Can zebra danios live with killifish?

Verdict
Yes

Yes. Zebra danios and killifish get along in the same tank. Both are fine at 70–77°F. Plan on at least 10 gal.

Zebra danioZebra danio65–77°F · pH 6.5–8 KillifishKillifish70–77°F · pH 5.5–7

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 70–77°Zebra danio 65–77°Killifish 70–77°
The green band is the temperature range both can live in.
456789Both: 6.5–7Zebra danio 6.5–8Killifish 5.5–7
The green band is the pH both tolerate.

Size to scale

Zebra danio · 2 inKillifish · 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

Zebra danioKillifish
Temperature65–77 °F70–77 °F
pH6.5–85.5–7
Adult size2.0 in2.5 in
Minimum tank10 gal10 gal
TemperamentPeacefulPeaceful
Swims atTopTop
GroupGroups of 6+Alone or in pairs
DietOmnivoreCarnivore

Better tank mates for zebra danios

All zebra danio tank mates

Better tank mates for killifish

All killifish tank mates

Questions

Can zebra danios live with killifish?

Yes. Zebra danios and killifish get along in the same tank. Both are fine at 70–77°F. Plan on at least 10 gal.

What temperature suits both zebra danios and killifish?

70–77 °F. Zebra danios need 65–77 °F, killifish need 70–77 °F.

What size tank do zebra danios and killifish need together?

At least 10 gal, set by the zebra danio. Add space for each extra fish.