Can Koi Angelfish live with Platy?
Light caution
Why
- Only a narrow water hardness overlap — keep both around 10–12 dGH.
Sweet spot: both do well at 78–82°F and pH 7–7.5 — aim there.
Side-by-side
| Koi Angelfish | Platy | |
|---|---|---|
| Temperature | 78–84°F | 70–82°F |
| pH | 6–7.5 | 7–8.2 |
| Hardness (GH) | 3–12 dGH | 10–28 dGH |
| Adult size | 6" | 2.5" |
| Temperament | Peaceful | Peaceful |
| Min tank | 30 gal | 15 gal |
Together, plan on at least 30 gallons.
How to make it work
- Target the overlapping water-parameter range and acclimate slowly.
Sort it with: GH remineraliser
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Design a tank with Koi Angelfish, Platy →Everything compatible with Koi Angelfish · …with Platy