Can Fiddler Crab live with Kribensis?
Not recommended
Why
- Fiddler Crab hunts along the bottom and will catch the bottom-dwelling Kribensis, especially at night.
- Only a narrow pH overlap — keep both around 7.5–7.8.
Side-by-side
| Fiddler Crab | Kribensis | |
|---|---|---|
| Temperature | 72–82°F | 75–82°F |
| pH | 7.5–8.5 | 6–7.8 |
| Hardness (GH) | 15–25 dGH | 5–19 dGH |
| Adult size | 2" | 3.5" |
| Temperament | Peaceful | Semi-aggressive |
| Min tank | 15 gal | 20 gal |
Together, plan on at least 20 gallons.
Compatible alternatives
Instead of Fiddler Crab (to keep Kribensis):
- Pom Pom Crab — 1", semi-aggressive
- Thai Micro Pom Pom Crab — 0.8", peaceful
- Thai Micro Crab — 0.4", peaceful
Instead of Kribensis (to keep Fiddler Crab):
- Dwarf Gourami — 3.5", peaceful
- Scissortail Rasbora — 3.5", peaceful
- Thick-lipped Gourami — 3.5", peaceful
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Design a tank with Fiddler Crab, Kribensis →Everything compatible with Fiddler Crab · …with Kribensis