Can upside down catfish live with odessa barbs?

Verdict
Yes

Yes. Upside down catfish and odessa barbs make a good pair. Both are fine at 72–79°F. Plan on at least 30 gal.

Upside down catfishUpside down catfish72–79°F · pH 6–7.5 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: 72–79°Upside down catfish 72–79°Odessa barb 70–79°
The green band is the temperature range both can live in.
456789Both: 6–7.5Upside down catfish 6–7.5Odessa barb 6–7.5
The green band is the pH both tolerate.

Size to scale

Upside down catfish · 4 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

Upside down catfishOdessa barb
Temperature72–79 °F70–79 °F
pH6–7.56–7.5
Adult size4.0 in3.0 in
Minimum tank30 gal30 gal
TemperamentPeacefulPeaceful
Swims atBottomMiddle
GroupGroups of 3+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for upside down catfish

All upside down catfish tank mates

Better tank mates for odessa barbs

All odessa barb tank mates

Questions

Can upside down catfish live with odessa barbs?

Yes. Upside down catfish and odessa barbs make a good pair. Both are fine at 72–79°F. Plan on at least 30 gal.

What temperature suits both upside down catfish and odessa barbs?

72–79 °F. Upside down catfish need 72–79 °F, odessa barbs need 70–79 °F.

What size tank do upside down catfish and odessa barbs need together?

At least 30 gal, set by the upside down catfish. Add space for each extra fish.