple to grow from a small broken branch or frag. And this coral will tolerate minor fluctuations in water parameters. It’s also a hardy, fast-growing species. That makes it appealing to people who can support its tricky lighting and flow needs. But if you take the time to carefully transport and gently acclimate your bird’s nest, you’ll find it “blossoming” within your reef tank. Just make sure you provide sufficient lighting, maintain solid water quality and feed this amazing creature. And you’ll be amazed to see how quickly the thin branches grow and fill in space in your tank.

References

• Borneman, Eric H. Aquarium Corals. Microcosm Ltd; 1st Printing Edition (March 1, 2001)
• Ulrich III, Albert B. How to Frag Corals: Step-by-Step Guide to Coral Propagation and Filling Your Frag Tank With Thriving Polyps.

What’s Your Experience?

Have you tried to keep Seriatopora hystrix? If so, please share your experiences in a comment below. What advice would you give?