Water parameters
Overview
The barred pencilfish is immediately distinguished by the four to five dark, comma-shaped blotches arranged in a row on its body instead of the continuous line found on other pencilfish. It is a small species with a golden-brown body, about 3.5 cm long. It comes from a narrow area in Guyana and is rarely found in the trade. Its calm nature makes it a good choice for planted nano tanks.
Tank Setup
- At least 40 liters for a group of 8–12.
- 23–27°C, pH 5–7, soft water.
- Dense plants, floating plants and dim light.
- It can jump; a lid is required.
Diet
Its mouth is small. Micro granules, fine flakes, frozen cyclops and newly hatched brine shrimp are suitable. It mostly takes food from the middle and upper layers and rarely picks up food that falls to the bottom. Feed small amounts 1–2 times a day.
Behavior and Compatibility
A peaceful and calm species; it swims in groups in the middle layer. It does not harm other species and can be kept safely with shrimp.
Good companions: micro rasboras, small tetras, pygmy corydoras, otocinclus, dwarf shrimp.
Avoid: fast and greedy species, large fish, fin nippers.
A short profile for this species
The Barred Pencilfish page has the basics, but the sections below have not been written yet. If you keep this species, write a section from your own experience; it will be published under your name after editor approval.
Tank mates
This list is calculated automatically from the species profile and grows as new species are added to the catalog. Try it in the planner for a definite answer.
Usually compatible
Flame Tetra
Blackfin Corydoras
Polystictus Corydoras
Emerald Cory
Porthole Catfish
Keyhole Cichlid
Cupid Cichlid
Geophagus surinamensis
Cryptocoryne Parva
Gold Spot Pleco (L001)
Should not be kept together
Hobbyist notes
Things you won't find in books, learned by trial and error. The most helpful ones are on top.
Change history and contributors
- Page created · October 16, 2026







