Water parameters
Overview
The barred danio is a species endemic to the Nilwala River basin in southern Sri Lanka. The dark vertical bars lined up along its golden-olive body earned it the English name "barred danio." It grows to about 6 cm. Because its habitat is very small and under threat, it is counted among the critically endangered species in the wild. It is important that fish in the hobby are captive-bred rather than wild-caught; breeding by hobbyists also contributes to the conservation of the species.
Tank Setup
- At least 80 liters and 80 cm in length for a school of 6–10.
- 22–25°C, pH 6–7, soft to moderately hard water.
- Gentle to moderate current and high oxygen; gravel substrate, stones and plants along the sides.
- Use a lid since it jumps.
Diet
Omnivorous. It accepts flakes and granules; frozen brine shrimp, daphnia and mosquito larvae help maintain color and condition.
Behavior and Compatibility
Peaceful and active. As a school it swims in the upper and middle layers; males flare their fins at each other and engage in short chases.
Good companions: other danios and rasboras, small barbs, corydoras, kuhli loaches, current-loving loaches.
Avoid: large and predatory species, slow and long-finned fish.
A short profile for this species
The Barred Danio 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
Geophagus surinamensis
Cryptocoryne Parva
Gold Spot Pleco (L001)
Adolfo's Cory
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






