Can silver dollars live with zebra loaches?

Verdict
Yes

Yes. Silver dollars and zebra loaches get along in the same tank. Both are fine at 75–79°F. Plan on at least 75 gal.

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–79°Silver dollar 75–82°Zebra loach 73–79°
The green band is the temperature range both can live in.
456789Both: 6–7Silver dollar 5–7Zebra loach 6–7.5
The green band is the pH both tolerate.

Size to scale

Silver dollar · 6 inZebra loach · 3.5 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

Silver dollarZebra loach
Temperature75–82 °F73–79 °F
pH5–76–7.5
Adult size6.0 in3.5 in
Minimum tank75 gal30 gal
TemperamentPeacefulPeaceful
Swims atMiddleBottom
GroupGroups of 5+Groups of 5+
DietHerbivoreOmnivore

Better tank mates for silver dollars

All silver dollar tank mates

Better tank mates for zebra loaches

All zebra loach tank mates

Questions

Can silver dollars live with zebra loaches?

Yes. Silver dollars and zebra loaches get along in the same tank. Both are fine at 75–79°F. Plan on at least 75 gal.

What temperature suits both silver dollars and zebra loaches?

75–79 °F. Silver dollars need 75–82 °F, zebra loaches need 73–79 °F.

What size tank do silver dollars and zebra loaches need together?

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