Can bristlenose plecos live with black skirt tetras?

Verdict
Yes

Yes. Bristlenose plecos and black skirt tetras make a good pair. Both are fine at 73–80°F. Plan on at least 30 gal.

Bristlenose plecoBristlenose pleco73–81°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: 73–80°Bristlenose pleco 73–81°Black skirt tetra 70–80°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Bristlenose pleco 6.5–7.5Black skirt tetra 6–7.5
The green band is the pH both tolerate.

Size to scale

Bristlenose pleco · 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

Bristlenose plecoBlack skirt tetra
Temperature73–81 °F70–80 °F
pH6.5–7.56–7.5
Adult size5.0 in2.5 in
Minimum tank30 gal15 gal
TemperamentPeacefulSemi-aggressive
Swims atBottomMiddle
GroupAlone or in pairsGroups of 6+
DietHerbivoreOmnivore

Better tank mates for bristlenose plecos

All bristlenose pleco tank mates

Better tank mates for black skirt tetras

All black skirt tetra tank mates

Questions

Can bristlenose plecos live with black skirt tetras?

Yes. Bristlenose plecos and black skirt tetras make a good pair. Both are fine at 73–80°F. Plan on at least 30 gal.

What temperature suits both bristlenose plecos and black skirt tetras?

73–80 °F. Bristlenose plecos need 73–81 °F, black skirt tetras need 70–80 °F.

What size tank do bristlenose plecos and black skirt tetras need together?

At least 30 gal, set by the bristlenose pleco. Add space for each extra fish.