Can Molly Live With Silver Dollar Fish?
Molly and Silver Dollar Fish are compatible. Temperature overlap 75–82°F. Both peaceful.
Conditions: Minimum 55 gallon tank.
Parameter Comparison
| Parameter | Molly | Silver Dollar Fish | Overlap |
|---|---|---|---|
| Temperature | 72–82°F | 75–82°F | 75–82°F ✓ |
| pH Range | 7–8.5 | 5.5–7.5 | 7–7.5 ✓ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 4.5" | 6" | Similar ✓ |
| Min Tank Size | 20 gal | 55 gal | 55 gal minimum together |
| Diet | Omnivore | Herbivore | — |
| Care Level | beginner | intermediate | — |
Tank Requirements for Molly + Silver Dollar Fish
To keep Molly and Silver Dollar Fish together, you need at minimum a 55 gallon tank. Molly should be kept in a school of 4+. 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
Molly
Poecilia sphenops
Mollies are versatile livebearers that come in many varieties including black, dalmatian, balloon, and sailfin. They prefer hard, alkaline water and can even tolerate brackish conditions. They are active, personable fish that breed easily.
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 →