Zebra Danio: Tank Size, Tank Mates and Setup
A fast, hardy schooling fish that tolerates cooler water. Keep six or more.
- Minimum tank
- 10 gallons
- Temperature
- 64–77°F
- Group size
- 6 or more
- Adult size
- 2 inTop of the tank
- Very active; a longer tank suits it better than a tall one.
- Comfortable at room temperature in most homes.
Danio rerio. Figures are commonly published care ranges; see how it works.
How many zebra danios per tank size
The most you could keep if zebra danios were the only species. Open a size in the builder to add tank mates.
| Tank | Zebra danio, kept alone | |
|---|---|---|
| 5 gallon | Too small (needs 10+ gal) | |
| 10 gallon | Too small (needs 10+ gal) | |
| 20 gallon | Up to 13 | Plan this tank |
| 29 gallon | Up to 21 | Plan this tank |
| 40 gallon | Up to 30 | Plan this tank |
| 55 gallon | Up to 41 | Plan this tank |
| 75 gallon | Up to 56 | Plan this tank |
What you need for zebra danios in a 10-gallon tank
A starting setup: 6 zebra danios in the smallest standard tank that suits them.
10-gallon tank
- These fit a 10-gallon tank and get along. Aim for about 71°F.
Equipment, sized for this tank
Starter supplies
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Zebra danio tank mates
These share a temperature range and temperament with zebra danios, with no warnings from our checks.
Use caution with: german blue ram, fancy goldfish. Add them in the builder to see why.
Plan a tank around zebra danios
Add tank mates, check the stocking level and get the equipment sized for your tank.
Open the tank builderZebra danio questions
What size tank does a zebra danio need?
At least 10 gallons for a group of 6. A larger tank is more stable and gives you more choice of tank mates.
How many zebra danios can I keep in a 20-gallon tank?
Up to about 13 if they are the only species in the tank. Fewer if you add other fish.
Do zebra danios need a heater?
Usually yes. Zebra danio does best at 64–77°F, which is warmer than most rooms. A 10-gallon tank needs about 25 watts in a 68°F room.
What fish can live with zebra danios?
Good matches include bettas, neon tetras, cardinal tetras, ember tetras, rummy-nose tetras, black skirt tetras. They share a temperature range and temperament with zebra danios.