Can Black Molly live with Black Neon Tetra?
Light caution
Why
- Only a narrow water hardness overlap — keep both around 12–12 dGH.
- Large size gap (Black Molly 4" vs Black Neon Tetra 1.5") — watch that the smaller one gets its share at feeding time.
Sweet spot: both do well at 72–82°F and pH 7–7.5 — aim there.
Side-by-side
| Black Molly | Black Neon Tetra | |
|---|---|---|
| Temperature | 72–82°F | 72–82°F |
| pH | 7–8.5 | 5.5–7.5 |
| Hardness (GH) | 12–30 dGH | 2–12 dGH |
| Adult size | 4" | 1.5" |
| Temperament | Peaceful | Peaceful |
| Min tank | 30 gal | 15 gal |
Together, plan on at least 30 gallons.
How to make it work
- Target the overlapping water-parameter range and acclimate slowly.
Sort it with: GH remineraliser
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Design a tank with Black Molly, Black Neon Tetra →Everything compatible with Black Molly · …with Black Neon Tetra