Can zebra danios live with rosy barbs?

Verdict
Yes

Yes. Zebra danios and rosy barbs make a good pair. Both are fine at 65–77°F. Plan on at least 30 gal.

Zebra danioZebra danio65–77°F · pH 6.5–8 Rosy barbRosy barb64–77°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 65–77°Zebra danio 65–77°Rosy barb 64–77°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Zebra danio 6.5–8Rosy barb 6–7.5
The green band is the pH both tolerate.

Size to scale

Zebra danio · 2 inRosy barb · 4 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

Zebra danioRosy barb
Temperature65–77 °F64–77 °F
pH6.5–86–7.5
Adult size2.0 in4.0 in
Minimum tank10 gal30 gal
TemperamentPeacefulSemi-aggressive
Swims atTopMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for zebra danios

All zebra danio tank mates

Better tank mates for rosy barbs

All rosy barb tank mates

Questions

Can zebra danios live with rosy barbs?

Yes. Zebra danios and rosy barbs make a good pair. Both are fine at 65–77°F. Plan on at least 30 gal.

What temperature suits both zebra danios and rosy barbs?

65–77 °F. Zebra danios need 65–77 °F, rosy barbs need 64–77 °F.

What size tank do zebra danios and rosy barbs need together?

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