Can Carnival / Polka Dot Freshwater Crab live with Threestripe Cory?
Not recommended
Why
- Carnival / Polka Dot Freshwater Crab hunts along the bottom and will catch the bottom-dwelling Threestripe Cory, especially at night.
- Only a narrow pH overlap — keep both around 7.5–7.5.
Side-by-side
| Carnival / Polka Dot Freshwater Crab | Threestripe Cory | |
|---|---|---|
| Temperature | 75–82°F | 72–79°F |
| pH | 7.5–8 | 6–7.5 |
| Hardness (GH) | 8–15 dGH | 5–19 dGH |
| Adult size | 1.5" | 2.2" |
| Temperament | Peaceful | Peaceful |
| Min tank | 10 gal | 20 gal |
Together, plan on at least 20 gallons.
Compatible alternatives
Instead of Carnival / Polka Dot Freshwater Crab (to keep Threestripe Cory):
- Thai Micro Pom Pom Crab — 0.8", peaceful
- Pom Pom Crab — 1", semi-aggressive
- Thai Micro Crab — 0.4", peaceful
Instead of Threestripe Cory (to keep Carnival / Polka Dot Freshwater Crab):
- Betta (Siamese Fighting Fish) — 2.5", semi-aggressive
- Black Skirt Tetra — 2.5", semi-aggressive
- Cardinal Tetra — 2", peaceful buy at The Shrimp Farm · The Shrimp Farm live-arrival guarantee
Design the whole tank, not just the stocking
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Design a tank with Carnival / Polka Dot Freshwater Crab, Threestripe Cory →Everything compatible with Carnival / Polka Dot Freshwater Crab · …with Threestripe Cory
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