Can rams live with arowanas?
Verdict
No
No. Rams and arowanas should not share a tank. An adult silver arowana eats fish that fit in its mouth, and at 2.5 inches rams do.
What to watch
- Deal breakerAn adult silver arowana eats fish that fit in its mouth, and at 2.5 inches rams do.
- Deal breakerArowanas are aggressive and will bully peaceful rams.
- Watch outArowanas grow to 36 inches and need 250 gallons, far more than a tank set up for rams.
What works
- Both are fine at 80–86°F.
- pH 6–7 suits both.
- They use different parts of the tank: rams the bottom, arowanas the top.
Water side by side
Size to scale
Care at a glance
| German blue ram | Silver arowana | |
|---|---|---|
| Temperature | 80–86 °F | 75–86 °F |
| pH | 5–7 | 6–7 |
| Adult size | 2.5 in | 36.0 in |
| Minimum tank | 20 gal | 250 gal |
| Temperament | Peaceful | Aggressive |
| Swims at | Bottom | Top |
| Group | Alone or in pairs | One per tank |
| Diet | Omnivore | Carnivore |
Better tank mates for rams
All german blue ram tank mates
Questions
Can rams live with arowanas?
No. Rams and arowanas should not share a tank. An adult silver arowana eats fish that fit in its mouth, and at 2.5 inches rams do.
What temperature suits both rams and arowanas?
80–86 °F. Rams need 80–86 °F, arowanas need 75–86 °F.
What size tank do rams and arowanas need together?
At least 250 gal, set by the silver arowana. Add space for each extra fish.







