© Akram AB / CC BY-SA 4.0Isis Hippuris
The Isis Hippuris, commonly known as sekkoku yagi, is an octocoral whose skeleton alternates between rigid, calcareous joints and flexible, gorgonin-based ones, giving it a distinctive bamboo-like structure. As a photosynthetic species hosting zooxanthellae, it takes in plenty of light as it grows, and it's found widely across the western Pacific near Indonesia, where it reproduces readily through asexual growth. Its supple branches sway gracefully with the current, adding movement and depth to any reef layout, and the contrast between hard and flexible segments gives it a texture unlike other corals, letting it stand out as a centerpiece. Because it's considered suitable for intermediate keepers, it's best to have your tank conditions well established before bringing one home.
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Isis Hippuris key facts
- Care level
- Intermediate
- Temperature
- 24〜27℃
- Diet
- Photosynthesis via zooxanthellae plus supplemental zooplankton and phytoplankton
- Lighting
- A photosynthetic species; provide moderate or stronger lighting.
- Flow & Placement
- Give strong random flow and keep sediment from collecting between the joints.
- Water Temperature & Quality
- Hold 24-27 C and 1.022-1.025 specific gravity steadily.
- Feeding
- Photosynthesis is its main source, but supplemental phytoplankton and fine zooplankton help.
- Notes
- Exposed calcareous internodes indicate tissue recession; review flow and light.
About Isis Hippuris
Isis Hippuris is a bamboo-like octocoral with alternating calcareous and flexible joints, hosting zooxanthellae and widespread across the western Pacific. Suited to intermediate keepers, it's prized for its graceful, swaying branches.
7 things to know before welcoming a Isis Hippuris
1Needs Strong Light
As a photosynthetic species hosting zooxanthellae, this coral relies on solid lighting to thrive. Insufficient light disrupts the nutrient supply from its symbiotic algae, causing it to gradually decline. Place it in a well-lit upper-to-mid tank position.
2Prefers Moderate Flow
With its bamboo-like branches, it benefits from water movement that helps deliver nutrients. Flow that's too strong can damage its tissue, while stagnant areas invite debris buildup. Adjust your pump placement to find a gentle, steady current.
3Alternating Hard and Soft Joints
Its skeleton alternates between rigid calcareous segments and flexible gorgonin ones, a structure unique among corals. This combination lets it sway with the current while staying resistant to breakage. Avoid gripping the joints tightly when handling or relocating it.
4Stable Water Quality Matters
As a species suited to intermediate keepers, it can be sensitive to sudden shifts in water parameters. It settles in better in an established, mature tank rather than a newly cycled one. Consistent water changes and parameter monitoring go a long way toward keeping it healthy.
5Spreads via Asexual Growth
In the wild, this species multiplies through asexual reproduction, branching and dividing to expand its colony when conditions are favorable. Hobbyists can propagate it by cutting off healthy sections. Use clean tools and care for the cut ends to prevent infection.
6Give It Room to Grow
Its branches extend outward and upward over time, so place it where it won't crowd neighboring corals or equipment. Since its shape changes as it grows, periodically revisit your layout to accommodate it.
7Prepare Your Tank First
Given its photosynthetic nature and intermediate difficulty level, it's best introduced once lighting, flow, and water quality are all well established. As with any new arrival, follow a proper acclimation and quarantine process before adding it to the display tank.
Frequently asked questions about Isis Hippuris
- Q.Is this coral suitable for beginners?
- A.It's generally considered suitable for intermediate keepers, so some experience with tank cycling and basic water quality management is helpful. It's best attempted once you're comfortable adjusting lighting and flow.
- Q.How much lighting does it need?
- A.Since it hosts zooxanthellae and is photosynthetic, it needs solid, reliable lighting. Place it in an upper-to-mid tank position where light reaches easily.
- Q.Can it be kept with other corals?
- A.Yes — since its branches extend outward and upward, giving it enough clearance lets it coexist well with other corals in the same tank. Adjust your layout as it grows to keep enough space around it.
- Q.Can it be propagated?
- A.In the wild it multiplies through asexual reproduction, and hobbyists can propagate it by cutting off branching sections. Use clean tools and care for the cut ends afterward to prevent infection.
- Q.Is this species regulated under CITES?
- A.Isis Hippuris is not listed under CITES.
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