Can Cardinal Tetra Live With Silver Dollar Fish?
Cardinal Tetra and Silver Dollar Fish are compatible. Temperature overlap 75–81°F. Both peaceful.
Conditions: Minimum 55 gallon tank.
Parameter Comparison
| Parameter | Cardinal Tetra | Silver Dollar Fish | Overlap |
|---|---|---|---|
| Temperature | 73–81°F | 75–82°F | 75–81°F ✓ |
| pH Range | 4.5–7 | 5.5–7.5 | 5.5–7 ✓ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 2" | 6" | Similar ✓ |
| Min Tank Size | 10 gal | 55 gal | 55 gal minimum together |
| Diet | Omnivore | Herbivore | — |
| Care Level | intermediate | intermediate | — |
Tank Requirements for Cardinal Tetra + Silver Dollar Fish
To keep Cardinal Tetra and Silver Dollar Fish together, you need at minimum a 55 gallon tank. Cardinal Tetra should be kept in a school of 6+. 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
Cardinal Tetra
Paracheirodon axelrodi
Cardinal tetras look similar to neon tetras but have a red stripe that extends the entire length of their body (vs only the back half in neons). They prefer softer, more acidic water and are slightly more delicate, but their deeper coloration makes them highly sought after.
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 →