Can Swordtail live with Yucatan Molly?
Compatible
Why
No conflicts — these two share similar water needs, temperament, and size, and neither is a threat to the other.
Sweet spot: both do well at 72–82°F and pH 7.5–8.4 — aim there.
Side-by-side
| Swordtail | Yucatan Molly | |
|---|---|---|
| Temperature | 72–82°F | 72–82°F |
| pH | 7–8.4 | 7.5–8.5 |
| Hardness (GH) | 12–30 dGH | 15–30 dGH |
| Adult size | 5.5" | 6" |
| Temperament | Peaceful | Peaceful |
| Min tank | 29 gal | 40 gal |
Together, plan on at least 40 gallons.
Where to buy
- Swordtail: buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- Yucatan 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 Swordtail · …with Yucatan Molly