Can black skirt tetras live with dojo loaches?

Verdict
Yes

Yes. Black skirt tetras and dojo loaches get along in the same tank. Both are fine at 70–77°F. Plan on at least 55 gal.

Black skirt tetraBlack skirt tetra70–80°F · pH 6–7.5 Dojo loachDojo loach59–77°F · pH 6.5–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 70–77°Black skirt tetra 70–80°Dojo loach 59–77°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Black skirt tetra 6–7.5Dojo loach 6.5–8
The green band is the pH both tolerate.

Size to scale

Black skirt tetra · 2.5 inDojo loach · 6 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 tetraDojo loach
Temperature70–80 °F59–77 °F
pH6–7.56.5–8
Adult size2.5 in6.0 in
Minimum tank15 gal55 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleBottom
GroupGroups of 6+Groups of 3+
DietOmnivoreOmnivore

Better tank mates for black skirt tetras

All black skirt tetra tank mates

Better tank mates for dojo loaches

All dojo loach tank mates

Questions

Can black skirt tetras live with dojo loaches?

Yes. Black skirt tetras and dojo loaches get along in the same tank. Both are fine at 70–77°F. Plan on at least 55 gal.

What temperature suits both black skirt tetras and dojo loaches?

70–77 °F. Black skirt tetras need 70–80 °F, dojo loaches need 59–77 °F.

What size tank do black skirt tetras and dojo loaches need together?

At least 55 gal, set by the dojo loach. Add space for each extra fish.