Can Thai Devil Crab live with Red-Line Rasbora?
Caution — with care
Why
- Thai Devil Crab can grab Red-Line Rasbora while it sleeps — only fast mid/top-water fish are reasonably safe.
- No overlapping pH: Thai Devil Crab wants 7.5–8.5 but Red-Line Rasbora wants 5–7.
- Only a narrow water hardness overlap — keep both around 8–8 dGH.
Side-by-side
| Thai Devil Crab | Red-Line Rasbora | |
|---|---|---|
| Temperature | 75–84°F | 73–81°F |
| pH | 7.5–8.5 | 5–7 |
| Hardness (GH) | 8–18 dGH | 1–8 dGH |
| Adult size | 2" | 1.75" |
| Temperament | Semi-aggressive | Peaceful |
| Min tank | 20 gal | 15 gal |
Together, plan on at least 20 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.
Sort it with: GH remineraliser
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Design a tank with Thai Devil Crab, Red-Line Rasbora →Everything compatible with Thai Devil Crab · …with Red-Line Rasbora