One-lined Pencilfish
Nannostomus unifasciatus
FishFreshwater
Nannostomus unifasciatus reaches up to 4 cm. Its body is elongated and laterally compressed. A broad black stripe runs from snout to caudal peduncle. The fins are translucent with occasional reddish tint. It swims in schools and occupies the mid-water. It is a shy fish that appreciates hiding spots. In good condition, it may show golden reflections on the back.
Recommended parameters
| Parameter | Recommended range |
|---|---|
| Temperature | 23–28 |
| pH | 5.5–7 |
| GH | 1–10 |
| KH | 1–5 |
| NO₃ | ≤ 20 |
| PO₄ | ≤ 0.5 |
Care
Difficulty2/5
Dietcarnivore
Min. tank60 L
Min. group6
Adult size4 cm
Lifespan4 ans
Temperamentpeaceful
Care notes
Temperature 23-28°C, pH 5.5-7.0, GH 1-10. Minimum 60-liter tank for a group of 6. Water should be soft and acidic with gentle filtration. Feed with fine foods: brine shrimp nauplii, micro-worms, crushed flakes. Dense plants and roots are beneficial. Avoid aggressive fish. Compatible with small tetras, rasboras, and corydoras.