Can dojo loaches live with dwarf neon rainbowfish?

Verdict
Yes

Yes. Dojo loaches and dwarf neon rainbowfish get along in the same tank. Both are fine at 75–77°F. Plan on at least 55 gal.

Dojo loachDojo loach59–77°F · pH 6.5–8 Dwarf neon rainbowfishDwarf neon rainbowfish75–82°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–77°Dojo loach 59–77°Dwarf neon rainbowfish 75–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Dojo loach 6.5–8Dwarf neon rainbowfish 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Dojo loach · 6 inDwarf neon rainbowfish · 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

Dojo loachDwarf neon rainbowfish
Temperature59–77 °F75–82 °F
pH6.5–86.5–7.5
Adult size6.0 in2.5 in
Minimum tank55 gal20 gal
TemperamentPeacefulPeaceful
Swims atBottomMiddle
GroupGroups of 3+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for dojo loaches

All dojo loach tank mates

Better tank mates for dwarf neon rainbowfish

All dwarf neon rainbowfish tank mates

Questions

Can dojo loaches live with dwarf neon rainbowfish?

Yes. Dojo loaches and dwarf neon rainbowfish get along in the same tank. Both are fine at 75–77°F. Plan on at least 55 gal.

What temperature suits both dojo loaches and dwarf neon rainbowfish?

75–77 °F. Dojo loaches need 59–77 °F, dwarf neon rainbowfish need 75–82 °F.

What size tank do dojo loaches and dwarf neon rainbowfish need together?

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