Can Thai Devil Crab live with Clown Rasbora?
Caution — with care
Why
- Thai Devil Crab can grab Clown 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 Clown Rasbora wants 5.5–7.
- Only a narrow water hardness overlap — keep both around 8–10 dGH.
Side-by-side
| Thai Devil Crab | Clown Rasbora | |
|---|---|---|
| Temperature | 75–84°F | 73–82°F |
| pH | 7.5–8.5 | 5.5–7 |
| Hardness (GH) | 8–18 dGH | 2–10 dGH |
| Adult size | 2" | 4" |
| Temperament | Semi-aggressive | Peaceful |
| Min tank | 20 gal | 30 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.
- Target the overlapping water-parameter range and acclimate slowly.
Sort it with: GH remineraliser
Design the whole tank, not just the stocking
Skapelab plans a complete, buildable planted aquarium around your fish — a hand-illustrated layout, the exact plants and hardscape, a placement map, and a full equipment and shopping list. Free.
Design a tank with Thai Devil Crab, Clown Rasbora →Everything compatible with Thai Devil Crab · …with Clown Rasbora