Can crayfish live with glofish?

Verdict
Yes

Yes. Crayfish and glofish get along in the same tank. Both are fine at 72–77°F. Plan on at least 20 gal.

CrayfishCrayfish65–77°F · pH 6.5–8 GloFish tetraGloFish tetra72–80°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–77°Crayfish 65–77°GloFish tetra 72–80°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Crayfish 6.5–8GloFish tetra 6–7.5
The green band is the pH both tolerate.

Size to scale

Crayfish · 5 inGloFish tetra · 2.5 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

CrayfishGloFish tetra
Temperature65–77 °F72–80 °F
pH6.5–86–7.5
Adult size5.0 in2.5 in
Minimum tank20 gal15 gal
TemperamentAggressiveSemi-aggressive
Swims atBottomMiddle
GroupOne per tankGroups of 6+
DietOmnivoreOmnivore

Better tank mates for crayfish

All crayfish tank mates

Better tank mates for glofish

All glofish tetra tank mates

Questions

Can crayfish live with glofish?

Yes. Crayfish and glofish get along in the same tank. Both are fine at 72–77°F. Plan on at least 20 gal.

What temperature suits both crayfish and glofish?

72–77 °F. Crayfish need 65–77 °F, glofish need 72–80 °F.

What size tank do crayfish and glofish need together?

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