Can Koi Angelfish live with Assassin Snail?
Compatible
Why
No conflicts — these two share similar water needs, temperament, and size, and neither is a threat to the other.
Sweet spot: both do well at 78–82°F and pH 7–7.5 — aim there.
Side-by-side
| Koi Angelfish | Assassin Snail | |
|---|---|---|
| Temperature | 78–84°F | 72–82°F |
| pH | 6–7.5 | 7–8 |
| Hardness (GH) | 3–12 dGH | 6–15 dGH |
| Adult size | 6" | 1" |
| Temperament | Peaceful | Peaceful |
| Min tank | 30 gal | 10 gal |
Together, plan on at least 30 gallons.
Where to buy
- Koi Angelfish: buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- Assassin Snail: 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 Koi Angelfish · …with Assassin Snail