Can Carnival / Polka Dot Freshwater Crab live with Royal Pleco?
Not recommended
Why
- Carnival / Polka Dot Freshwater Crab hunts along the bottom and will catch the bottom-dwelling Royal Pleco, especially at night.
- Only a narrow pH overlap — keep both around 7.5–7.5.
Side-by-side
| Carnival / Polka Dot Freshwater Crab | Royal Pleco | |
|---|---|---|
| Temperature | 75–82°F | 73–82°F |
| pH | 7.5–8 | 6.5–7.5 |
| Hardness (GH) | 8–15 dGH | 4–12 dGH |
| Adult size | 1.5" | 17" |
| Temperament | Peaceful | Peaceful |
| Min tank | 10 gal | 120 gal |
Together, plan on at least 120 gallons.
Compatible alternatives
Instead of Carnival / Polka Dot Freshwater Crab (to keep Royal Pleco):
- Thai Micro Pom Pom Crab — 0.8", peaceful
- Pom Pom Crab — 1", semi-aggressive
- Thai Micro Crab — 0.4", peaceful
Instead of Royal Pleco (to keep Carnival / Polka Dot Freshwater Crab):
- Oscar — 16", aggressive
- Kissing Gourami — 12", semi-aggressive
- Giant Gourami — 24", semi-aggressive
Design the whole tank, not just the stocking
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Design a tank with Carnival / Polka Dot Freshwater Crab, Royal Pleco →Everything compatible with Carnival / Polka Dot Freshwater Crab · …with Royal Pleco
Related pairings
Carnival / Polka Dot Freshwater Crab + Neon TetraCarnival / Polka Dot Freshwater Crab + Cherry ShrimpCarnival / Polka Dot Freshwater Crab + AngelfishCarnival / Polka Dot Freshwater Crab + Nerite SnailCarnival / Polka Dot Freshwater Crab + Amano ShrimpCarnival / Polka Dot Freshwater Crab + Harlequin Rasbora