Can fancy goldfish live with bolivian rams?

Verdict
No

No. Fancy goldfish and bolivian rams should not share a tank. Fancy goldfish are coldwater animals (65–74°F); bolivian rams need 72–79°F. They overlap only at 72–74°F, the edge of both ranges.

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–74°Fancy goldfish 65–74°Bolivian ram 72–79°
The green band is the temperature range both can live in.
456789Both: 7–7.5Fancy goldfish 7–8Bolivian ram 6–7.5
The green band is the pH both tolerate.

Size to scale

Fancy goldfish · 6 inBolivian ram · 3 in0"1"2"3"4"5"6"
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 goldfishBolivian ram
Temperature65–74 °F72–79 °F
pH7–86–7.5
Adult size6.0 in3.0 in
Minimum tank30 gal20 gal
TemperamentPeacefulPeaceful
Swims atAll levelsBottom
GroupAlone or in pairsAlone or in pairs
DietOmnivoreOmnivore

Better tank mates for fancy goldfish

All fancy goldfish tank mates

Better tank mates for bolivian rams

All bolivian ram tank mates

Questions

Can fancy goldfish live with bolivian rams?

No. Fancy goldfish and bolivian rams should not share a tank. Fancy goldfish are coldwater animals (65–74°F); bolivian rams need 72–79°F. They overlap only at 72–74°F, the edge of both ranges.

What temperature suits both fancy goldfish and bolivian rams?

72–74 °F. Fancy goldfish need 65–74 °F, bolivian rams need 72–79 °F.

What size tank do fancy goldfish and bolivian rams need together?

At least 30 gal, set by the fancy goldfish. Add space for each extra fish.