What size tank do emerald dwarf rasboras need?
At least 14 gallons (54 liters) for a group of 8. The smallest standard tank that works is the 15 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: Danio erythromicron.
How many emerald dwarf rasboras in each tank size?
This is how many each standard tank carries comfortably if emerald dwarf rasboras are the only fish in it. Share the tank with other species and the number goes down.
| Tank | How many emerald dwarf rasboras |
|---|---|
| 5 gallon | Too small |
| 10 gallon | Too small |
| 20 gallon long | up to 28 |
| 29 gallon | up to 41 |
| 40 gallon breeder | up to 57 |
| 55 gallon | 60 or more |
| 75 gallon | 60 or more |
| 125 gallon | 60 or more |
Check emerald dwarf rasboras against your own tank and other fish
Good to know
- Timid. Keep a large group in a quiet, well-planted tank.
- Keep at least 8. Alone or in twos and threes, emerald dwarf rasboras hide, stop eating well, or pick on each other.
Tank mates for emerald dwarf rasboras
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.
- Salt and pepper corydoras
- Glowlight danio
- Bandit corydoras
- Zebra danio
- Hillstream loach
- Bloodfin tetra
- Umbrella dwarf cichlid
- Pearl danio
Poor matches
- Betta: Their temperature ranges barely overlap: Emerald dwarf rasbora likes 68–75 °F (20–24 °C), Betta likes 75–82 °F (24–28 °C).
- Angelfish: Angelfish (about 6 in) can eat emerald dwarf rasbora (about 0.8 in).
- Fancy goldfish: Goldfish do best with other fancy goldfish.
- Oscar: Oscar is aggressive and will bully or kill peaceful fish such as emerald dwarf rasbora.
Questions and answers
What size tank do emerald dwarf rasboras need?
At least 14 gallons (54 liters) for a group of 8. The smallest standard tank that works is the 15 gallon. A bigger tank is always easier to keep stable.
How many emerald dwarf rasboras should be kept together?
At least 8. Emerald dwarf rasboras are social animals and only behave naturally in a group. A group of 20 or more is better if the tank has room.
Can emerald dwarf rasboras live in a 10 gallon tank?
No. Emerald dwarf rasbora needs at least 14 gallons (54 liters).
What temperature do emerald dwarf rasboras need?
68–75 °F (20–24 °C), with a pH of 7–8. A heater is only needed if your room gets cold.
Can emerald dwarf rasboras live with a betta?
It is not a good match. Their temperature ranges barely overlap: Emerald dwarf rasbora likes 68–75 °F (20–24 °C), Betta likes 75–82 °F (24–28 °C).
More fish
- Head-and-tail-light tetra
- Pearl danio
- Glowlight danio
- Phoenix rasbora
- Black ruby barb
- Five-banded barb
- All 150 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.