TankmateChecker

Can crayfish live with severums?

Verdict

Yes

Yes, crayfish and severums can live together. Both are fine at 74–77°F. Plan on at least 55 gal.

Crayfish

Crayfish65–77°F · pH 6.5–8

Severum

Severum74–84°F · pH 6–7

Why it works

Both are fine at 74–77°F.
pH 6.5–7 suits both.
They use different parts of the tank: crayfish the bottom, severums the mid.

Water side by side

The green band is the temperature range both can live in.

The green band is the pH both tolerate.

Size to scale

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

	Crayfish	Severum
Temperature	65–77 °F	74–84 °F
pH	6.5–8	6–7
Adult size	5.0 in	8.0 in
Minimum tank	20 gal	55 gal
Temperament	Aggressive	Semi-aggressive
Swims at	Bottom	Middle
Group	One per tank	Alone or in pairs
Diet	Omnivore	Omnivore

Better tank mates for crayfish

All crayfish tank mates

Better tank mates for severums

All severum tank mates

Questions

Can crayfish live with severums?

Yes, crayfish and severums can live together. Both are fine at 74–77°F. Plan on at least 55 gal.

What temperature suits both crayfish and severums?

74–77 °F. Crayfish need 65–77 °F, severums need 74–84 °F.

What size tank do crayfish and severums need together?

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