Can Altum Angelfish live with Black Skirt Tetra?
Caution — with care
Why
- Only a narrow temperature overlap — keep both around 82°F.
- Only a narrow water hardness overlap — keep both around 3–5 dGH.
- Black Skirt Tetra is semi-aggressive and may bully the peaceful Altum Angelfish — give lots of space and cover.
- Black Skirt Tetra is a fin-nipper and will shred the long/flowing fins of Altum Angelfish.
- Altum Angelfish is large enough to threaten a small Black Skirt Tetra — usually fine once both are adult, but watch new additions.
Sweet spot: both do well at 82–82°F and pH 5.5–6.5 — aim there.
Side-by-side
| Altum Angelfish | Black Skirt Tetra | |
|---|---|---|
| Temperature | 82–88°F | 70–82°F |
| pH | 4.5–6.5 | 5.5–7.5 |
| Hardness (GH) | 1–5 dGH | 3–15 dGH |
| Adult size | 7" | 2.5" |
| Temperament | Peaceful | Semi-aggressive |
| Min tank | 75 gal | 20 gal |
Together, plan on at least 75 gallons.
How to make it work
- Target the overlapping water-parameter range and acclimate slowly.
- Use a larger, well-decorated tank with sightline breaks, keep everyone well-fed, and add the calmer fish first.
- Keep the nipper in a bigger group (8+) to spread out the nipping, and avoid long-finned tankmates.
Sort it with: An adjustable heater → Chewy GH remineraliser → Aquarium Co-Op
Where to buy
- Altum Angelfish: buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- Black Skirt Tetra: 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 Altum Angelfish · …with Black Skirt Tetra