Can Thai Devil Crab live with German Blue Ram?
Not recommended
Why
- Thai Devil Crab hunts along the bottom and will catch the bottom-dwelling German Blue Ram, especially at night.
- No overlapping pH: Thai Devil Crab wants 7.5–8.5 but German Blue Ram wants 5.5–7.
- Only a narrow water hardness overlap — keep both around 8–8 dGH.
Side-by-side
| Thai Devil Crab | German Blue Ram | |
|---|---|---|
| Temperature | 75–84°F | 78–85°F |
| pH | 7.5–8.5 | 5.5–7 |
| Hardness (GH) | 8–18 dGH | 1–8 dGH |
| Adult size | 2" | 2.5" |
| Temperament | Semi-aggressive | Peaceful |
| Min tank | 20 gal | 20 gal |
Together, plan on at least 20 gallons.
Compatible alternatives
Instead of Thai Devil Crab (to keep German Blue Ram):
- Thai Micro Pom Pom Crab — 0.8", peaceful
- Thai Micro Crab — 0.4", peaceful
- Pom Pom Crab — 1", semi-aggressive
Instead of German Blue Ram (to keep Thai Devil Crab):
- Betta (Siamese Fighting Fish) — 2.5", semi-aggressive
- Black Skirt Tetra — 2.5", semi-aggressive
- Platy — 2.5", peaceful
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Design a tank with Thai Devil Crab, German Blue Ram →Everything compatible with Thai Devil Crab · …with German Blue Ram