Can Cardinal Shrimp live with Thai Freshwater Crab?
Not recommended
Why
- Thai Freshwater Crab hunts shrimp and is 3.1× the length of Cardinal Shrimp — it will eat them.
- Thai Freshwater Crab is not on the verified shrimp-safe list, so we will not recommend it over a breeding Cardinal Shrimp colony. It may well be fine — it simply has not been confirmed by a source, and an unverified guess is not worth the colony.
- Thai Freshwater Crab will eat Cardinal Shrimp shrimplets. The colony still grows if there is moss or another dense hiding place for the babies.
Side-by-side
| Cardinal Shrimp | Thai Freshwater Crab | |
|---|---|---|
| Temperature | 79–84°F | 72–82°F |
| pH | 7.5–8.5 | 7–8 |
| Hardness (GH) | 8–18 dGH | 6–15 dGH |
| Adult size | 0.8" | 2.5" |
| Temperament | Peaceful | Semi-aggressive |
| Min tank | 15 gal | 15 gal |
Together, plan on at least 15 gallons.
Compatible alternatives
Instead of Cardinal Shrimp (to keep Thai Freshwater Crab):
- Blue Tiger Shrimp — 1.2", peaceful
- Chocolate Shrimp — 1", peaceful
- Orange Eye Blue Tiger Shrimp — 1.2", peaceful
Instead of Thai Freshwater Crab (to keep Cardinal Shrimp):
- Thai Devil Crab — 2", semi-aggressive
- Fiddler Crab — 2", peaceful
- Carnival / Polka Dot Freshwater Crab — 1.5", peaceful
Design the whole tank, not just the stocking
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Design a tank with Cardinal Shrimp, Thai Freshwater Crab →Everything compatible with Cardinal Shrimp · …with Thai Freshwater Crab