Can Oscar Fish Live With Silver Dollar Fish?
Oscar Fish and Silver Dollar Fish are compatible. Temperature overlap 75–81°F.
Conditions: Minimum 75 gallon tank.
Parameter Comparison
| Parameter | Oscar Fish | Silver Dollar Fish | Overlap |
|---|---|---|---|
| Temperature | 74–81°F | 75–82°F | 75–81°F ✓ |
| pH Range | 6–8 | 5.5–7.5 | 6–7.5 ✓ |
| Temperament | aggressive | peaceful | Aggression risk ✗ |
| Max Size | 14" | 6" | Similar ✓ |
| Min Tank Size | 75 gal | 55 gal | 75 gal minimum together |
| Diet | Carnivore | Herbivore | — |
| Care Level | intermediate | intermediate | — |
Tank Requirements for Oscar Fish + Silver Dollar Fish
To keep Oscar Fish and Silver Dollar Fish together, you need at minimum a 75 gallon tank. Silver Dollar Fish should be kept in a school of 5+. Provide adequate filtration, stable temperature with a heater, and hiding spots to reduce stress.
Species Profiles
Oscar Fish
Astronotus ocellatus
Oscars are large, intelligent South American cichlids often called 'water dogs' for their interactive personality. They recognize their owners, beg for food, and can be hand-fed. However, they grow fast, produce massive waste, and need at least a 75-gallon tank.
Full care guide →Silver Dollar Fish
Metynnis hypsauchen
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 →