Can goldfish live with fancy goldfish?

Verdict
Yes

Yes. Goldfish and fancy goldfish get along in the same tank. Both are fine at 65–74°F. Plan on at least 40 gal.

GoldfishGoldfish60–74°F · pH 7–8 Fancy goldfishFancy goldfish65–74°F · pH 7–8

Why it works

Water side by side

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

Size to scale

Goldfish · 10 inFancy goldfish · 6 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

GoldfishFancy goldfish
Temperature60–74 °F65–74 °F
pH7–87–8
Adult size10.0 in6.0 in
Minimum tank40 gal30 gal
TemperamentPeacefulPeaceful
Swims atAll levelsAll levels
GroupAlone or in pairsAlone or in pairs
DietOmnivoreOmnivore

Better tank mates for goldfish

All goldfish tank mates

Better tank mates for fancy goldfish

All fancy goldfish tank mates

Questions

Can goldfish live with fancy goldfish?

Yes. Goldfish and fancy goldfish get along in the same tank. Both are fine at 65–74°F. Plan on at least 40 gal.

What temperature suits both goldfish and fancy goldfish?

65–74 °F. Goldfish need 60–74 °F, fancy goldfish need 65–74 °F.

What size tank do goldfish and fancy goldfish need together?

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