Can Altum Angelfish live with Betta (Siamese Fighting Fish)?
Caution — with care
Why
- Only a narrow temperature overlap — keep both around 82°F.
- Betta (Siamese Fighting Fish) is semi-aggressive and may bully the peaceful Altum Angelfish — give lots of space and cover.
- Altum Angelfish is large enough to threaten a small Betta (Siamese Fighting Fish) — usually fine once both are adult, but watch new additions.
Sweet spot: both do well at 82–82°F and pH 6–6.5 — aim there.
Side-by-side
| Altum Angelfish | Betta (Siamese Fighting Fish) | |
|---|---|---|
| Temperature | 82–88°F | 76–82°F |
| pH | 4.5–6.5 | 6–7.5 |
| Hardness (GH) | 1–5 dGH | 2–12 dGH |
| Adult size | 7" | 2.5" |
| Temperament | Peaceful | Semi-aggressive |
| Min tank | 75 gal | 5 gal |
Together, plan on at least 75 gallons.
How to make it work
- Target the overlapping water-parameter range and acclimate slowly.
- Keep a large, established shrimp colony in a heavily planted tank with moss and cover so enough survive to breed.
- Use a larger, well-decorated tank with sightline breaks, keep everyone well-fed, and add the calmer fish first.
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
- Betta (Siamese Fighting Fish): 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 Betta (Siamese Fighting Fish)