Can odessa barbs live with hatchetfish?

Verdict
Yes

Yes. Odessa barbs and hatchetfish make a good pair. Both are fine at 75–79°F. Plan on at least 30 gal.

Odessa barbOdessa barb70–79°F · pH 6–7.5 HatchetfishHatchetfish75–81°F · pH 5.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–79°Odessa barb 70–79°Hatchetfish 75–81°
The green band is the temperature range both can live in.
456789Both: 6–7.5Odessa barb 6–7.5Hatchetfish 5.5–7.5
The green band is the pH both tolerate.

Size to scale

Odessa barb · 3 inHatchetfish · 1.5 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

Odessa barbHatchetfish
Temperature70–79 °F75–81 °F
pH6–7.55.5–7.5
Adult size3.0 in1.5 in
Minimum tank30 gal20 gal
TemperamentPeacefulPeaceful
Swims atMiddleTop
GroupGroups of 6+Groups of 6+
DietOmnivoreCarnivore

Better tank mates for odessa barbs

All odessa barb tank mates

Better tank mates for hatchetfish

All hatchetfish tank mates

Questions

Can odessa barbs live with hatchetfish?

Yes. Odessa barbs and hatchetfish make a good pair. Both are fine at 75–79°F. Plan on at least 30 gal.

What temperature suits both odessa barbs and hatchetfish?

75–79 °F. Odessa barbs need 70–79 °F, hatchetfish need 75–81 °F.

What size tank do odessa barbs and hatchetfish need together?

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