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Toxic Green Anacropora
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Toxic Green Anacropora Coral Frag
The Toxic Green Anacropora is a striking SPS coral prized for its intense neon-green colouration and elegant branching growth. With fine, delicate branches and excellent polyp extension, this coral adds both movement and high-impact colour to reef aquariums—especially under blue or actinic lighting where its fluorescence truly stands out.
Often compared to Anacropora in appearance but generally more forgiving, Toxic Green Anacropora is a fantastic choice for reef keepers looking to add vibrant branching SPS without stepping into ultra-delicate species.
Natural Habitat & Distribution
Anacropora corals originate from the Indo-Pacific region, with populations found across:
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Indonesia
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The Great Barrier Reef, Australia
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Fiji and Tonga
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The Philippines
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Central Pacific reef systems
In the wild, Anacropora species inhabit shallow reef slopes and upper reef zones, where they are exposed to strong sunlight and consistent water movement. These conditions explain their preference for bright lighting and good flow in aquariums.
A Brief History
Anacropora corals have long been appreciated in the reef-keeping hobby for their Anacropora-like branching structure combined with slightly greater tolerance to fluctuations. As LED lighting became more prevalent, brightly coloured varieties such as the Toxic Green Anacropora gained popularity for their intense fluorescence and clean, modern reef aesthetic.
Today, Toxic Green Anacropora is valued as a visually striking SPS coral that bridges the gap between Montipora and Anacropora in both appearance and care level.
Appearance & Growth
Classified as an SPS (Small Polyp Stony) coral, Toxic Green Anacropora grows in a fine branching, open structure, developing upward and outward branches over time.
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Slender, delicate branches
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Strong polyp extension
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Intense neon-green fluorescence under blue lighting
With stable parameters, growth is steady and rewarding.
Placement & Lighting
Toxic Green Anacropora performs best under medium to high lighting, closely replicating its natural reef environment.
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Lighting: Medium–High
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Best placed in the mid to upper sections of the aquarium
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Lower light may result in reduced colour intensity
Flow Requirements
Provide moderate to strong, random flow to support healthy branch development, good polyp extension, and prevent detritus buildup. Avoid harsh, direct laminar flow aimed directly at the coral.
Water Chemistry
As with all SPS corals, stable water parameters are essential. Maintain consistent levels of:
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Calcium
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Alkalinity
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Magnesium
Alongside low nutrients and balanced trace elements. Regular testing and controlled dosing are recommended for best results.
Feeding
Primarily photosynthetic, Toxic Green Anacropora can benefit from occasional supplemental feeding such as:
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Fine powdered coral foods
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Micro-plankton blends
Light, infrequent feeding can support growth and enhance overall vitality.
Temperament & Spacing
Anacropora corals are generally peaceful, but their branching growth requires adequate spacing to prevent contact with neighbouring corals as they expand.
Frag Size & Natural Variation
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Frag size: Approximately 1 inch
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Each frag is unique and may vary slightly in colour and structure depending on lighting and tank conditions.
Care Summary
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Care Level: Moderate
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Flow: Medium–High
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Lighting: Medium–High
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Temperament: Peaceful
🪸 Coral Care Guide
Care Level
Moderate
Lighting
Medium
Water Flow
Moderate, indirect flow.
Placement
Lower to middle areas of the aquarium.
Temperament
Peaceful.
Growth Rate
Moderate, with gradual skeletal growth and increasing polyp density over time.
Frag Size
Typically supplied as a multi-polyp frag unless otherwise stated.
💧 Water Parameters
Purple Goniopora thrive in stable reef aquariums with consistent water chemistry.
Recommended Parameters
- Stable Alkalinity
- Calcium
- Magnesium
- Stable Nitrate & Phosphate levels
- Trace elements including iodine and iron are beneficial.
Avoid ultra-low nutrient systems, as Goniopora generally perform best in mature, nutrient-balanced aquariums.
🍤 Feeding & Nutrition
Purple Goniopora benefit from regular supplemental feeding to encourage long-term health, vibrant colour and strong polyp extension.
Recommended Foods
- Fine powdered coral foods
- Phytoplankton
- Micro-plankton blends
- Small particulate coral foods
Feeding Frequency
Feed lightly but consistently 2–3 times per week.
🌊 Placement & Acclimation
Purple Goniopora appreciate thoughtful placement and a gentle introduction to your aquarium.
Placement
- Lower to middle areas of the aquarium.
- Allow plenty of space for full polyp extension.
- Avoid direct contact with aggressive or stinging corals.
- Prevent polyps from rubbing against rockwork.
Lighting
Medium lighting is recommended.
Too much light may cause the coral to retract, while insufficient lighting can reduce extension.
Light acclimation is recommended whenever introducing a new specimen.
Water Flow
Provide moderate, indirect flow that keeps the polyps gently swaying.
Avoid strong, direct flow, which may prevent full extension.
Random, alternating flow patterns generally produce the best results.
🌍 Natural Habitat
Purple Goniopora originate from the Indo-Pacific region and are commonly found throughout:
- Indonesia
- Australia's Great Barrier Reef
- Fiji
- Tonga
- Papua New Guinea
- Central and Western Pacific reef systems
In the wild they inhabit sheltered lagoon environments and protected reef zones with moderate lighting, gentle water movement and nutrient-rich conditions.
Once considered difficult to keep, advances in modern reef keeping—including improved lighting, flow control and nutrition—have made healthy, aquacultured Goniopora far more reliable long-term additions to today's reef aquariums.
⭐ ReefGro Expert Advice
Purple Goniopora is one of our favourite LPS corals thanks to its elegant movement and rich purple colouration.
When fully extended, hundreds of delicate tentacles create constant movement that contrasts beautifully with SPS colonies and other fleshy LPS corals, making it an excellent centrepiece for mixed reef aquariums.
For the best results:
- Introduce the coral slowly using light acclimation.
- Maintain stable water chemistry.
- Feed regularly with fine particulate foods.
- Avoid placing it where neighbouring corals can sting the extended polyps.
- Be patient during acclimation—healthy Goniopora often become more fully extended as they settle into stable conditions.
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