What Size Tank Does a Dwarf Gourami Need?
Minimum tank: 10 gallons
A Dwarf Gourami (Trichogaster lalius) grows to about 3.5 in (8.9 cm), so the practical minimum is a 10-gallon aquarium. A pair or small group is typical, so leave a little extra room for tankmates.
| Single fish or pair | 10 gallons |
|---|---|
| Comfortable group | 10 gallons |
| Community setup | 20 gallons+ |
Bigger is easier: more water dilutes waste and holds temperature and pH steady. See stocking ideas for a 10-gallon tank or try the stocking calculator.
Frequently asked questions
What is the minimum tank size for a Dwarf Gourami?
At least 10 gallons.
Can a Dwarf Gourami live in a smaller tank?
Going under 10 gallons stresses the fish, worsens water quality and shortens its life — not recommended.
More on this species: Dwarf Gourami full care guide · tank size · temperature · pH & hardness · tank mates