Can congo tetras live with pygmy corys?

Verdict
Yes

Yes. Congo tetras and pygmy corys get along in the same tank. Both are fine at 73–79°F. Plan on at least 30 gal.

Congo tetraCongo tetra73–82°F · pH 6–7.5 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: 73–79°Congo tetra 73–82°Pygmy cory 72–79°
The green band is the temperature range both can live in.
456789Both: 6–7.5Congo tetra 6–7.5Pygmy cory 6–7.5
The green band is the pH both tolerate.

Size to scale

Congo tetra · 3 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

Congo tetraPygmy cory
Temperature73–82 °F72–79 °F
pH6–7.56–7.5
Adult size3.0 in1.0 in
Minimum tank30 gal10 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for congo tetras

All congo tetra tank mates

Better tank mates for pygmy corys

All pygmy cory tank mates

Questions

Can congo tetras live with pygmy corys?

Yes. Congo tetras and pygmy corys get along in the same tank. Both are fine at 73–79°F. Plan on at least 30 gal.

What temperature suits both congo tetras and pygmy corys?

73–79 °F. Congo tetras need 73–82 °F, pygmy corys need 72–79 °F.

What size tank do congo tetras and pygmy corys need together?

At least 30 gal, set by the congo tetra. Add space for each extra fish.