Can Fiddler Crab live with Longfin Bristlenose Pleco?
Not recommended
Why
- Fiddler Crab hunts along the bottom and will catch the bottom-dwelling Longfin Bristlenose Pleco, especially at night.
- No overlapping water hardness: Fiddler Crab wants 15–25 dGH but Longfin Bristlenose Pleco wants 6.5–7.5 dGH.
- Only a narrow pH overlap — keep both around 7.5–7.6.
Side-by-side
| Fiddler Crab | Longfin Bristlenose Pleco | |
|---|---|---|
| Temperature | 72–82°F | 72–82°F |
| pH | 7.5–8.5 | 6.5–7.6 |
| Hardness (GH) | 15–25 dGH | 6.5–7.5 dGH |
| Adult size | 2" | 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 Longfin Bristlenose Pleco):
- Pom Pom Crab — 1", semi-aggressive
- Thai Micro Pom Pom Crab — 0.8", peaceful
- Thai Micro Crab — 0.4", peaceful
Instead of Longfin Bristlenose Pleco (to keep Fiddler Crab):
- Blue Gourami — 5", semi-aggressive
- Sailfin Molly — 5", peaceful
- Pearl Gourami — 4.5", peaceful
Where to buy
- Longfin Bristlenose Pleco: buy at The Shrimp Farm · The Shrimp Farm live-arrival guarantee
Live-animal shipping: add a heat pack below 50°F, expect weather holds above 90°F, and schedule delivery for a moderate week when someone can receive it promptly.
Design the whole tank, not just the stocking
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Design a tank with Fiddler Crab, Longfin Bristlenose Pleco →Everything compatible with Fiddler Crab · …with Longfin Bristlenose Pleco