Can Koi Angelfish live with Black Skirt Tetra?
Caution — with care
Why
- Black Skirt Tetra is a fin-nipper and will shred the long/flowing fins of Koi Angelfish.
- Black Skirt Tetra is semi-aggressive — give the peaceful Koi Angelfish plenty of space, cover and broken sight lines.
Sweet spot: both do well at 78–82°F and pH 6–7.5 — aim there.
Side-by-side
| Koi Angelfish | Black Skirt Tetra | |
|---|---|---|
| Temperature | 78–84°F | 70–82°F |
| pH | 6–7.5 | 5.5–7.5 |
| Hardness (GH) | 3–12 dGH | 3–15 dGH |
| Adult size | 6" | 2.5" |
| Temperament | Peaceful | Semi-aggressive |
| Min tank | 30 gal | 20 gal |
Together, plan on at least 30 gallons.
How to make it work
- Keep the nipper in a bigger group (8+) to spread out the nipping, and avoid long-finned tankmates.
- Use a larger, well-decorated tank with sightline breaks, keep everyone well-fed, and add the calmer fish first.
Sort it with: GH remineraliser
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Design a tank with Koi Angelfish, Black Skirt Tetra →Everything compatible with Koi Angelfish · …with Black Skirt Tetra