Can crayfish live with yoyo loaches?

Verdict
Yes

Yes. Crayfish and yoyo loaches get along in the same tank. Both are fine at 75–77°F. Plan on at least 40 gal.

CrayfishCrayfish65–77°F · pH 6.5–8 Yoyo loachYoyo loach75–86°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–77°Crayfish 65–77°Yoyo loach 75–86°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Crayfish 6.5–8Yoyo loach 6–7.5
The green band is the pH both tolerate.

Size to scale

Crayfish · 5 inYoyo loach · 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

CrayfishYoyo loach
Temperature65–77 °F75–86 °F
pH6.5–86–7.5
Adult size5.0 in5.0 in
Minimum tank20 gal40 gal
TemperamentAggressiveSemi-aggressive
Swims atBottomBottom
GroupOne per tankGroups of 5+
DietOmnivoreOmnivore

Better tank mates for crayfish

All crayfish tank mates

Better tank mates for yoyo loaches

All yoyo loach tank mates

Questions

Can crayfish live with yoyo loaches?

Yes. Crayfish and yoyo loaches get along in the same tank. Both are fine at 75–77°F. Plan on at least 40 gal.

What temperature suits both crayfish and yoyo loaches?

75–77 °F. Crayfish need 65–77 °F, yoyo loaches need 75–86 °F.

What size tank do crayfish and yoyo loaches need together?

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