Can black skirt tetras live with paradise fish?

Verdict
Yes

Yes. Black skirt tetras and paradise fish make a good pair. Both are fine at 70–79°F. Plan on at least 20 gal.

Black skirt tetraBlack skirt tetra70–80°F · pH 6–7.5 Paradise fishParadise fish61–79°F · pH 6–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 70–79°Black skirt tetra 70–80°Paradise fish 61–79°
The green band is the temperature range both can live in.
456789Both: 6–7.5Black skirt tetra 6–7.5Paradise fish 6–8
The green band is the pH both tolerate.

Size to scale

Black skirt tetra · 2.5 inParadise fish · 3.5 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 tetraParadise fish
Temperature70–80 °F61–79 °F
pH6–7.56–8
Adult size2.5 in3.5 in
Minimum tank15 gal20 gal
TemperamentSemi-aggressiveSemi-aggressive
Swims atMiddleTop
GroupGroups of 6+One per tank
DietOmnivoreOmnivore

Better tank mates for black skirt tetras

All black skirt tetra tank mates

Better tank mates for paradise fish

All paradise fish tank mates

Questions

Can black skirt tetras live with paradise fish?

Yes. Black skirt tetras and paradise fish make a good pair. Both are fine at 70–79°F. Plan on at least 20 gal.

What temperature suits both black skirt tetras and paradise fish?

70–79 °F. Black skirt tetras need 70–80 °F, paradise fish need 61–79 °F.

What size tank do black skirt tetras and paradise fish need together?

At least 20 gal, set by the paradise fish. Add space for each extra fish.