Red Pencilfish - Nannostomus mortenthaleri

Nannostomus mortenthaleri, commonly known as the coral red pencilfish, is a freshwater species of fish belonging to the characin family Lebiasinidae. It occurs widely and commonly in swamps and slow-moving waters in Brazil, Guyana, French Guiana, and Suriname.

Ideal Tank Setup

• Fine sand substrate
• leaf litter
• floating plants
• Maintain 26-28°C 

Compatible Tank Mates

These tranquil fish thrive best when housed alongside mild-tempered tank mates. To maintain a balanced environment, steer clear of placing them with hostile species.

• Small Tetras
• Rasboras
• Otocinclus
• Adult Dwarf Shrimp

Feeding

Pencil fish need a varied diet to shine. Specifically, offer high-quality flakes or pellets. Additionally, provide frozen or freeze-dried brine shrimp and daphnia. Feed small portions twice daily. Moreover, include plant-based foods like spirulina. Consequently, this nutrition supports their vibrant colours and health.

Fun Facts

• Species – Nannostomus mortenthaleri
• Common Name – Red Pencil Fish
• Origin – Brazil, Columbia, and Peru in South America
• Diet – Omnivore
• PH Range – Alkaline 6.5 – 7
• Temperature – Tropical 26-28°C
• Breed Type – Egg scatterer
• Current Size – approximately 3.5cm
• Max Size – 4 cm
• Tank Size – Minimum 60 litres
• Sex – Un-sexed