Can pictus catfish live with black skirt tetras?

Verdict
Yes

Yes, pictus catfish and black skirt tetras can live together. Both are fine at 72–79°F. Plan on at least 55 gal.

Pictus catfishPictus catfish72–79°F · pH 6–7.5 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: 72–79°Pictus catfish 72–79°Black skirt tetra 70–80°
The green band is the temperature range both can live in.
456789Both: 6–7.5Pictus catfish 6–7.5Black skirt tetra 6–7.5
The green band is the pH both tolerate.

Size to scale

Pictus catfish · 5 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

Pictus catfishBlack skirt tetra
Temperature72–79 °F70–80 °F
pH6–7.56–7.5
Adult size5.0 in2.5 in
Minimum tank55 gal15 gal
TemperamentSemi-aggressiveSemi-aggressive
Swims atBottomMiddle
GroupGroups of 3+Groups of 6+
DietCarnivoreOmnivore

Better tank mates for pictus catfish

All pictus catfish tank mates

Better tank mates for black skirt tetras

All black skirt tetra tank mates

Questions

Can pictus catfish live with black skirt tetras?

Yes, pictus catfish and black skirt tetras can live together. Both are fine at 72–79°F. Plan on at least 55 gal.

What temperature suits both pictus catfish and black skirt tetras?

72–79 °F. Pictus catfish need 72–79 °F, black skirt tetras need 70–80 °F.

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

At least 55 gal, set by the pictus catfish. Add space for each extra fish.