Can rummy nose tetras live with odessa barbs?

Verdict
Yes

Yes, rummy nose tetras and odessa barbs can live together. Both are fine at 75–79°F. Plan on at least 30 gal.

Rummy nose tetraRummy nose tetra75–84°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: 75–79°Rummy nose tetra 75–84°Odessa barb 70–79°
The green band is the temperature range both can live in.
456789Both: 6–7Rummy nose tetra 5.5–7Odessa barb 6–7.5
The green band is the pH both tolerate.

Size to scale

Rummy nose tetra · 2 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

Rummy nose tetraOdessa barb
Temperature75–84 °F70–79 °F
pH5.5–76–7.5
Adult size2.0 in3.0 in
Minimum tank20 gal30 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for rummy nose tetras

All rummy nose tetra tank mates

Better tank mates for odessa barbs

All odessa barb tank mates

Questions

Can rummy nose tetras live with odessa barbs?

Yes, rummy nose tetras and odessa barbs can live together. Both are fine at 75–79°F. Plan on at least 30 gal.

What temperature suits both rummy nose tetras and odessa barbs?

75–79 °F. Rummy nose tetras need 75–84 °F, odessa barbs need 70–79 °F.

What size tank do rummy nose tetras and odessa barbs need together?

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