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Here’s all about Alternanthera reineckii 'Rosanervig' — a stunning stem plant known for its vibrant pink veined leaves, often used as a highlight or focal point in aquascaping.
🌿 Scientific Classification
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Scientific Name: Alternanthera reineckii ‘Rosanervig’
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Family: Amaranthaceae
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Common Names:
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AR Rosanervig
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Alternanthera Pink Vein
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Rosanervig Alternanthera
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Origin: Cultivar (not found in the wild naturally)
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Likely bred from South American A. reineckii varieties
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🌱 Appearance
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Leaves: Oval to elongated with bright pink veins running through reddish to pink leaves
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Coloration:
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Top side: Rosy red to bright pink with pronounced white/pink veins
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Underside: Deep pink or reddish-purple
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Height: 20–30 cm (8–12 inches)
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Growth Style: Upright, bushy stem plant
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Position: Midground to background
💧 Tank Requirements
| Parameter | Ideal Range |
|---|---|
| Temperature | 22–28°C (72–82°F) |
| pH | 5.5 – 7.5 |
| Hardness | Soft to moderately hard (2–12 dGH) |
| Lighting | Medium to high (high = more vibrant) |
| CO₂ | Recommended (for best color and form) |
| Substrate | Nutrient-rich aquasoil preferred |
🌾 Growth & Propagation
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Growth Rate: Moderate
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Propagation:
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Cut top portion and replant in substrate
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Side shoots can also be trimmed and replanted
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Spacing: 2–4 cm between stems
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Trimming: Promotes bushier and fuller appearance
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Tends to grow denser than other Alternanthera varieties
🌟 Aquascaping Use
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Adds a bold splash of color in contrast to green plants
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Excellent for Dutch-style layouts and color-grouped sections
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Commonly used as a focal point plant in the mid-background
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Combines beautifully with:
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Rotala rotundifolia
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Limnophila aromatica
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Ludwigia super red
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Pogostemon erectus
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🧠 Care Tips
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Needs consistent CO₂ injection and bright light for vibrant pink coloring
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Dose iron and micronutrients regularly to avoid pale leaves
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Avoid shading – ensure the plant gets unobstructed light
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Regular trimming keeps it compact and encourages side shoots
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Watch for algae on slow-growing or lower shaded leaves
⚠️ Common Issues
| Problem | Cause |
|---|---|
| Dull coloration | Low light or lack of CO₂ |
| Yellowing leaves | Iron or micronutrient deficiency |
| Leggy/stretching growth | Insufficient trimming or low light |
| Melting lower leaves | CO₂ fluctuations or poor water circulation |
🐠 Compatibility
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Safe with all aquarium livestock:
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Community fish
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Shrimp
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Snails
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Avoid herbivorous fish like large goldfish or some cichlids
📌 Quick Summary
| Feature | Description |
|---|---|
| Color | Pink, red, with bright contrasting veins |
| Lighting | Medium to high (high for pink intensity) |
| CO₂ | Strongly recommended |
| Growth Rate | Moderate |
| Aquascape Use | Midground / background focal plant |
| Difficulty | Moderate |
✅ Why Choose Alternanthera ‘Rosanervig’?
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Stunning pink veined leaves unmatched in contrast
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Adds drama and balance to green-dominant layouts
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Easier to grow than some other red plants with the right care
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Excellent choice for Dutch tanks and show tanks
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