Can Fiddler Crab live with Rubber Pleco (Rubbernose)?
Not recommended
Why
- Fiddler Crab hunts along the bottom and will catch the bottom-dwelling Rubber Pleco (Rubbernose), especially at night.
- No overlapping water hardness: Fiddler Crab wants 15–25 dGH but Rubber Pleco (Rubbernose) wants 4–12 dGH.
- Only a narrow pH overlap — keep both around 7.5–7.5.
Side-by-side
| Fiddler Crab | Rubber Pleco (Rubbernose) | |
|---|---|---|
| Temperature | 72–82°F | 68–77°F |
| pH | 7.5–8.5 | 6.5–7.5 |
| Hardness (GH) | 15–25 dGH | 4–12 dGH |
| Adult size | 2" | 4.5" |
| Temperament | Peaceful | Peaceful |
| Min tank | 15 gal | 30 gal |
Together, plan on at least 30 gallons.
Compatible alternatives
Instead of Fiddler Crab (to keep Rubber Pleco (Rubbernose)):
- Pom Pom Crab — 1", semi-aggressive
- Thai Micro Pom Pom Crab — 0.8", peaceful
- Thai Micro Crab — 0.4", peaceful
Instead of Rubber Pleco (Rubbernose) (to keep Fiddler Crab):
- Pearl Gourami — 4.5", peaceful
- Black Molly — 4", peaceful
- Blue Gourami — 5", semi-aggressive
Design the whole tank, not just the stocking
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Design a tank with Fiddler Crab, Rubber Pleco (Rubbernose) →Everything compatible with Fiddler Crab · …with Rubber Pleco (Rubbernose)