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Lemnalia© Bernard DUPONT from FRANCE / CC BY-SA 2.0

Lemnalia

Lemnalia is a brown soft coral that branches out from a slender trunk like a small tree, with polyps dotted sparsely along the tips of its branches. Its swaying form in the current adds a graceful, three-dimensional presence to a reef tank. The base spreads over rock as it settles in, forming a stable foothold once established. It thrives best where water movement is strong, so flow placement matters when choosing its spot. Because it releases chemical compounds that can suppress neighboring corals, it's best kept with some distance from other species. Considered suitable for intermediate keepers, it's a good fit for those already comfortable with basic water quality management.

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Lemnalia key facts

Care level
Intermediate
Temperature
24〜26℃
Diet
Mainly nutrition from its zooxanthellae; feeding micro-plankton or baby brine shrimp speeds growth.
Lighting
LiveAquaria lists tree corals as needing moderate to high light; in low light the branches stretch out thin.
Flow & Placement
LiveAquaria gives placement as middle and flow as medium to strong, and notes a preference for a coarse gravel substrate. It releases toxins, so keep it away from other corals.
Water Temperature & Quality
Water 24-26C, specific gravity 1.023-1.025 (salinity 33-35 ppt), pH 8.1-8.4, KH 8-12. Iodine, strontium and trace elements are recommended.
Feeding
Most of its nutrition comes from photosynthesis. Micro-plankton, baby brine shrimp or foods for filter-feeding invertebrates can be offered as a supplement.
Notes
It releases toxins that suppress neighbouring corals, so give it space and run activated carbon. It suits a mature tank rather than a newly established one. Having no stony skeleton, it is not covered by the CITES coral listings.
TraitsSoft coralTree-likeAggressiveReleases toxins

About Lemnalia

A brown soft coral with tree-like branching and sparse polyps at the branch tips. It favors strong water flow and releases compounds that can suppress nearby corals, making placement important for this intermediate-level species.

7 things to know before welcoming a Lemnalia

  1. 1Needs Strong Water Flow

    Lemnalia thrives in areas with strong water movement. Placing it in a low-flow spot can affect how well its branches open and its overall condition, so consider pump placement and flow direction carefully.

  2. 2Mostly Feeds via Photosynthesis

    Its brown coloration comes from the zooxanthellae living inside its tissue, which provide most of its nutrition through photosynthesis. This means less need for direct feeding, though adequate lighting is still important for healthy coloration.

  3. 3Keep Distance from Other Corals

    Lemnalia releases chemical substances that can suppress the growth of nearby corals. When aquascaping, leave enough space so it doesn't come into direct contact with other coral colonies.

  4. 4Attaching It to Rock

    The base spreads across the rock surface as it settles in. Right after introduction, secure it firmly with coral glue or by wedging it into a crevice in the live rock so it isn't dislodged by the current.

  5. 5Watch Polyp Behavior

    Polyp opening and closing often reflects changes in water quality or flow, making it a useful daily health check. If the polyps stay closed for an extended period, it may be worth reviewing water parameters or placement.

  6. 6Best Suited for Intermediate Keepers

    This species is generally considered suitable for intermediate keepers. Having some prior experience with water quality management and flow adjustment will make it easier to keep successfully.

  7. 7Handle Branches with Care

    The tree-like branches are relatively delicate and can snap if handled roughly during tank maintenance. Be careful that tools or your hands don't bump into them when rearranging the aquascape or cleaning algae.

Frequently asked questions about Lemnalia

Q.Can beginners keep Lemnalia?
A.Lemnalia is generally considered suitable for intermediate keepers rather than complete beginners. If you're already comfortable managing water quality and flow, it should be manageable to care for.
Q.Can it be kept alongside other corals?
A.Lemnalia releases chemical compounds that can suppress the growth of neighboring corals, so it's best not to place it right next to other species. Leave adequate spacing between it and other corals in your layout.
Q.How much water flow does it need?
A.Lemnalia prefers strong, well-circulated water movement. Choose a spot in the tank with good flow and adjust pump direction as needed to keep water moving around it.
Q.Does it need to be fed?
A.It gets most of its nutrition from photosynthesis via the zooxanthellae in its tissue, so direct feeding isn't a major requirement. Paying attention to lighting levels for healthy coloration matters more.
Q.Does it mean something's wrong if the polyps stay closed?
A.Polyps closing up is often just a temporary response to changes in water quality or flow, not necessarily a sign of a problem. That said, if they stay closed for a long stretch, it's worth reviewing water parameters or placement.

Useful tools for Lemnalia care

Learn more about Lemnalia in the encyclopedia

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Care difficulty, lifespan, size and diet — all basics covered.

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