Can crayfish live with elephant nose fish?

Verdict
Yes

Yes. Crayfish and elephant nose fish get along in the same tank. Both are fine at 73–77°F. Plan on at least 55 gal.

CrayfishCrayfish65–77°F · pH 6.5–8 Elephant nose fishElephant nose fish73–82°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–77°Crayfish 65–77°Elephant nose fish 73–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Crayfish 6.5–8Elephant nose fish 6–7.5
The green band is the pH both tolerate.

Size to scale

Crayfish · 5 inElephant nose fish · 9 in0"1"2"3"4"5"6"7"8"9"
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

CrayfishElephant nose fish
Temperature65–77 °F73–82 °F
pH6.5–86–7.5
Adult size5.0 in9.0 in
Minimum tank20 gal55 gal
TemperamentAggressiveSemi-aggressive
Swims atBottomBottom
GroupOne per tankAlone or in pairs
DietOmnivoreCarnivore

Better tank mates for crayfish

All crayfish tank mates

Better tank mates for elephant nose fish

All elephant nose fish tank mates

Questions

Can crayfish live with elephant nose fish?

Yes. Crayfish and elephant nose fish get along in the same tank. Both are fine at 73–77°F. Plan on at least 55 gal.

What temperature suits both crayfish and elephant nose fish?

73–77 °F. Crayfish need 65–77 °F, elephant nose fish need 73–82 °F.

What size tank do crayfish and elephant nose fish need together?

At least 55 gal, set by the elephant nose fish. Add space for each extra fish.