Can black neon tetras live with pygmy corys?

Verdict
Yes

Yes, black neon tetras and pygmy corys can live together. Both are fine at 73–79°F. Plan on at least 15 gal.

Black neon tetraBlack neon tetra73–81°F · pH 5.5–7.5 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°Black neon tetra 73–81°Pygmy cory 72–79°
The green band is the temperature range both can live in.
456789Both: 6–7.5Black neon tetra 5.5–7.5Pygmy cory 6–7.5
The green band is the pH both tolerate.

Size to scale

Black neon tetra · 1.5 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 neon tetraPygmy cory
Temperature73–81 °F72–79 °F
pH5.5–7.56–7.5
Adult size1.5 in1.0 in
Minimum tank15 gal10 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for black neon tetras

All black neon tetra tank mates

Better tank mates for pygmy corys

All pygmy cory tank mates

Questions

Can black neon tetras live with pygmy corys?

Yes, black neon tetras and pygmy corys can live together. Both are fine at 73–79°F. Plan on at least 15 gal.

What temperature suits both black neon tetras and pygmy corys?

73–79 °F. Black neon tetras need 73–81 °F, pygmy corys need 72–79 °F.

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

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