Can Black Skirt Tetra live with Yucatan Molly?
Caution — with care
Why
- Black Skirt Tetra is a fin-nipper and will shred the long/flowing fins of Yucatan Molly.
- Only a narrow pH overlap — keep both around 7.5–7.5.
- Only a narrow water hardness overlap — keep both around 15–15 dGH.
- Black Skirt Tetra is semi-aggressive — give the peaceful Yucatan Molly plenty of space, cover and broken sight lines.
Sweet spot: both do well at 72–82°F and pH 7.5–7.5 — aim there.
Side-by-side
| Black Skirt Tetra | Yucatan Molly | |
|---|---|---|
| Temperature | 70–82°F | 72–82°F |
| pH | 5.5–7.5 | 7.5–8.5 |
| Hardness (GH) | 3–15 dGH | 15–30 dGH |
| Adult size | 2.5" | 6" |
| Temperament | Semi-aggressive | Peaceful |
| Min tank | 20 gal | 40 gal |
Together, plan on at least 40 gallons.
How to make it work
- Keep the nipper in a bigger group (8+) to spread out the nipping, and avoid long-finned tankmates.
- Target the overlapping water-parameter range and acclimate slowly.
- Use a larger, well-decorated tank with sightline breaks, keep everyone well-fed, and add the calmer fish first.
Sort it with: GH remineraliser
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Design a tank with Black Skirt Tetra, Yucatan Molly →Everything compatible with Black Skirt Tetra · …with Yucatan Molly