Can crayfish live with yellow labs?

Verdict
Yes

Yes. Crayfish and yellow labs make a good pair. Both are fine at 75–77°F. Plan on at least 40 gal.

CrayfishCrayfish65–77°F · pH 6.5–8 Electric yellow cichlidElectric yellow cichlid75–82°F · pH 7.8–8.6

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–77°Crayfish 65–77°Electric yellow cichlid 75–82°
The green band is the temperature range both can live in.
456789Both: 7.8–8Crayfish 6.5–8Electric yellow cichlid 7.8–8.6
The green band is the pH both tolerate.

Size to scale

Crayfish · 5 inElectric yellow cichlid · 4 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

CrayfishElectric yellow cichlid
Temperature65–77 °F75–82 °F
pH6.5–87.8–8.6
Adult size5.0 in4.0 in
Minimum tank20 gal40 gal
TemperamentAggressiveSemi-aggressive
Swims atBottomAll levels
GroupOne per tankGroups of 4+
DietOmnivoreOmnivore

Better tank mates for crayfish

All crayfish tank mates

Better tank mates for yellow labs

All electric yellow cichlid tank mates

Questions

Can crayfish live with yellow labs?

Yes. Crayfish and yellow labs make a good pair. Both are fine at 75–77°F. Plan on at least 40 gal.

What temperature suits both crayfish and yellow labs?

75–77 °F. Crayfish need 65–77 °F, yellow labs need 75–82 °F.

What size tank do crayfish and yellow labs need together?

At least 40 gal, set by the electric yellow cichlid. Add space for each extra fish.