Can goldfish live with rams?

Verdict
No

No. Goldfish and rams should not share a tank. Goldfish are coldwater animals (60–74°F); rams need 80–86°F. No temperature suits both.

What to watch

Water side by side

55°60°65°70°75°80°85°90°Goldfish 60–74°German blue ram 80–86°
The ranges do not meet, so one of them would always be too warm or too cold.
456789Both: 7Goldfish 7–8German blue ram 5–7
The green band is the pH both tolerate.

Size to scale

Goldfish · 10 inGerman blue ram · 2.5 in0"2"4"6"8"10"
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

GoldfishGerman blue ram
Temperature60–74 °F80–86 °F
pH7–85–7
Adult size10.0 in2.5 in
Minimum tank40 gal20 gal
TemperamentPeacefulPeaceful
Swims atAll levelsBottom
GroupAlone or in pairsAlone or in pairs
DietOmnivoreOmnivore

Better tank mates for goldfish

All goldfish tank mates

Better tank mates for rams

All german blue ram tank mates

Questions

Can goldfish live with rams?

No. Goldfish and rams should not share a tank. Goldfish are coldwater animals (60–74°F); rams need 80–86°F. No temperature suits both.

What temperature suits both goldfish and rams?

None. Goldfish need 60–74 °F and rams need 80–86 °F, so the ranges do not meet.

What size tank do goldfish and rams need together?

At least 40 gal, set by the goldfish. Add space for each extra fish.