Can Guppy live with Molly?
Light caution
Why
- Molly is large enough to threaten a small Guppy — usually fine once both are adult, but watch new additions.
Sweet spot: both do well at 72–82°F and pH 7–7.8 — aim there.
Side-by-side
| Guppy | Molly | |
|---|---|---|
| Temperature | 72–82°F | 72–82°F |
| pH | 6.8–7.8 | 7–8.5 |
| Hardness (GH) | 8–20 dGH | 12–30 dGH |
| Adult size | 2" | 4" |
| Temperament | Peaceful | Peaceful |
| Min tank | 10 gal | 30 gal |
Together, plan on at least 30 gallons.
Where to buy
- Guppy: buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- Molly: buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
Live-animal shipping: add a heat pack below 50°F, expect weather holds above 90°F, and schedule delivery for a moderate week when someone can receive it promptly.
Build a full tank around this stocking →Everything compatible with Guppy · …with Molly