Can Wild-Type Betta live with Black Molly?
Light caution
Why
- Only a narrow water hardness overlap — keep both around 12–12 dGH.
- Wild-Type Betta is semi-aggressive — give the peaceful Black Molly plenty of space, cover and broken sight lines.
Sweet spot: both do well at 76–82°F and pH 7–7.5 — aim there.
Side-by-side
| Wild-Type Betta | Black Molly | |
|---|---|---|
| Temperature | 76–82°F | 72–82°F |
| pH | 6–7.5 | 7–8.5 |
| Hardness (GH) | 2–12 dGH | 12–30 dGH |
| Adult size | 2.5" | 4" |
| Temperament | Semi-aggressive | 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.
- Keep a large, established shrimp colony in a heavily planted tank with moss and cover so enough survive to breed.
- Use a larger, well-decorated tank with sightline breaks, keep everyone well-fed, and add the calmer fish first.
Sort it with: GH remineraliser
Design the whole tank, not just the stocking
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Design a tank with Wild-Type Betta, Black Molly →Everything compatible with Wild-Type Betta · …with Black Molly