Can goldfish live with silver dollars?

Verdict

No. Goldfish and silver dollars should not share a tank. Goldfish are coldwater animals (60–74°F); silver dollars need 75–82°F. No temperature suits both.

Goldfish60–74°F · pH 7–8

Silver dollar75–82°F · pH 5–7

What to watch

Deal breakerGoldfish are coldwater animals (60–74°F); silver dollars need 75–82°F. No temperature suits both.
Watch outWater chemistry is a squeeze. The only pH that suits both is around 7.

Water side by side

The ranges do not meet, so one of them would always be too warm or too cold.

The green band is the pH both tolerate.

Size to scale

Adult length in an aquarium. A fish can swallow anything that fits in its mouth, roughly a third to half its own length for predators.

Care at a glance

	Goldfish	Silver dollar
Temperature	60–74 °F	75–82 °F
pH	7–8	5–7
Adult size	10.0 in	6.0 in
Minimum tank	40 gal	75 gal
Temperament	Peaceful	Peaceful
Swims at	All levels	Middle
Group	Alone or in pairs	Groups of 5+
Diet	Omnivore	Herbivore

Better tank mates for goldfish

All goldfish tank mates

Better tank mates for silver dollars

All silver dollar tank mates

Questions

Can goldfish live with silver dollars?

No. Goldfish and silver dollars should not share a tank. Goldfish are coldwater animals (60–74°F); silver dollars need 75–82°F. No temperature suits both.

What temperature suits both goldfish and silver dollars?

None. Goldfish need 60–74 °F and silver dollars need 75–82 °F, so the ranges do not meet.

What size tank do goldfish and silver dollars need together?

At least 75 gal, set by the silver dollar. Add space for each extra fish.