Can Dwarf Crayfish (CPO) live with False Rummynose Tetra?
Caution — with care
Why
- Only a narrow pH overlap — keep both around 7.
- Only a narrow water hardness overlap — keep both around 6–8 dGH.
- Dwarf Crayfish (CPO) can grab False Rummynose Tetra while it sleeps — only fast mid/top-water fish are reasonably safe.
Sweet spot: both do well at 75–79°F and pH 7–7 — aim there.
Side-by-side
| Dwarf Crayfish (CPO) | False Rummynose Tetra | |
|---|---|---|
| Temperature | 65–79°F | 75–82°F |
| pH | 7–8 | 5.5–7 |
| Hardness (GH) | 6–15 dGH | 2–8 dGH |
| Adult size | 1.75" | 2" |
| Temperament | Peaceful | Peaceful |
| Min tank | 10 gal | 20 gal |
Together, plan on at least 20 gallons.
How to make it work
- Target the overlapping water-parameter range and acclimate slowly.
- Only combine with fast, mid/top-water fish and give the tankmates plenty of escape routes.
Sort it with: GH remineraliser → Aquarium Co-Op
Where to buy
- Dwarf Crayfish (CPO): buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- False Rummynose Tetra: buy at Flip Aquatics · Flip Aquatics 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.
Build a full tank around this stocking →Everything compatible with Dwarf Crayfish (CPO) · …with False Rummynose Tetra