Can Swordtail Live With Silver Dollar Fish?
Swordtail and Silver Dollar Fish are compatible. Temperature overlap 75–82°F. Both peaceful.
Conditions: Minimum 55 gallon tank.
Parameter Comparison
| Parameter | Swordtail | Silver Dollar Fish | Overlap |
|---|---|---|---|
| Temperature | 72–82°F | 75–82°F | 75–82°F ✓ |
| pH Range | 7–8.4 | 5.5–7.5 | 7–7.5 ✓ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 5.5" | 6" | Similar ✓ |
| Min Tank Size | 20 gal | 55 gal | 55 gal minimum together |
| Diet | Omnivore | Herbivore | — |
| Care Level | beginner | intermediate | — |
Tank Requirements for Swordtail + Silver Dollar Fish
To keep Swordtail and Silver Dollar Fish together, you need at minimum a 55 gallon tank. Swordtail should be kept in a school of 3+. 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
Swordtail
Xiphophorus hellerii
Swordtails are hardy, colorful livebearers named for the distinctive elongated lower tail fin (the 'sword') found on males. They come in many color varieties including red, pineapple, marigold, and tuxedo. Larger than guppies but just as easy to care for, swordtails are excellent community fish that prefer hard, alkaline water.
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 →