Can Black Molly live with Carnival / Polka Dot Freshwater Crab?
Caution — with care
Why
- Carnival / Polka Dot Freshwater Crab can grab Black Molly while it sleeps — only fast mid/top-water fish are reasonably safe.
Sweet spot: both do well at 75–82°F and pH 7.5–8 — aim there.
Side-by-side
| Black Molly | Carnival / Polka Dot Freshwater Crab | |
|---|---|---|
| Temperature | 72–82°F | 75–82°F |
| pH | 7–8.5 | 7.5–8 |
| Hardness (GH) | 12–30 dGH | 8–15 dGH |
| Adult size | 4" | 1.5" |
| Temperament | Peaceful | Peaceful |
| Min tank | 30 gal | 10 gal |
Together, plan on at least 30 gallons.
How to make it work
- Only combine with fast, mid/top-water fish and give the tankmates plenty of escape routes.
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Design a tank with Black Molly, Carnival / Polka Dot Freshwater Crab →Everything compatible with Black Molly · …with Carnival / Polka Dot Freshwater Crab