Can Cajun Dwarf Crayfish live with Harlequin Rasbora?
Light caution
Why
- Cajun Dwarf Crayfish can grab Harlequin Rasbora while it sleeps — only fast mid/top-water fish are reasonably safe.
Sweet spot: both do well at 72–75°F and pH 6.5–7.5 — aim there.
Side-by-side
| Cajun Dwarf Crayfish | Harlequin Rasbora | |
|---|---|---|
| Temperature | 65–75°F | 72–80°F |
| pH | 6.5–8 | 6–7.5 |
| Hardness (GH) | 5–15 dGH | 2–12 dGH |
| Adult size | 1.5" | 1.75" |
| Temperament | Peaceful | Peaceful |
| Min tank | 10 gal | 15 gal |
Together, plan on at least 15 gallons.
How to make it work
- Only combine with fast, mid/top-water fish and give the tankmates plenty of escape routes.
Where to buy
- Cajun Dwarf Crayfish: buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- Harlequin Rasbora: buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
Live-animal shipping: add a heat pack below 50°F, expect weather holds above 90°F, and schedule delivery for a moderate week when someone can receive it promptly.
Build a full tank around this stocking →Everything compatible with Cajun Dwarf Crayfish · …with Harlequin Rasbora