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Anthelia is one of the easiest soft corals to propagate in a reef aquarium. Its soft, flexible tissue makes it remarkably simple to divide, trim, and establish new colonies without the specialized tools required to frag many stony corals.
Waving Hand Anthelia is particularly popular among reefkeepers for its long, feathery polyps that constantly sway in the current. It can add a lot of movement to an aquarium, but that impressive growth can come with a downside: Anthelia can spread quickly when given access to surrounding rockwork.
That makes Anthelia an interesting coral to propagate. The same characteristics that make it easy to frag can also make it difficult to control, similar to Green Star Polyp (GSP), xenia, and Kenya tree corals.
The goal isn't necessarily to prevent an aggressive coral from growing, but to control where it is able to grow. With a little planning, Anthelia can be kept as a beautiful, productive colony without allowing it to take over the rest of your aquascape.
Anthelia is a soft coral that grows as colonies of individual polyps connected by a fleshy basal tissue. Unlike stony corals such as Duncan or Acropora, Anthelia does not build a rigid calcium carbonate skeleton, which makes propagation relatively straightforward.
Instead of cutting through a hard skeleton, you're working with soft coral tissue that can be divided into smaller sections and encouraged to establish on new substrate.
Waving Hand Anthelia is one of the most recognizable forms of Anthelia. Its individual polyps extend upward from the colony and move continuously in the current, creating the characteristic "waving hand" appearance. Healthy colonies can develop quickly under favorable aquarium conditions, spreading outward across their available substrate with impressive adaptability.
Anthelia is also sometimes confused with Xenia because both can form colonies of tall, pulsing or waving soft coral polyps that grow quickly. While they may look similar at a glance, they are distinct corals with different coral growth habits and appearances.
For the reefkeeper, one characteristic matters more than anything else when deciding how to place Anthelia: it can grow quickly.
Anthelia doesn't have a hard skeleton that needs to be cut through. Instead, its colony consists primarily of soft tissue and a spreading basal structure.
This means a healthy colony can often be propagated by:
Separating a section from the colony
Cutting through the soft tissue
Peeling a section away from its substrate
Using naturally detached pieces
Allowing small sections to establish on new substrate
In other words, Anthelia doesn't need much encouragement to become a new colony. That is fantastic when you're intentionally propagating coral. It can be considerably less fantastic when a piece lands on a rock where you never intended Anthelia to grow. This makes it important to decide where you want Anthelia to grow and consider isolating it an inch or two away from other rocks.
Before cutting a healthy Anthelia colony, ask yourself a slightly different question: where do I want this coral to be allowed to grow?
This is particularly important with fast-growing soft corals. It is easy to think of fragging as simply creating more coral, but propagation also gives you an opportunity to control the footprint of an aggressive colony. If you already know that you want to keep your Anthelia contained, consider giving it its own piece of removable substrate from the beginning.
One of the simplest ways to control Anthelia is to place it on a rock that is physically separated from your main aquascape. Rather than allowing the colony to grow directly onto your primary rockwork, give it a dedicated rock or island with open space around it. This creates a physical boundary between the Anthelia colony and the rest of your aquarium.
You can then:
Allow the colony to grow.
Trim it periodically.
Remove excess growth.
Take frags from the colony as needed.
Keep the remaining colony confined to its designated rock.
This approach doesn't stop Anthelia from growing. It gives that growth somewhere safe and desirable to go. This provides a much more sustainable strategy than constantly fighting a colony that has already established itself throughout your aquascape.
Isolation doesn't have to be permanent. If an Anthelia colony starts becoming difficult to manage, you can move the colony onto an isolated piece of rock and give it a little "time-out."
Think of the process like this:
Healthy Anthelia → isolated rock → controlled growth → periodic trimming → excess growth becomes frags → repeat
If the colony begins expanding beyond the footprint you want, remove the rock from the aquarium when practical and trim it outside the display. You can remove unwanted portions, keep the healthy colony you want, and return the controlled rock to the aquarium.
A coral doesn't necessarily have to be permanently removed from your display simply because it grows aggressively. Sometimes it just needs a place where it can grow without being given access to the rest of the aquascape. This concept of containment through removable substrate can be useful for many fast-growing corals, not just Anthelia.
Anthelia doesn't require much equipment to propagate.
You will need:
Sharp scissors, a scalpel, and/or razor blade
Tweezers or forceps
A container of aquarium water
Frag plugs, frag rocks, or frag discs
Reef-safe cyanoacrylate gel
A frag tray or other container for keeping loose pieces contained
An acclimation box is optional for more controlled attachment environment
No, coral cutters are designed primarily for dealing with the hard skeletons of stony corals. Anthelia has no rigid skeleton to cut through, so a sharp blade or scissors is generally more appropriate. The most important thing is to use a clean, sharp tool that can make a controlled cut without unnecessarily crushing or tearing the coral.
Prepare everything before you disturb the colony. Fill a small container with aquarium water and place your tools, frag plugs, and other materials within easy reach. If you're working with an established colony, consider whether you can remove its rock from the aquarium before trimming it.
Working over a container can make it much easier to collect loose pieces and prevent unwanted fragments from finding their way into your display. The less time the coral spends being handled, the better.
Start with a healthy, established portion of the colony.
Look for:
Healthy coloration
Good polyp extension
Firmly established tissue
Active growth
No obvious tissue damage or deterioration
Avoid taking frags from a colony that is already struggling. Fragging is best used as a method of propagation and maintenance, not as a substitute for addressing the underlying cause of an unhealthy coral.
There are several ways to create an Anthelia frag, and the best method depends on how the colony is growing.
Method 1: Peel a Section From the Substrate
If the colony is growing across a removable rock or other relatively smooth surface, you may be able to gently work underneath the colony and separate a section from its base. With part of the colony gently peeled away from the substrate, it can be easier to cut a section off for mounting. This can be particularly useful when you're maintaining an established colony and simply want to reduce its footprint. Work slowly and avoid unnecessarily damaging the surrounding tissue.
Method 2: Cut a Section From the Colony
When peeling isn't practical, use a sharp blade or scissors to separate a manageable section of the colony. Try to take a healthy piece with multiple established polyps rather than creating an unnecessarily tiny fragment. The goal is to create a viable frag that can recover quickly, not to create as many pieces as physically possible.
Method 3: Use Naturally Detached Pieces
Sometimes Anthelia does the work for you. If a healthy section of the colony has naturally detached, you may already have a perfectly usable frag. Rather than allowing a loose piece to drift around your aquarium, collect it and give it an intentional place to establish. This is one of the reasons Anthelia can be such an easy coral to propagate—and such an easy coral to accidentally spread.
Anthelia does not require a large piece of colony to establish. A section containing multiple healthy polyps can provide a good starting point for a new colony, while larger pieces may establish more quickly. There is little benefit to creating dozens of tiny fragments simply because you can.
In fact, creating excessive numbers of small pieces can make containment more difficult. Every loose fragment is another opportunity for Anthelia to establish somewhere you didn't intend, and smaller frags tend to recover more slowly. When propagating Anthelia, make the number of frags you actually want.
Once you've separated your frag, the next step is keeping it in the location where you want it to establish.
Cyanoacrylate gel can be used to attach Anthelia to a frag plug with patience and technique.
Start by drying the upper surface of the plug. Apply a small amount of reef-safe cyanoacrylate gel to the area where the base of the frag will sit. Place the basal portion of the Anthelia against the adhesive and hold it in place briefly before returning it to aquarium water.
Avoid covering a large amount of living tissue with adhesive. The goal is to secure the base rather than glue the entire coral to the plug. Remember that the coral frag will likely contract after fragging, so try not to press the frag base into the glue too firmly.
Glue isn't always necessary. Another option is to place the Anthelia frag against a frag plug, rubble, or another suitable substrate and allow it to attach naturally. A frag tray, acclimation box, or small container can be especially useful for this method because it prevents the frag from drifting away while it establishes.
The important part isn't necessarily how the coral is attached. The important part is keeping the frag where you want it until it establishes.
For fast-growing Anthelia, propagation and containment should be considered together. If you simply place Anthelia on your main aquascape, you're giving the colony access to every neighboring surface it can reach. Instead, consider treating the coral's substrate as part of your containment strategy.
The concept is simple: put Anthelia on its own rock. Keep that rock separated from the primary aquascape by enough open space that the colony cannot easily grow directly onto neighboring structures.
Then:
Let the colony grow.
Monitor its footprint.
Trim it before it reaches neighboring rockwork.
Remove excess growth.
Propagate the pieces you want.
Keep the remaining colony on its isolated rock.
The advantage is that you've turned an aggressive coral into a removable, manageable colony. Instead of permanently attaching the coral to a rock that you can't easily remove, you're giving it a designated place where you can manage its growth outside the display when necessary.
Imagine an Anthelia colony growing across three pieces of rock that are touching:
Rock A → Rock B → Rock C
There is nothing stopping the colony from continuing to expand across those connected surfaces.
Now compare that with:
Anthelia Rock → open space → Main Aquascape
You've created a physical boundary. The Anthelia can still grow aggressively. It can still spread across its own rock. It can still produce loose pieces.
However, its easiest path of expansion has been removed. Isolation doesn't stop growth, it just controls access.
This strategy can also be used after a coral has already become difficult to manage.
If an Anthelia colony has expanded beyond where you want it, consider moving the colony onto a dedicated piece of removable rock. In other words, isolate your Anthelia colony in hindsight.
From there, you can trim it periodically without having to repeatedly scrape it from permanent rockwork. The key, recurring principle here is that healthy Anthelia in stable parameters will grow abundantly, so prepare your rockwork accordingly. Containment through removable substrate turns an aggressive coral from a permanent problem into a manageable maintenance task.
This is a recovering brain coral frag. This brain coral frag used to be on a frag tray near an Anthelia colony that outgrew its rock and spread up part of the glass. Through this process, the Anthelia colony also came into contact range with the brain coral frag. The tentacles of the polyp heads of the Anthelia colony damaged tissue on the brain coral frag, emphasizing the importance of proper coral care and propagation knowledge. This damage can be prevented by ensuring your Anthelia cannot grow outside of the section in which you want it to grow.
Isolation is the first line of defense, but it isn't the only consideration.
Leave a reasonable buffer between an Anthelia colony and neighboring rock. Once the colony physically reaches another piece of rock, you've made it much easier for the coral to expand into that structure. Trim the colony before it reaches the boundary of its designated area.
Keep an eye out for loose pieces of Anthelia that have separated from the main colony. Don't assume a detached piece will simply disappear. If it lands somewhere with suitable conditions, it may establish a new colony. Collect unwanted fragments whenever possible.
If your Anthelia is growing on removable rock, one of the easiest ways to control it is to remove that rock from the aquarium before trimming. Perform the trimming over a container rather than directly over your display. This makes it much easier to collect the pieces you're removing and dramatically reduces the chance of accidentally introducing loose fragments elsewhere in your aquarium.
Even with an isolated colony, occasionally inspect the surrounding rockwork and substrate. Look for small pieces that may have detached and established outside the intended colony. The earlier you find an unwanted colony, the easier it is to remove.
Don't necessarily wait until Anthelia has already become a problem. Regular maintenance can be much easier than trying to remove an established colony from permanent rockwork.
Consider trimming when:
The colony is approaching neighboring rockwork
Its footprint has become larger than you want
Individual sections are growing beyond the designated area
You have more colony growth than you need
You want to create new frags
If the colony is growing on removable substrate, periodic maintenance can be as simple as removing the rock, trimming the excess growth, and returning the controlled colony to the aquarium. Prevention is dramatically easier than eradication.
If you know the coral can spread aggressively, think about containment before you mount it.
Give the coral somewhere to grow without immediately giving it access to another rock.
Loose pieces can become new colonies. If containment is important, trim over a container whenever practical.
You don't have to turn every trimming session into a production line. Make the number of frags you actually want and dispose of unwanted material responsibly.
A tiny piece is much easier to remove than an established colony. Remove any frags that may cause problems for other corals in the ecosystem later.
Regular trimming is easier than trying to remove an aggressive soft coral after it has become intertwined with the rest of your aquascape.
Isolation reduces the opportunity for spread. It does not make the coral incapable of spreading. Loose fragments can still travel, and colonies can still expand beyond their intended footprint if they are allowed to contact surrounding structures. Think of isolation as a containment strategy, not a guarantee.
Once your frag is secured, the best thing you can usually do is give it time to establish. Maintain stable aquarium conditions and provide appropriate lighting and flow for the coral's normal placement. Avoid repeatedly moving or handling the frag to check whether it has attached.
If you've used a glue or natural attachment method, give the coral time to establish itself before deciding that something isn't working. A newly fragged piece may take some time to settle in, but healthy Anthelia can be remarkably resilient once established.
Anthelia is one of the easiest corals to propagate, but its rapid growth means a little planning can go a long way. By giving aggressive colonies their own isolated space, trimming them regularly, and using removable substrate when possible, you can enjoy the movement and growth of Anthelia without letting it take over your aquascape. With the right approach, coral fragging isn't just about making more coral—it’s about maintaining a healthy colony and keeping its growth exactly where you want it.
76–80°F (24.5–27°C)
Stable temperature reduces stress and supports normal metabolism during recovery. Avoid sudden temperature changes.
1.025–1.026 SG (35 ppt)
Maintaining natural seawater salinity promotes healthy tissue repair and minimizes osmotic stress after fragging.
7-10 dKH
Anthelia does not build a calcium carbonate skeleton, so alkalinity is less critical than it is for LPS and SPS corals. Stable alkalinity still contributes to overall reef stability during recovery.
380–450 ppm
Anthelia has relatively low calcium demands compared with stony corals, but maintaining adequate calcium supports balanced reef chemistry and overall aquarium stability.
1250–1400 ppm
Magnesium helps maintain balanced calcium and alkalinity while supporting stable reef chemistry.
2–20 ppm
Anthelia generally benefits from measurable nitrate and can grow rapidly when nutrients are available. Avoid nutrient depletion while freshly fragged tissue is recovering.
50-150 PAR (species/colony dependent)
Anthelia generally performs well under low to moderate light. Avoid sudden increases in light intensity after fragging while the colony recovers.
0.03–0.15 ppm
Maintaining measurable phosphate supports normal coral metabolism and growth without requiring an ultra-low-nutrient environment.
Moderate, indirect to moderate
Moderate, varied flow helps deliver oxygen and nutrients while removing waste and detritus from freshly cut tissue. Avoid strong, direct flow that can prevent newly fragged Anthelia from attaching securely.
Anthelia can be propagated by separating, cutting, or peeling a healthy section of the colony and attaching it to a new substrate such as a frag plug or piece of rubble.
Waving Hand Anthelia can be fragged by separating a healthy section of the colony from its substrate or cutting a section containing several healthy polyps. The resulting piece can then be manually attached to a frag plug or allowed to attach naturally.
Sometimes. If the colony has established across a suitable substrate, a section may be gently separated from the underlying surface. The ease of doing this depends on how firmly the colony has attached.
In some cases it may be easier to cut polyps at their bases near the basal foot if they are extremely grown into rockwork. This method can result in slower healing, but can be successful if completed carefully to minimize stress.
Anthelia can be secured to a frag plug using a small amount of reef-safe cyanoacrylate gel, or it can be placed against the plug and allowed to attach naturally in a controlled environment such as an acclimation box or frag basket.
Anthelia can grow rapidly under favorable aquarium conditions, but the exact growth rate varies between aquariums. Established colonies can expand across available substrate and may also spread through detached pieces.
If conditions are favorable and there is no other available substrate, anthelia colonies have been known to spread onto glass, aquarium equipment, and bridge small gaps across sand to reach new substrate.
The best strategy is to control where the coral has access to grow. Keeping Anthelia on an isolated, removable rock with open space around it allows you to trim the colony before it reaches your primary aquascape.
In a reef aquarium, "invasive" generally refers to a coral that spreads aggressively enough to become difficult to control. Waving Hand Anthelia can behave this way when allowed to spread across connected rockwork, so careful placement and regular trimming are important.
It can be a very effective strategy, particularly if you want to enjoy Anthelia without allowing it to spread throughout your main aquascape. An isolated rock also makes routine trimming and removal much easier.
Yes. Healthy sections of Anthelia can establish and grow into new colonies, which is one of the reasons it is so easy to propagate.
Give it a defined area to grow, preferably on removable substrate, maintain a buffer between the colony and surrounding rockwork, and trim it regularly before it reaches areas where you don't want it. The easiest Anthelia colony to remove is the one you never allowed to attach to your permanent aquascape in the first place.
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