Can Koi Angelfish live with Neon Tetra?
Caution — with care
Why
- Koi Angelfish may eat Neon Tetra; add only full-grown adults, because juveniles and fry will be picked off.
- Only a narrow temperature overlap — keep both around 78°F.
Sweet spot: both do well at 78–78°F and pH 6–7 — aim there.
Side-by-side
| Koi Angelfish | Neon Tetra | |
|---|---|---|
| Temperature | 78–84°F | 68–78°F |
| pH | 6–7.5 | 5.5–7 |
| Hardness (GH) | 3–12 dGH | 1–8 dGH |
| Adult size | 6" | 1.5" |
| Temperament | Peaceful | Peaceful |
| Min tank | 30 gal | 10 gal |
Together, plan on at least 30 gallons.
How to make it work
- Add only full-grown adults — never juveniles, which will be eaten.
- Target the overlapping water-parameter range and acclimate slowly.
Sort it with: An adjustable heater → Chewy
Where to buy
- Koi Angelfish: buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- Neon Tetra: buy at Aquarium Co-Op
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 Neon Tetra