Skip to content
Three-lined Pencilfish, photographed on a transparent background
Photo: Tsunamicarlos at en.wikipedia · Public domain

FreshwaterComing soonCommon

Three-lined Pencilfish

Nannostomus trifasciatus

The Three-lined Pencilfish (Nannostomus trifasciatus) is a tropical freshwater fish of the family Lebiasinidae. It swims in midwater, close to the bottom. It grows to 3.6 cm (standard length, tail fin excluded). The IUCN Red List rates it Least Concern. In the aquarium it is kept at 22–28 °C.

Size
3.6 cmstandard length, tail fin excluded
Temperature
22–28 °C
pH
4.0–7.5
Tank footprint
75 × 30 cm

In the aquarium

Temperature22–28 °C
pH4.0–7.5
Hardness1–12 °dGH
Drawn to scale in a 75 cm tank

In the wild

Water type
Freshwater
Climate zone
Tropical
Habitat
Midwater, close to the bottom
Aquarium trade
Traded commercially

Conservation status

Classification

  1. OrderCharaciformes
  2. FamilyLebiasinidae
  3. GenusNannostomus
  4. SpeciesNannostomus trifasciatus

Quick answers

Three-lined Pencilfish size: how big does it get?
It grows to 3.6 cm (standard length, tail fin excluded).
Three-lined Pencilfish tank size: what is the minimum?
A tank with a footprint of at least 75 × 30 cm.
Three-lined Pencilfish water parameters: what does it need?
Temperature 22–28 °C, pH 4.0–7.5, hardness 1–12 °dGH.
Three-lined Pencilfish: is it endangered?
The IUCN Red List rates it Least Concern.

All species A–Z

Sources

The figures on this page are compiled from the references below.