
Hydnophora (Horn Coral)
Hydnophora, commonly known as Horn Coral, is a striking species whose surface is covered in small nodule-like projections called hydnophores, giving it a texture that sits somewhere between LPS and SPS corals. Its vivid fluorescent green coloring makes it a real standout in any tank, and its relatively fast growth rate means keepers can watch it develop over time. That said, Hydnophora is notably aggressive toward neighboring corals, and contact between colonies can cause damage, so careful spacing within the aquascape is essential. Considered suitable for intermediate keepers, it rewards a bit of experience with water quality and lighting with a coral that can thrive for many years.
View Hydnophora (Horn Coral) encyclopedia →0% commission on your first sales!Register by September 30, 2026 and your first 2 sales are commission-free!
Breeder Wanted!
List on BreederDirect and sell directly to customers nationwide!
Br-Choku's 6 Transparency Standards
Our Breeder sellers disclose detailed care specs for all Coral listings. We prioritize Aquacultured/CB specimens, verify WYSIWYG photos, and provide difficulty ratings—avoiding wild-caught.
- Aquacultured
- WYSIWYG Photo
- Difficulty Disclosed
- Frag/Colony
- Care Info Included
- Trade name shown
Browse all 66 breeds
Difficulty
No listings match your filters
Adjust your filters, or get notified when new listings arrive.
Getting alerts is free with a member account. When new listings match your saved search, we'll notify you by email and in-app.
Browse other categories
Verified breeders (preview)
About Hydnophora (Horn Coral)
Hydnophora (Horn Coral) blends LPS and SPS traits, with vivid green color and fast growth, but its aggressive nature calls for careful placement. Suited to intermediate keepers, it can live for 10+ years.
7 things to know before welcoming a Hydnophora (Horn Coral)
1Its Aggressive Nature
Hydnophora is known for being highly aggressive toward other corals. As colonies grow and come into contact with neighbors, they can cause damage, so it's important to leave plenty of space when placing them in the tank.
2Fast Growth Rate
Its fluorescent green colonies grow relatively quickly, making visible changes easy to enjoy over time. Because of this, it's worth planning your layout with extra room to accommodate future growth.
3Best for Intermediate Keepers
Hydnophora is generally considered suitable for intermediate keepers rather than complete beginners. It's a good idea to build up some experience with water quality and lighting basics before bringing one home.
4The Hydnophore Structure
Its defining feature is the dense covering of small projections called hydnophores, which give the coral its name. This structure gives it a texture and presence somewhere between LPS and SPS corals.
5A Coral for the Long Haul
With a lifespan of 10 years or more, Hydnophora can reward stable care with years of growth to enjoy. Since adults can reach 10 to 40 cm, it's worth planning tank space with that eventual size in mind.
6Lighting and Flow Needs
Keeping the colony's color and health in good shape depends on stable lighting and moderate water flow. When choosing a placement spot, check that both light and flow conditions are well balanced.
7Everyday Observation
Changes in how full the projections look or shifts in color can be useful signs of the coral's condition. Make a habit of checking regularly for contact with neighboring corals or other changes as it grows.
Frequently asked questions about Hydnophora (Horn Coral)
- Q.Can Hydnophora be kept with other corals in the same tank?
- A.Because Hydnophora is highly aggressive, it needs to be placed with plenty of distance from other corals. As it grows, contact with neighboring colonies can cause damage, so it's important to account for its future size when planning your layout.
- Q.Is this coral suitable for beginners?
- A.Hydnophora is generally considered suitable for intermediate keepers rather than complete beginners. It's a good idea to gain some experience with water quality and lighting basics before bringing one into your tank.
- Q.How large does Hydnophora grow?
- A.Adult colonies are typically around 10 to 40 cm in size. Since it grows relatively quickly, it's wise to plan for its eventual size when choosing where to place it.
- Q.How long can Hydnophora live?
- A.With stable care, Hydnophora is said to live 10 years or more. That makes it a coral you can enjoy watching grow and change color over a long period.
- Q.Is Hydnophora subject to any special regulations?
- A.Hydnophora (Horn Coral) is not subject to CITES.
Useful tools for Hydnophora (Horn Coral) care
Learn more about Hydnophora (Horn Coral) in the encyclopedia
View Hydnophora (Horn Coral) encyclopedia entry →
Care difficulty, lifespan, size and diet — all basics covered.
More in this category
Can't find the one you're looking for?
Post your wishes for free and breeders with matching animals will contact you with introductions.

