Can bristlenose plecos live with clown loaches?

Verdict
Yes

Yes. Bristlenose plecos and clown loaches get along in the same tank. Both are fine at 77–81°F. Plan on at least 75 gal.

Bristlenose plecoBristlenose pleco73–81°F · pH 6.5–7.5 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: 77–81°Bristlenose pleco 73–81°Clown loach 77–86°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Bristlenose pleco 6.5–7.5Clown loach 6–7.5
The green band is the pH both tolerate.

Size to scale

Bristlenose pleco · 5 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

Bristlenose plecoClown loach
Temperature73–81 °F77–86 °F
pH6.5–7.56–7.5
Adult size5.0 in8.0 in
Minimum tank30 gal75 gal
TemperamentPeacefulPeaceful
Swims atBottomBottom
GroupAlone or in pairsGroups of 5+
DietHerbivoreOmnivore

Better tank mates for bristlenose plecos

All bristlenose pleco tank mates

Better tank mates for clown loaches

All clown loach tank mates

Questions

Can bristlenose plecos live with clown loaches?

Yes. Bristlenose plecos and clown loaches get along in the same tank. Both are fine at 77–81°F. Plan on at least 75 gal.

What temperature suits both bristlenose plecos and clown loaches?

77–81 °F. Bristlenose plecos need 73–81 °F, clown loaches need 77–86 °F.

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

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