Can clown plecos live with zebra loaches?

Verdict
Yes

Yes. Clown plecos and zebra loaches get along in the same tank. Both are fine at 73–79°F. Plan on at least 30 gal.

Clown plecoClown pleco73–82°F · pH 6.5–7.5 Zebra loachZebra loach73–79°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–79°Clown pleco 73–82°Zebra loach 73–79°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Clown pleco 6.5–7.5Zebra loach 6–7.5
The green band is the pH both tolerate.

Size to scale

Clown pleco · 3.5 inZebra loach · 3.5 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

Clown plecoZebra loach
Temperature73–82 °F73–79 °F
pH6.5–7.56–7.5
Adult size3.5 in3.5 in
Minimum tank20 gal30 gal
TemperamentPeacefulPeaceful
Swims atBottomBottom
GroupAlone or in pairsGroups of 5+
DietHerbivoreOmnivore

Better tank mates for clown plecos

All clown pleco tank mates

Better tank mates for zebra loaches

All zebra loach tank mates

Questions

Can clown plecos live with zebra loaches?

Yes. Clown plecos and zebra loaches get along in the same tank. Both are fine at 73–79°F. Plan on at least 30 gal.

What temperature suits both clown plecos and zebra loaches?

73–79 °F. Clown plecos need 73–82 °F, zebra loaches need 73–79 °F.

What size tank do clown plecos and zebra loaches need together?

At least 30 gal, set by the zebra loach. Add space for each extra fish.