What size tank do giant danios need?
At least 40 gallons (150 liters) for a group of 6. The smallest standard tank that works is the 37 gallon. A bigger tank is always easier to keep stable. We give the size for an adult fish in a proper group, because the small fish in the shop will grow. Scientific name: Devario aequipinnatus.
How many giant danios in each tank size?
This is how many each standard tank carries comfortably if giant danios are the only fish in it. Share the tank with other species and the number goes down.
| Tank | How many giant danios |
|---|---|
| 5 gallon | Too small |
| 10 gallon | Too small |
| 20 gallon long | Too small |
| 29 gallon | Too small |
| 40 gallon breeder | up to 8 |
| 55 gallon | up to 12 |
| 75 gallon | up to 16 |
| 125 gallon | up to 27 |
Check giant danios against your own tank and other fish
Good to know
- Keep at least 6. Alone or in twos and threes, giant danios hide, stop eating well, or pick on each other.
- This is a jumper. Use a lid with no gaps.
Tank mates for giant danios
These animals like the same water, are a safe size, and have a temper that fits. It is a match on paper: always watch new tankmates for the first week.
Poor matches
- Fancy goldfish: Goldfish do best with other fancy goldfish.
- Oscar: Oscar is aggressive and will bully or kill peaceful fish such as giant danio.
Questions and answers
What size tank do giant danios need?
At least 40 gallons (150 liters) for a group of 6. The smallest standard tank that works is the 37 gallon. A bigger tank is always easier to keep stable.
How many giant danios should be kept together?
At least 6. Giant danios are social animals and only behave naturally in a group. More is better if the tank has room.
Can giant danios live in a 10 gallon tank?
No. Giant danio needs at least 40 gallons (150 liters).
What temperature do giant danios need?
72–81 °F (22–27 °C), with a pH of 6–8. In most homes that means a heater.
Can giant danios live with a betta?
Usually, yes, in a tank of 40 gallons (150 liters) or more. They like the same water: 75–81 °F (24–27 °C). Every betta has its own temper, so watch closely for the first week and have a spare tank ready.
More fish
- Scissortail rasbora
- Lambchop rasbora
- Gold barb
- Golden pencilfish
- Japanese ricefish
- Rosy red minnow
- All 118 species
Adult size, tank size and water ranges follow the mainstream care consensus (Seriously Fish species profiles and FishBase maximum lengths). Where sources differ we use the more cautious figure. Stocking numbers come from our stocking calculator.