Fish care
Zebra Danio: Complete Care Guide
Last updated: May 2026
Structured care sheet for Zebra danio (Danio rerio). Validate every purchase with the free aquarium stocking calculator, parameter testing habits, and the species database table.
- Cross-check length and temperature against the species explorer.
- Track nitrate drift weekly once the tank has cycled.
- Refer to the species hub for long-form tank mate essays.
Speed versus overcrowding
Zebra danios tolerate cool water and forgive beginner mistakes, but tight tanks turn them into fin nippers. Provide horizontal sprint length and a true school - fewer than six individuals often skitter stressfully at the glass.
Breeding and genetics
Wild-type stripes differ from GloFish strains; keep dye expectations realistic and avoid mixing long-fin variants with nippy tank mates that chase filament extensions.
See tank mate combinations tuned to temperament overlap.
Browser calculator stays free. The app only matters if you want several tanks, photos, and test history on your phone.
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