Can goldfish live with arowanas?
Verdict
No
No. Goldfish and arowanas should not share a tank. Goldfish are coldwater animals (60–74°F); arowanas need 75–86°F. No temperature suits both.
What to watch
- Deal breakerGoldfish are coldwater animals (60–74°F); arowanas need 75–86°F. No temperature suits both.
- Deal breakerAn adult silver arowana eats fish that fit in its mouth, and at 10 inches goldfish do.
- Deal breakerArowanas are aggressive and will bully peaceful goldfish.
- Watch outWater chemistry is a squeeze. The only pH that suits both is around 7.
- Watch outArowanas grow to 36 inches and need 250 gallons, far more than a tank set up for goldfish.
Water side by side
Size to scale
Care at a glance
| Goldfish | Silver arowana | |
|---|---|---|
| Temperature | 60–74 °F | 75–86 °F |
| pH | 7–8 | 6–7 |
| Adult size | 10.0 in | 36.0 in |
| Minimum tank | 40 gal | 250 gal |
| Temperament | Peaceful | Aggressive |
| Swims at | All levels | Top |
| Group | Alone or in pairs | One per tank |
| Diet | Omnivore | Carnivore |
Better tank mates for goldfish
Questions
Can goldfish live with arowanas?
No. Goldfish and arowanas should not share a tank. Goldfish are coldwater animals (60–74°F); arowanas need 75–86°F. No temperature suits both.
What temperature suits both goldfish and arowanas?
None. Goldfish need 60–74 °F and arowanas need 75–86 °F, so the ranges do not meet.
What size tank do goldfish and arowanas need together?
At least 250 gal, set by the silver arowana. Add space for each extra fish.