Can Silver Dollar Fish Live With Yellow Tang?
Incompatible pH. Silver Dollar Fish needs 5.5–7.5, Yellow Tang needs 8.1–8.4.
Parameter Comparison
| Parameter | Silver Dollar Fish | Yellow Tang | Overlap |
|---|---|---|---|
| Temperature | 75–82°F | 75–82°F | 75–82°F ✓ |
| pH Range | 5.5–7.5 | 8.1–8.4 | No overlap ✗ |
| Temperament | peaceful | semi-aggressive | Monitor ⚠ |
| Max Size | 6" | 8" | Similar ✓ |
| Min Tank Size | 55 gal | 75 gal | 75 gal minimum together |
| Diet | Herbivore | Herbivore | — |
| Care Level | intermediate | intermediate | — |
Species Profiles
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 →Yellow Tang
Zebrasoma flavescens
The yellow tang is the most iconic reef tank fish — a solid lemon-yellow disc that constantly grazes algae across the rock work. They are active, hardy, and excellent algae controllers for reef tanks. However, they need large tanks (75+ gallons minimum), can be aggressive toward similar-shaped fish, and have become significantly more expensive following collection bans in Hawaii.
Full care guide →