Can Black Kuhli Loach live with Yucatan Molly?
Light caution
Why
- Yucatan Molly is large enough to threaten a small Black Kuhli Loach — usually fine once both are adult, but watch new additions.
- No overlapping pH: Black Kuhli Loach wants 5.5–7 but Yucatan Molly wants 7.5–8.5.
- No overlapping water hardness: Black Kuhli Loach wants 2–10 dGH but Yucatan Molly wants 15–30 dGH.
Side-by-side
| Black Kuhli Loach | Yucatan Molly | |
|---|---|---|
| Temperature | 73–86°F | 72–82°F |
| pH | 5.5–7 | 7.5–8.5 |
| Hardness (GH) | 2–10 dGH | 15–30 dGH |
| Adult size | 3" | 6" |
| Temperament | Peaceful | Peaceful |
| Min tank | 20 gal | 40 gal |
Together, plan on at least 40 gallons.
How to make it work
- Target the overlapping water-parameter range and acclimate slowly.
Sort it with: GH remineraliser → Aquarium Co-Op
Where to buy
- Black Kuhli Loach: 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 Black Kuhli Loach · …with Yucatan Molly