Can Assassin Snail live with Cardinal Tetra?
Caution — with care
Why
- Only a narrow pH overlap — keep both around 7.
- Only a narrow water hardness overlap — keep both around 6 dGH.
Sweet spot: both do well at 73–81°F and pH 7–7 — aim there.
Side-by-side
| Assassin Snail | Cardinal Tetra | |
|---|---|---|
| Temperature | 72–82°F | 73–81°F |
| pH | 7–8 | 5–7 |
| Hardness (GH) | 6–15 dGH | 1–6 dGH |
| Adult size | 1" | 2" |
| Temperament | Peaceful | Peaceful |
| Min tank | 10 gal | 15 gal |
Together, plan on at least 15 gallons.
How to make it work
- Target the overlapping water-parameter range and acclimate slowly.
Sort it with: GH remineraliser → Aquarium Co-Op
Where to buy
- Assassin Snail: buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- Cardinal 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 Assassin Snail · …with Cardinal Tetra