Can Koi Angelfish live with Fire Rasbora?
Caution — with care
Why
- Koi Angelfish may eat Fire Rasbora; add only full-grown adults, because juveniles and fry will be picked off.
- Only a narrow temperature overlap — keep both around 78–79°F.
Sweet spot: both do well at 78–79°F and pH 6–7 — aim there.
Side-by-side
| Koi Angelfish | Fire Rasbora | |
|---|---|---|
| Temperature | 78–84°F | 72–79°F |
| pH | 6–7.5 | 5.5–7 |
| Hardness (GH) | 3–12 dGH | 4–8 dGH |
| Adult size | 6" | 1.6" |
| Temperament | Peaceful | Peaceful |
| Min tank | 30 gal | 15 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
Design the whole tank, not just the stocking
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Design a tank with Koi Angelfish, Fire Rasbora →Everything compatible with Koi Angelfish · …with Fire Rasbora