Can clown loaches live with swordtails?

Verdict
Yes

Yes. Clown loaches and swordtails get along in the same tank. Both are fine at 77–79°F. Plan on at least 75 gal.

Clown loachClown loach77–86°F · pH 6–7.5 SwordtailSwordtail72–79°F · pH 7–8.3

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 77–79°Clown loach 77–86°Swordtail 72–79°
The green band is the temperature range both can live in.
456789Both: 7–7.5Clown loach 6–7.5Swordtail 7–8.3
The green band is the pH both tolerate.

Size to scale

Clown loach · 8 inSwordtail · 5 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

Clown loachSwordtail
Temperature77–86 °F72–79 °F
pH6–7.57–8.3
Adult size8.0 in5.0 in
Minimum tank75 gal30 gal
TemperamentPeacefulSemi-aggressive
Swims atBottomMiddle
GroupGroups of 5+Groups of 3+
DietOmnivoreOmnivore

Better tank mates for clown loaches

All clown loach tank mates

Better tank mates for swordtails

All swordtail tank mates

Questions

Can clown loaches live with swordtails?

Yes. Clown loaches and swordtails get along in the same tank. Both are fine at 77–79°F. Plan on at least 75 gal.

What temperature suits both clown loaches and swordtails?

77–79 °F. Clown loaches need 77–86 °F, swordtails need 72–79 °F.

What size tank do clown loaches and swordtails need together?

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