Can Black Molly live with Neon Blue Rasbora?
Caution — with care
Why
- No overlapping pH: Black Molly wants 7–8.5 but Neon Blue Rasbora wants 4.5–6.5.
- No overlapping water hardness: Black Molly wants 12–30 dGH but Neon Blue Rasbora wants 1–5 dGH.
- Very different sizes (Black Molly 4" vs Neon Blue Rasbora 0.8") — these two need different tanks, and the smaller fish will be out-competed at feeding time.
Side-by-side
| Black Molly | Neon Blue Rasbora | |
|---|---|---|
| Temperature | 72–82°F | 72–79°F |
| pH | 7–8.5 | 4.5–6.5 |
| Hardness (GH) | 12–30 dGH | 1–5 dGH |
| Adult size | 4" | 0.8" |
| Temperament | Peaceful | Peaceful |
| Min tank | 30 gal | 10 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 · A larger tank
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Design a tank with Black Molly, Neon Blue Rasbora →Everything compatible with Black Molly · …with Neon Blue Rasbora