Can yoyo loaches live with swordtails?

Verdict
Yes

Yes, yoyo loaches and swordtails can live together. Both are fine at 75–79°F. Plan on at least 40 gal.

Yoyo loachYoyo loach75–86°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: 75–79°Yoyo loach 75–86°Swordtail 72–79°
The green band is the temperature range both can live in.
456789Both: 7–7.5Yoyo loach 6–7.5Swordtail 7–8.3
The green band is the pH both tolerate.

Size to scale

Yoyo loach · 5 inSwordtail · 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

Yoyo loachSwordtail
Temperature75–86 °F72–79 °F
pH6–7.57–8.3
Adult size5.0 in5.0 in
Minimum tank40 gal30 gal
TemperamentSemi-aggressiveSemi-aggressive
Swims atBottomMiddle
GroupGroups of 5+Groups of 3+
DietOmnivoreOmnivore

Better tank mates for yoyo loaches

All yoyo loach tank mates

Better tank mates for swordtails

All swordtail tank mates

Questions

Can yoyo loaches live with swordtails?

Yes, yoyo loaches and swordtails can live together. Both are fine at 75–79°F. Plan on at least 40 gal.

What temperature suits both yoyo loaches and swordtails?

75–79 °F. Yoyo loaches need 75–86 °F, swordtails need 72–79 °F.

What size tank do yoyo loaches and swordtails need together?

At least 40 gal, set by the yoyo loach. Add space for each extra fish.