Can tiger barbs live with dojo loaches?

Verdict
Yes

Yes, tiger barbs and dojo loaches can live together. Both are fine at 72–77°F. Plan on at least 55 gal.

Tiger barbTiger barb72–81°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: 72–77°Tiger barb 72–81°Dojo loach 59–77°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Tiger barb 6–7.5Dojo loach 6.5–8
The green band is the pH both tolerate.

Size to scale

Tiger barb · 3 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

Tiger barbDojo loach
Temperature72–81 °F59–77 °F
pH6–7.56.5–8
Adult size3.0 in6.0 in
Minimum tank30 gal55 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleBottom
GroupGroups of 6+Groups of 3+
DietOmnivoreOmnivore

Better tank mates for tiger barbs

All tiger barb tank mates

Better tank mates for dojo loaches

All dojo loach tank mates

Questions

Can tiger barbs live with dojo loaches?

Yes, tiger barbs and dojo loaches can live together. Both are fine at 72–77°F. Plan on at least 55 gal.

What temperature suits both tiger barbs and dojo loaches?

72–77 °F. Tiger barbs need 72–81 °F, dojo loaches need 59–77 °F.

What size tank do tiger barbs and dojo loaches need together?

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