Can discus live with clown loaches?

Verdict
Yes

Yes. Discus and clown loaches make a good pair. Both are fine at 82–86°F. Plan on at least 75 gal.

DiscusDiscus82–88°F · pH 5.5–7 Clown loachClown loach77–86°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 82–86°Discus 82–88°Clown loach 77–86°
The green band is the temperature range both can live in.
456789Both: 6–7Discus 5.5–7Clown loach 6–7.5
The green band is the pH both tolerate.

Size to scale

Discus · 6 inClown loach · 8 in0"1"2"3"4"5"6"7"8"
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

DiscusClown loach
Temperature82–88 °F77–86 °F
pH5.5–76–7.5
Adult size6.0 in8.0 in
Minimum tank55 gal75 gal
TemperamentPeacefulPeaceful
Swims atMiddleBottom
GroupGroups of 5+Groups of 5+
DietCarnivoreOmnivore

Better tank mates for discus

All discus tank mates

Better tank mates for clown loaches

All clown loach tank mates

Questions

Can discus live with clown loaches?

Yes. Discus and clown loaches make a good pair. Both are fine at 82–86°F. Plan on at least 75 gal.

What temperature suits both discus and clown loaches?

82–86 °F. Discus need 82–88 °F, clown loaches need 77–86 °F.

What size tank do discus and clown loaches need together?

At least 75 gal, set by the clown loach. Add space for each extra fish.