Can apistogramma live with odessa barbs?

Verdict
Yes

Yes. Apistogramma and odessa barbs get along in the same tank. Both are fine at 75–79°F. Plan on at least 30 gal.

ApistogrammaApistogramma75–84°F · pH 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°Apistogramma 75–84°Odessa barb 70–79°
The green band is the temperature range both can live in.
456789Both: 6–7Apistogramma 5–7Odessa barb 6–7.5
The green band is the pH both tolerate.

Size to scale

Apistogramma · 3 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

ApistogrammaOdessa barb
Temperature75–84 °F70–79 °F
pH5–76–7.5
Adult size3.0 in3.0 in
Minimum tank20 gal30 gal
TemperamentSemi-aggressivePeaceful
Swims atBottomMiddle
GroupAlone or in pairsGroups of 6+
DietCarnivoreOmnivore

Better tank mates for apistogramma

All apistogramma tank mates

Better tank mates for odessa barbs

All odessa barb tank mates

Questions

Can apistogramma live with odessa barbs?

Yes. Apistogramma and odessa barbs get along in the same tank. Both are fine at 75–79°F. Plan on at least 30 gal.

What temperature suits both apistogramma and odessa barbs?

75–79 °F. Apistogramma need 75–84 °F, odessa barbs need 70–79 °F.

What size tank do apistogramma and odessa barbs need together?

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