Can killifish live with odessa barbs?

Verdict
Yes

Yes, killifish and odessa barbs can live together. Both are fine at 70–77°F. Plan on at least 30 gal.

KillifishKillifish70–77°F · pH 5.5–7 Odessa barbOdessa barb70–79°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 70–77°Killifish 70–77°Odessa barb 70–79°
The green band is the temperature range both can live in.
456789Both: 6–7Killifish 5.5–7Odessa barb 6–7.5
The green band is the pH both tolerate.

Size to scale

Killifish · 2.5 inOdessa barb · 3 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

KillifishOdessa barb
Temperature70–77 °F70–79 °F
pH5.5–76–7.5
Adult size2.5 in3.0 in
Minimum tank10 gal30 gal
TemperamentPeacefulPeaceful
Swims atTopMiddle
GroupAlone or in pairsGroups of 6+
DietCarnivoreOmnivore

Better tank mates for killifish

All killifish tank mates

Better tank mates for odessa barbs

All odessa barb tank mates

Questions

Can killifish live with odessa barbs?

Yes, killifish and odessa barbs can live together. Both are fine at 70–77°F. Plan on at least 30 gal.

What temperature suits both killifish and odessa barbs?

70–77 °F. Killifish need 70–77 °F, odessa barbs need 70–79 °F.

What size tank do killifish and odessa barbs need together?

At least 30 gal, set by the odessa barb. Add space for each extra fish.