🐟 Cenepa Red Pencil Fish – (Nannostomus mortenthaleri)

The Cenepa Red Pencil Fish is one of the most striking and vibrant pencil fish species available in the aquarium trade. Native to the clear, slow-moving waters of the Río Cenepa in Peru, this nano fish is a true gem for planted and blackwater aquariums. Males display an intense crimson-red coloration with bold horizontal black stripes, making them a standout in any aquascape.

These fish thrive in peaceful community setups with other small, non-aggressive species. Their vivid colors intensify in well-maintained, soft, acidic water, especially when housed in groups of 8 or more. A heavily planted tank with dim lighting and plenty of hiding spots will help them feel secure and display their best colors.

📸 Photo is a representation of the fish you’ll receive. Actual fish may vary in size and coloration.

Quick Facts:

• Scientific Name: Nannostomus mortenthaleri
• Origin: Río Cenepa, Peru
• Adult Size: ~1.5 inches
• Temperament: Peaceful
• Tank Size: 10+ gallons
• Diet: Micropellets, frozen daphnia, brine shrimp, and fine flake foods
• Water Parameters: 74–82°F | pH 5.5–7.0 | Soft water preferred

DOA Guarantee (Dead on Arrival) ✅

• Photos Required: Please send a photo of the fish in its sealed bag within 2 hours of delivery, followed by one on a paper towel.
• Refund Policy: Refunds apply to the fish only – not the shipping. Orders typically ship within 2–3 business days.

Out of Stock? No Problem! 🐟

1. Choose a Replacement Fish from our collection.
2. Wait Until Restocked – we’ll notify you promptly.
3. Request a Full Refund – no hassle, no worries.

Add the dazzling beauty of the Cenepa Red Pencil Fish to your aquarium and enjoy their peaceful nature and brilliant coloration. Order today from Source Aquatics – your trusted source for healthy, vibrant fish. 🌿🐠