Can clown loaches live with plecos?

Verdict
Yes

Yes. Clown loaches and plecos make a good pair. Both are fine at 77–86°F. Plan on at least 125 gal.

Clown loachClown loach77–86°F · pH 6–7.5 Common plecoCommon pleco72–86°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 77–86°Clown loach 77–86°Common pleco 72–86°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Clown loach 6–7.5Common pleco 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Clown loach · 8 inCommon pleco · 15 in0"2"4"6"8"10"12"14"
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 loachCommon pleco
Temperature77–86 °F72–86 °F
pH6–7.56.5–7.5
Adult size8.0 in15.0 in
Minimum tank75 gal125 gal
TemperamentPeacefulPeaceful
Swims atBottomBottom
GroupGroups of 5+Alone or in pairs
DietOmnivoreHerbivore

Better tank mates for clown loaches

All clown loach tank mates

Better tank mates for plecos

All common pleco tank mates

Questions

Can clown loaches live with plecos?

Yes. Clown loaches and plecos make a good pair. Both are fine at 77–86°F. Plan on at least 125 gal.

What temperature suits both clown loaches and plecos?

77–86 °F. Clown loaches need 77–86 °F, plecos need 72–86 °F.

What size tank do clown loaches and plecos need together?

At least 125 gal, set by the common pleco. Add space for each extra fish.