Can Betta (Siamese Fighting Fish) live with Axelrod's Rasbora?
Caution — with care
Why
- Very different sizes (Betta (Siamese Fighting Fish) 2.5" vs Axelrod's Rasbora 0.6") — these two need different tanks, and the smaller fish will be out-competed at feeding time.
- Betta (Siamese Fighting Fish) is semi-aggressive — give the peaceful Axelrod's Rasbora plenty of space, cover and broken sight lines.
Sweet spot: both do well at 76–79°F and pH 6–6.5 — aim there.
Side-by-side
| Betta (Siamese Fighting Fish) | Axelrod's Rasbora | |
|---|---|---|
| Temperature | 76–82°F | 72–79°F |
| pH | 6–7.5 | 4–6.5 |
| Hardness (GH) | 2–12 dGH | 1–6 dGH |
| Adult size | 2.5" | 0.6" |
| Temperament | Semi-aggressive | Peaceful |
| Min tank | 5 gal | 10 gal |
Together, plan on at least 10 gallons.
How to make it work
- 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: A larger tank · GH remineraliser
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Design a tank with Betta (Siamese Fighting Fish), Axelrod's Rasbora →Everything compatible with Betta (Siamese Fighting Fish) · …with Axelrod's Rasbora