Can kuhli loaches live with rosy barbs?

Verdict
Yes

Yes, kuhli loaches and rosy barbs can live together. Both are fine at 75–77°F. Plan on at least 30 gal.

Kuhli loachKuhli loach75–86°F · pH 5.5–7 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: 75–77°Kuhli loach 75–86°Rosy barb 64–77°
The green band is the temperature range both can live in.
456789Both: 6–7Kuhli loach 5.5–7Rosy barb 6–7.5
The green band is the pH both tolerate.

Size to scale

Kuhli loach · 3.5 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

Kuhli loachRosy barb
Temperature75–86 °F64–77 °F
pH5.5–76–7.5
Adult size3.5 in4.0 in
Minimum tank20 gal30 gal
TemperamentPeacefulSemi-aggressive
Swims atBottomMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for kuhli loaches

All kuhli loach tank mates

Better tank mates for rosy barbs

All rosy barb tank mates

Questions

Can kuhli loaches live with rosy barbs?

Yes, kuhli loaches and rosy barbs can live together. Both are fine at 75–77°F. Plan on at least 30 gal.

What temperature suits both kuhli loaches and rosy barbs?

75–77 °F. Kuhli loaches need 75–86 °F, rosy barbs need 64–77 °F.

What size tank do kuhli loaches and rosy barbs need together?

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