Can ramshorn snails live with rosy barbs?

Verdict
Yes

Yes. Ramshorn snails and rosy barbs make a good pair. Both are fine at 70–77°F. Plan on at least 30 gal.

Ramshorn snailRamshorn snail70–80°F · pH 7–8 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: 70–77°Ramshorn snail 70–80°Rosy barb 64–77°
The green band is the temperature range both can live in.
456789Both: 7–7.5Ramshorn snail 7–8Rosy barb 6–7.5
The green band is the pH both tolerate.

Size to scale

Ramshorn snail · 1 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

Ramshorn snailRosy barb
Temperature70–80 °F64–77 °F
pH7–86–7.5
Adult size1.0 in4.0 in
Minimum tank5 gal30 gal
TemperamentPeacefulSemi-aggressive
Swims atBottomMiddle
GroupAlone or in pairsGroups of 6+
DietOmnivoreOmnivore

Better tank mates for ramshorn snails

All ramshorn snail tank mates

Better tank mates for rosy barbs

All rosy barb tank mates

Questions

Can ramshorn snails live with rosy barbs?

Yes. Ramshorn snails and rosy barbs make a good pair. Both are fine at 70–77°F. Plan on at least 30 gal.

What temperature suits both ramshorn snails and rosy barbs?

70–77 °F. Ramshorn snails need 70–80 °F, rosy barbs need 64–77 °F.

What size tank do ramshorn snails and rosy barbs need together?

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