Can Silver Dollar Fish Live With Silver Arowana?
❌Not Compatible
Silver Arowana is aggressive and will likely attack or stress tank mates.
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Parameter Comparison
| Parameter | Silver Dollar Fish | Silver Arowana | Overlap |
|---|---|---|---|
| Temperature | 75–82°F | 75–82°F | 75–82°F ✓ |
| pH Range | 5.5–7.5 | 6–7.5 | 6–7.5 ✓ |
| Temperament | peaceful | aggressive | Aggression risk ✗ |
| Max Size | 6" | 36" | Size mismatch ✗ |
| Min Tank Size | 55 gal | 125 gal | 125 gal minimum together |
| Diet | Herbivore | Carnivore | — |
| Care Level | intermediate | advanced | — |
Species Profiles
Silver Dollar Fish
Metynnis hypsauchen
intermediatepeaceful55+ gal
Silver dollars are large, disc-shaped, peaceful schooling fish related to piranhas — but entirely herbivorous. Their shimmering silver body catches light beautifully in motion. They are excellent dither fish for large cichlid tanks because their calm, open-water swimming behavior helps reduce cichlid aggression. Warning: they will eat every live plant in your tank.
Full care guide →Silver Arowana
Osteoglossum bicirrhosum
advancedaggressive125+ gal
The Silver Arowana (Osteoglossum bicirrhosum) is a advanced-level freshwater fish growing to 36 inches. Aggressive temperament, minimum 125 gallon tank.
Full care guide →Other Compatible Tank Mates
For Silver Dollar Fish:
For Silver Arowana:
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