Can Guppy live with Sailfin Molly?
Light caution
Why
- Only a narrow pH overlap — keep both around 7.5–7.8.
Sweet spot: both do well at 72–82°F and pH 7.5–7.8 — aim there.
Side-by-side
| Guppy | Sailfin Molly | |
|---|---|---|
| Temperature | 72–82°F | 68–82°F |
| pH | 6.8–7.8 | 7.5–8.5 |
| Hardness (GH) | 8–20 dGH | 12–30 dGH |
| Adult size | 2" | 5" |
| Temperament | Peaceful | Peaceful |
| Min tank | 10 gal | 30 gal |
Together, plan on at least 30 gallons.
How to make it work
- Target the overlapping water-parameter range and acclimate slowly.
Design the whole tank, not just the stocking
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Design a tank with Guppy, Sailfin Molly →Everything compatible with Guppy · …with Sailfin Molly