Can bettas live with arowanas?
Verdict
No
No. Bettas and arowanas should not share a tank. An adult silver arowana eats fish that fit in its mouth, and at 2.5 inches bettas do.
What to watch
- Deal breakerAn adult silver arowana eats fish that fit in its mouth, and at 2.5 inches bettas do.
- Deal breakerArowanas are aggressive, and slow, long-finned bettas cannot escape them.
- Watch outArowanas grow to 36 inches and need 250 gallons, far more than a tank set up for bettas.
What works
- Both are fine at 76–82°F.
- pH 6.5–7 suits both.
Water side by side
Size to scale
Care at a glance
| Betta | Silver arowana | |
|---|---|---|
| Temperature | 76–82 °F | 75–86 °F |
| pH | 6.5–7.5 | 6–7 |
| Adult size | 2.5 in | 36.0 in |
| Minimum tank | 5 gal | 250 gal |
| Temperament | Semi-aggressive | Aggressive |
| Swims at | Top | Top |
| Group | One per tank | One per tank |
| Diet | Carnivore | Carnivore |
Better tank mates for bettas
Questions
Can bettas live with arowanas?
No. Bettas and arowanas should not share a tank. An adult silver arowana eats fish that fit in its mouth, and at 2.5 inches bettas do.
What temperature suits both bettas and arowanas?
76–82 °F. Bettas need 76–82 °F, arowanas need 75–86 °F.
What size tank do bettas and arowanas need together?
At least 250 gal, set by the silver arowana. Add space for each extra fish.