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Coral Red Pencilfish - (Nannostomus mortenthaleri)

Coral Red Pencilfish - (Nannostomus mortenthaleri)

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Coral Red Pencilfish - (Nannostomus mortenthaleri)
Fish Details, Description and Information Below:

🐟 Coral Red Pencilfish – (Nannostomus mortenthaleri)

The Coral Red Pencilfish is a small, slender, and brilliantly colored freshwater fish prized for its vivid red stripes and peaceful nature. Native to South America, it is an excellent choice for community nano tanks and planted aquariums.


🌊 Habitat & Care

  • 🌎 Origin: South America (Brazil, Rio Negro basin)
  • 🏠 Tank Size: 10+ gallons
  • 🌡️ Temperature: 75–82°F (24–28°C)
  • 💧 pH Range: 5.5–7.0
  • 🪴 Tank Setup: Heavily planted tanks with subdued lighting and gentle water flow

🍽️ Diet

  • 🦐 Omnivorous: Feeds on small live or frozen foods like daphnia, brine shrimp, and high-quality micro-pellets or flakes

⚖️ Temperament

  • 🕊️ Peaceful and schooling
  • 🤝 Best kept in groups of 6 or more

🧠 Behavior & Special Considerations

  • 📏 Size: Up to 1.5 inches (4 cm)
  • 🧼 Prefers soft, acidic water and stable tank conditions
  • 🎨 Known for its striking red coloration and delicate movements

📋 At a Glance

🔖 Scientific Name Nannostomus mortenthaleri
🐟 Common Name Coral Red Pencilfish
🌎 Origin South America (Rio Negro basin)
📏 Size Up to 1.5 inches (4 cm)
🌡️ Temperature 75–82°F (24–28°C)
💧 pH Range 5.5–7.0
🐟 Temperament Peaceful, schooling
🏠 Tank Size 10+ gallons
🍽️ Diet Omnivore

💡 The Coral Red Pencilfish is a vibrant and peaceful schooling fish, perfect for planted community nano tanks.

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