Can plecos live with black skirt tetras?

Verdict
Yes, with care

Yes, with care. Plecos and black skirt tetras can share a tank, but watch one thing. Plecos grow to 15 inches and need 125 gallons, far more than a tank set up for black skirt tetras.

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–80°Common pleco 72–86°Black skirt tetra 70–80°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Common pleco 6.5–7.5Black skirt tetra 6–7.5
The green band is the pH both tolerate.

Size to scale

Common pleco · 15 inBlack skirt tetra · 2.5 in0"2"4"6"8"10"12"14"
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

Common plecoBlack skirt tetra
Temperature72–86 °F70–80 °F
pH6.5–7.56–7.5
Adult size15.0 in2.5 in
Minimum tank125 gal15 gal
TemperamentPeacefulSemi-aggressive
Swims atBottomMiddle
GroupAlone or in pairsGroups of 6+
DietHerbivoreOmnivore

Better tank mates for plecos

All common pleco tank mates

Better tank mates for black skirt tetras

All black skirt tetra tank mates

Questions

Can plecos live with black skirt tetras?

Yes, with care. Plecos and black skirt tetras can share a tank, but watch one thing. Plecos grow to 15 inches and need 125 gallons, far more than a tank set up for black skirt tetras.

What temperature suits both plecos and black skirt tetras?

72–80 °F. Plecos need 72–86 °F, black skirt tetras need 70–80 °F.

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

At least 125 gal, set by the common pleco. Add space for each extra fish.