Can corydoras live with dojo loaches?

Verdict
Yes

Yes. Corydoras and dojo loaches get along in the same tank. Both are fine at 72–77°F. Plan on at least 55 gal.

CorydorasCorydoras72–79°F · pH 6–7.8 Dojo loachDojo loach59–77°F · pH 6.5–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–77°Corydoras 72–79°Dojo loach 59–77°
The green band is the temperature range both can live in.
456789Both: 6.5–7.8Corydoras 6–7.8Dojo loach 6.5–8
The green band is the pH both tolerate.

Size to scale

Corydoras · 2.5 inDojo loach · 6 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

CorydorasDojo loach
Temperature72–79 °F59–77 °F
pH6–7.86.5–8
Adult size2.5 in6.0 in
Minimum tank20 gal55 gal
TemperamentPeacefulPeaceful
Swims atBottomBottom
GroupGroups of 6+Groups of 3+
DietOmnivoreOmnivore

Better tank mates for corydoras

All corydoras tank mates

Better tank mates for dojo loaches

All dojo loach tank mates

Questions

Can corydoras live with dojo loaches?

Yes. Corydoras and dojo loaches get along in the same tank. Both are fine at 72–77°F. Plan on at least 55 gal.

What temperature suits both corydoras and dojo loaches?

72–77 °F. Corydoras need 72–79 °F, dojo loaches need 59–77 °F.

What size tank do corydoras and dojo loaches need together?

At least 55 gal, set by the dojo loach. Add space for each extra fish.