Can platies live with dojo loaches?

Verdict
Yes

Yes, platies and dojo loaches can live together. Both are fine at 70–77°F. Plan on at least 55 gal.

PlatyPlaty70–80°F · pH 7–8.2 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°Platy 70–80°Dojo loach 59–77°
The green band is the temperature range both can live in.
456789Both: 7–8Platy 7–8.2Dojo loach 6.5–8
The green band is the pH both tolerate.

Size to scale

Platy · 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

PlatyDojo loach
Temperature70–80 °F59–77 °F
pH7–8.26.5–8
Adult size2.5 in6.0 in
Minimum tank10 gal55 gal
TemperamentPeacefulPeaceful
Swims atMiddleBottom
GroupGroups of 3+Groups of 3+
DietOmnivoreOmnivore

Better tank mates for platies

All platy tank mates

Better tank mates for dojo loaches

All dojo loach tank mates

Questions

Can platies live with dojo loaches?

Yes, platies and dojo loaches can live together. Both are fine at 70–77°F. Plan on at least 55 gal.

What temperature suits both platies and dojo loaches?

70–77 °F. Platies need 70–80 °F, dojo loaches need 59–77 °F.

What size tank do platies and dojo loaches need together?

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