Can oscars live with odessa barbs?

Verdict
No

No. Oscars and odessa barbs should not share a tank. An adult oscar eats fish that fit in its mouth, and at 3 inches odessa barbs do.

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 74–79°Oscar 74–81°Odessa barb 70–79°
The green band is the temperature range both can live in.
456789Both: 6–7.5Oscar 6–8Odessa barb 6–7.5
The green band is the pH both tolerate.

Size to scale

Oscar · 12 inOdessa barb · 3 in0"2"4"6"8"10"12"
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

OscarOdessa barb
Temperature74–81 °F70–79 °F
pH6–86–7.5
Adult size12.0 in3.0 in
Minimum tank75 gal30 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleMiddle
GroupAlone or in pairsGroups of 6+
DietCarnivoreOmnivore

Better tank mates for oscars

All oscar tank mates

Better tank mates for odessa barbs

All odessa barb tank mates

Questions

Can oscars live with odessa barbs?

No. Oscars and odessa barbs should not share a tank. An adult oscar eats fish that fit in its mouth, and at 3 inches odessa barbs do.

What temperature suits both oscars and odessa barbs?

74–79 °F. Oscars need 74–81 °F, odessa barbs need 70–79 °F.

What size tank do oscars and odessa barbs need together?

At least 75 gal, set by the oscar. Add space for each extra fish.