Can Harlequin Rasbora live with Red Devil Vampire Crab?
Caution — with care
Why
- Red Devil Vampire Crab can grab Harlequin Rasbora while it sleeps — only fast mid/top-water fish are reasonably safe.
- Only a narrow pH overlap — keep both around 7.5–7.5.
Sweet spot: both do well at 75–80°F and pH 7.5–7.5 — aim there.
Side-by-side
| Harlequin Rasbora | Red Devil Vampire Crab | |
|---|---|---|
| Temperature | 72–80°F | 75–82°F |
| pH | 6–7.5 | 7.5–8 |
| Hardness (GH) | 2–12 dGH | 8–15 dGH |
| Adult size | 1.75" | 1.5" |
| Temperament | Peaceful | Peaceful |
| Min tank | 15 gal | 10 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.
- Target the overlapping water-parameter range and acclimate slowly.
Where to buy
- Harlequin Rasbora: buy at The Shrimp Farm · The Shrimp Farm 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.
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Design a tank with Harlequin Rasbora, Red Devil Vampire Crab →Everything compatible with Harlequin Rasbora · …with Red Devil Vampire Crab