Can black skirt tetras live with pygmy corys?

Verdict
Yes

Yes. Black skirt tetras and pygmy corys get along in the same tank. Both are fine at 72–79°F. Plan on at least 15 gal.

Black skirt tetraBlack skirt tetra70–80°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: 72–79°Black skirt tetra 70–80°Pygmy cory 72–79°
The green band is the temperature range both can live in.
456789Both: 6–7.5Black skirt tetra 6–7.5Pygmy cory 6–7.5
The green band is the pH both tolerate.

Size to scale

Black skirt tetra · 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

Black skirt tetraPygmy cory
Temperature70–80 °F72–79 °F
pH6–7.56–7.5
Adult size2.5 in1.0 in
Minimum tank15 gal10 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for black skirt tetras

All black skirt tetra tank mates

Better tank mates for pygmy corys

All pygmy cory tank mates

Questions

Can black skirt tetras live with pygmy corys?

Yes. Black skirt tetras and pygmy corys get along in the same tank. Both are fine at 72–79°F. Plan on at least 15 gal.

What temperature suits both black skirt tetras and pygmy corys?

72–79 °F. Black skirt tetras need 70–80 °F, pygmy corys need 72–79 °F.

What size tank do black skirt tetras and pygmy corys need together?

At least 15 gal, set by the black skirt tetra. Add space for each extra fish.