How Many Chocolate Gourami in a 20-Gallon Tank?
In a 20-gallon tank, plan on about 1–2 Chocolate Gourami, leaving room for tankmates and filtration headroom.
Why
Stocking is driven by adult size and waste output, not just fish count. Chocolate Gourami reaches about 2" with a light bioload, and needs 79–86°F water at pH 4–6.5. Always cycle the tank and test water before adding livestock.
| Adult size | 2" |
|---|---|
| Minimum tank | 15 gallons |
| Temperature | 79–86°F |
| pH | 4–6.5 |
| Temperament | Peaceful |
| Schooling | No |
| Diet | Omnivore |
| Care level | Advanced |
| Origin | Southeast Asian peat swamps |
More fish for a 20-gallon tank → Chocolate Gourami tankmates →