Can glass catfish live with black skirt tetras?

Verdict
Yes

Yes. Glass catfish and black skirt tetras make a good pair. Both are fine at 75–80°F. Plan on at least 30 gal.

Glass catfishGlass catfish75–80°F · pH 6.5–7.5 Black skirt tetraBlack skirt tetra70–80°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–80°Glass catfish 75–80°Black skirt tetra 70–80°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Glass catfish 6.5–7.5Black skirt tetra 6–7.5
The green band is the pH both tolerate.

Size to scale

Glass catfish · 3 inBlack skirt tetra · 2.5 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

Glass catfishBlack skirt tetra
Temperature75–80 °F70–80 °F
pH6.5–7.56–7.5
Adult size3.0 in2.5 in
Minimum tank30 gal15 gal
TemperamentPeacefulSemi-aggressive
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietCarnivoreOmnivore

Better tank mates for glass catfish

All glass catfish tank mates

Better tank mates for black skirt tetras

All black skirt tetra tank mates

Questions

Can glass catfish live with black skirt tetras?

Yes. Glass catfish and black skirt tetras make a good pair. Both are fine at 75–80°F. Plan on at least 30 gal.

What temperature suits both glass catfish and black skirt tetras?

75–80 °F. Glass catfish need 75–80 °F, black skirt tetras need 70–80 °F.

What size tank do glass catfish and black skirt tetras need together?

At least 30 gal, set by the glass catfish. Add space for each extra fish.