Peruvian Red Pencilfish (Nannostomus mortenthaleri)

Peruvian Red Pencilfish (Nannostomus mortenthaleri)

One of the most striking nano fish available, Peruvian Red Pencilfish are prized for their intense red coloration and elegant top-dwelling behavior.

These premium pencilfish are perfect for planted aquariums and aquascaping setups, where their vivid red color stands out beautifully against green plants and darker backgrounds.

Peaceful and graceful, Peruvian Red Pencilfish bring both color and sophistication to smaller community tanks. They are especially attractive in natural-style aquariums with driftwood, fine plants, and calm tank mates.

Size at Sale: ~0.75-1 inch

🐠 Key Features

• Intense red coloration
• Peaceful top-dwelling behavior
• Premium nano fish for planted aquariums
• Excellent for aquascaping displays
• Elegant and refined appearance

🔥 Why They Stand Out

Peruvian Red Pencilfish are considered one of the most colorful and desirable pencilfish species, making them a standout choice for hobbyists looking for something unique and high-end.

🐠 Ideal Tank Mates

• Ember Tetras
• Green Neon Tetras
• Rasboras
• Corydoras Catfish
• Shrimp and snails

🛠 Care Tips

• Keep in groups of 6 or more
• Best in planted aquariums with cover
• Provide peaceful tank mates
• Use darker substrate or background for best color contrast

🍽 Recommended Food

• Micro pellets
• Fine flake food
• Frozen foods (baby brine shrimp, daphnia)
• Small live foods when available

📦 What Youll Receive

• Healthy Peruvian Red Pencilfish
• Carefully packed for safe shipping
• Heat/cold packs as needed
• Live arrival guarantee

🔍 Frequently Asked Questions

Are Peruvian Red Pencilfish good for planted tanks?
Yes, they are excellent for planted aquariums and aquascaping layouts.

How many should I keep together?
Keep at least 6 or more for best behavior and reduced stress.

Are they aggressive?
No, they are peaceful and do well with calm community fish.

What part of the tank do they swim in?
They are mostly top-dwelling fish and prefer the upper areas of the aquarium.