Can black skirt tetras live with blue gouramis?

Verdict
Yes

Yes. Black skirt tetras and blue gouramis get along in the same tank. Both are fine at 72–80°F. Plan on at least 30 gal.

Black skirt tetraBlack skirt tetra70–80°F · pH 6–7.5 Blue gouramiBlue gourami72–82°F · pH 6–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–80°Black skirt tetra 70–80°Blue gourami 72–82°
The green band is the temperature range both can live in.
456789Both: 6–7.5Black skirt tetra 6–7.5Blue gourami 6–8
The green band is the pH both tolerate.

Size to scale

Black skirt tetra · 2.5 inBlue gourami · 5 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 tetraBlue gourami
Temperature70–80 °F72–82 °F
pH6–7.56–8
Adult size2.5 in5.0 in
Minimum tank15 gal30 gal
TemperamentSemi-aggressiveSemi-aggressive
Swims atMiddleTop
GroupGroups of 6+Alone or in pairs
DietOmnivoreOmnivore

Better tank mates for black skirt tetras

All black skirt tetra tank mates

Better tank mates for blue gouramis

All blue gourami tank mates

Questions

Can black skirt tetras live with blue gouramis?

Yes. Black skirt tetras and blue gouramis get along in the same tank. Both are fine at 72–80°F. Plan on at least 30 gal.

What temperature suits both black skirt tetras and blue gouramis?

72–80 °F. Black skirt tetras need 70–80 °F, blue gouramis need 72–82 °F.

What size tank do black skirt tetras and blue gouramis need together?

At least 30 gal, set by the blue gourami. Add space for each extra fish.