Can corydoras live with pygmy corys?

Verdict
Yes

Yes, corydoras and pygmy corys can live together. Both are fine at 72–79°F. Plan on at least 20 gal.

CorydorasCorydoras72–79°F · pH 6–7.8 Pygmy coryPygmy cory72–79°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–79°Corydoras 72–79°Pygmy cory 72–79°
The green band is the temperature range both can live in.
456789Both: 6–7.5Corydoras 6–7.8Pygmy cory 6–7.5
The green band is the pH both tolerate.

Size to scale

Corydoras · 2.5 inPygmy cory · 1 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

CorydorasPygmy cory
Temperature72–79 °F72–79 °F
pH6–7.86–7.5
Adult size2.5 in1.0 in
Minimum tank20 gal10 gal
TemperamentPeacefulPeaceful
Swims atBottomMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for corydoras

All corydoras tank mates

Better tank mates for pygmy corys

All pygmy cory tank mates

Questions

Can corydoras live with pygmy corys?

Yes, corydoras and pygmy corys can live together. Both are fine at 72–79°F. Plan on at least 20 gal.

What temperature suits both corydoras and pygmy corys?

72–79 °F. Corydoras need 72–79 °F, pygmy corys need 72–79 °F.

What size tank do corydoras and pygmy corys need together?

At least 20 gal, set by the corydoras. Add space for each extra fish.