Can Betta (male) live with Red Swordtail? With caution
Aggressive plus semi-aggressive pairing — watch for territorial disputes.
Side by side
| 🐟 Betta (male) | 🐠 Red Swordtail | |
| Adult size | 2.8" | 5.5" |
| Min tank | 5 gal | 20 gal |
| Temperature | 76–82°F | 72–82°F |
| pH | 6–7.5 | 7–8.4 |
| Temperament | Aggressive | Semi-aggressive |
How to make it work
- Aggressive plus semi-aggressive pairing — watch for territorial disputes.
- Provide ample swimming space, sight breaks, and matched water parameters.