Can fancy goldfish live with silver dollars?

Verdict

No. Fancy goldfish and silver dollars should not share a tank. Fancy goldfish are coldwater animals (65–74°F); silver dollars need 75–82°F. No temperature suits both.

Fancy goldfish65–74°F · pH 7–8

Silver dollar75–82°F · pH 5–7

What to watch

Deal breakerFancy goldfish are coldwater animals (65–74°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

	Fancy goldfish	Silver dollar
Temperature	65–74 °F	75–82 °F
pH	7–8	5–7
Adult size	6.0 in	6.0 in
Minimum tank	30 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 fancy goldfish

All fancy goldfish tank mates

Better tank mates for silver dollars

All silver dollar tank mates

Questions

Can fancy goldfish live with silver dollars?

No. Fancy goldfish and silver dollars should not share a tank. Fancy goldfish are coldwater animals (65–74°F); silver dollars need 75–82°F. No temperature suits both.

What temperature suits both fancy goldfish and silver dollars?

None. Fancy goldfish need 65–74 °F and silver dollars need 75–82 °F, so the ranges do not meet.

What size tank do fancy goldfish and silver dollars need together?

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