Can crayfish live with zebra danios?

Verdict
Yes

Yes, crayfish and zebra danios can live together. Both are fine at 65–77°F. Plan on at least 20 gal.

CrayfishCrayfish65–77°F · pH 6.5–8 Zebra danioZebra danio65–77°F · pH 6.5–8

Why it works

Water side by side

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

Size to scale

Crayfish · 5 inZebra danio · 2 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

CrayfishZebra danio
Temperature65–77 °F65–77 °F
pH6.5–86.5–8
Adult size5.0 in2.0 in
Minimum tank20 gal10 gal
TemperamentAggressivePeaceful
Swims atBottomTop
GroupOne per tankGroups of 6+
DietOmnivoreOmnivore

Better tank mates for crayfish

All crayfish tank mates

Better tank mates for zebra danios

All zebra danio tank mates

Questions

Can crayfish live with zebra danios?

Yes, crayfish and zebra danios can live together. Both are fine at 65–77°F. Plan on at least 20 gal.

What temperature suits both crayfish and zebra danios?

65–77 °F. Crayfish need 65–77 °F, zebra danios need 65–77 °F.

What size tank do crayfish and zebra danios need together?

At least 20 gal, set by the crayfish. Add space for each extra fish.