Can odessa barbs live with black neon tetras?

Verdict
Yes

Yes. Odessa barbs and black neon tetras get along in the same tank. Both are fine at 73–79°F. Plan on at least 30 gal.

Odessa barbOdessa barb70–79°F · pH 6–7.5 Black neon tetraBlack neon tetra73–81°F · pH 5.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–79°Odessa barb 70–79°Black neon tetra 73–81°
The green band is the temperature range both can live in.
456789Both: 6–7.5Odessa barb 6–7.5Black neon tetra 5.5–7.5
The green band is the pH both tolerate.

Size to scale

Odessa barb · 3 inBlack neon tetra · 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 barbBlack neon tetra
Temperature70–79 °F73–81 °F
pH6–7.55.5–7.5
Adult size3.0 in1.5 in
Minimum tank30 gal15 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for odessa barbs

All odessa barb tank mates

Better tank mates for black neon tetras

All black neon tetra tank mates

Questions

Can odessa barbs live with black neon tetras?

Yes. Odessa barbs and black neon tetras get along in the same tank. Both are fine at 73–79°F. Plan on at least 30 gal.

What temperature suits both odessa barbs and black neon tetras?

73–79 °F. Odessa barbs need 70–79 °F, black neon tetras need 73–81 °F.

What size tank do odessa barbs and black neon tetras need together?

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