Can Cajun Dwarf Crayfish live with Pygmy Rasbora?
Caution — with care
Why
- Almost no shared temperature: Cajun Dwarf Crayfish wants 65–75°F and Pygmy Rasbora wants 75–82°F, so only 75°F suits both — too fine a margin to actually hold.
- Cajun Dwarf Crayfish can grab Pygmy Rasbora while it sleeps — only fast mid/top-water fish are reasonably safe.
Sweet spot: both do well at 75–75°F and pH 6.5–7 — aim there.
Side-by-side
| Cajun Dwarf Crayfish | Pygmy Rasbora | |
|---|---|---|
| Temperature | 65–75°F | 75–82°F |
| pH | 6.5–8 | 5–7 |
| Hardness (GH) | 5–15 dGH | 1–8 dGH |
| Adult size | 1.5" | 0.8" |
| Temperament | Peaceful | Peaceful |
| Min tank | 10 gal | 5 gal |
Together, plan on at least 10 gallons.
How to make it work
- Target the overlapping water-parameter range and acclimate slowly.
- Only combine with fast, mid/top-water fish and give the tankmates plenty of escape routes.
Sort it with: An adjustable heater
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Design a tank with Cajun Dwarf Crayfish, Pygmy Rasbora →Everything compatible with Cajun Dwarf Crayfish · …with Pygmy Rasbora