How Many Moonlight Gourami in a 40-Gallon Tank?
In a 40-gallon tank, plan on about 1–2 Moonlight Gourami, leaving room for tankmates and filtration headroom.
Why
Stocking is driven by adult size and waste output, not just fish count. Moonlight Gourami reaches about 6" with a heavy bioload, and needs 79–86°F water at pH 6–7. Always cycle the tank and test water before adding livestock.
| Adult size | 6" |
|---|---|
| Minimum tank | 30 gallons |
| Temperature | 79–86°F |
| pH | 6–7 |
| Temperament | Peaceful |
| Schooling | No |
| Diet | Omnivore |
| Care level | Moderate |
| Origin | Southeast Asia |
More fish for a 40-gallon tank → Moonlight Gourami tankmates →