Can Betta (Siamese Fighting Fish) live with Red-Line Rasbora?
Light caution
Why
- Betta (Siamese Fighting Fish) is semi-aggressive — give the peaceful Red-Line Rasbora plenty of space, cover and broken sight lines.
Sweet spot: both do well at 76–81°F and pH 6–7 — aim there.
Side-by-side
| Betta (Siamese Fighting Fish) | Red-Line Rasbora | |
|---|---|---|
| Temperature | 76–82°F | 73–81°F |
| pH | 6–7.5 | 5–7 |
| Hardness (GH) | 2–12 dGH | 1–8 dGH |
| Adult size | 2.5" | 1.75" |
| Temperament | Semi-aggressive | Peaceful |
| Min tank | 5 gal | 15 gal |
Together, plan on at least 15 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: GH remineraliser
Design the whole tank, not just the stocking
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Design a tank with Betta (Siamese Fighting Fish), Red-Line Rasbora →Everything compatible with Betta (Siamese Fighting Fish) · …with Red-Line Rasbora