Can Congo Tetra Live With Silver Dollar Fish?
Congo Tetra and Silver Dollar Fish are compatible. Temperature overlap 75–82°F. Both peaceful.
Conditions: Minimum 55 gallon tank.
Parameter Comparison
| Parameter | Congo Tetra | Silver Dollar Fish | Overlap |
|---|---|---|---|
| Temperature | 73–82°F | 75–82°F | 75–82°F ✓ |
| pH Range | 6–7.5 | 5.5–7.5 | 6–7.5 ✓ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 3.5" | 6" | Similar ✓ |
| Min Tank Size | 30 gal | 55 gal | 55 gal minimum together |
| Diet | Omnivore | Herbivore | — |
| Care Level | intermediate | intermediate | — |
Tank Requirements for Congo Tetra + Silver Dollar Fish
To keep Congo Tetra and Silver Dollar Fish together, you need at minimum a 55 gallon tank. Congo 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
Congo Tetra
Phenacogrammus interruptus
Congo tetras are the showstoppers of the tetra family. Males develop spectacular flowing fins with an iridescent rainbow sheen that shifts from blue to gold to green under aquarium lighting. They are larger than most tetras (up to 3.5 inches) and need a spacious, well-planted tank to display their full beauty. Peaceful but shy — they thrive with calm tank mates.
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 →