Can zebra danios and mollies live together?
With care
Zebra danios and mollies can share a tank, but there is something to watch.
Why
- Their pH ranges only meet at 7.5, which leaves no margin.
What each one needs
| Zebra danio | Molly | Both | |
|---|---|---|---|
| Temperature | 64–77°F (18–25°C) | 72–82°F (22–28°C) | 72–77°F (22–25°C) |
| pH | 6.5–7.5 | 7.5–8.5 | 7.5–7.5 |
| Minimum tank | 10 gal (38 L) | 20 gal (76 L) | 20 gal (76 L) |
| Keep at least | 6 | 3 | |
| Adult size | 2 in (5.1 cm) | 4 in (10.2 cm) |
The smallest tank for both
A 20 gallons (76 L) tank holds 6 zebra danios and 3 mollies at about 75% of its stocking limit, which leaves room for more.

