Can rosy barbs live with tinfoil barbs?

Verdict
Yes, with care

Yes, with care. Rosy barbs and tinfoil barbs can share a tank, but watch one thing. Tinfoil barbs grow to 12 inches and need 125 gallons, far more than a tank set up for rosy barbs.

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–77°Rosy barb 64–77°Tinfoil barb 72–80°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Rosy barb 6–7.5Tinfoil barb 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Rosy barb · 4 inTinfoil barb · 12 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

Rosy barbTinfoil barb
Temperature64–77 °F72–80 °F
pH6–7.56.5–7.5
Adult size4.0 in12.0 in
Minimum tank30 gal125 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 5+
DietOmnivoreOmnivore

Better tank mates for rosy barbs

All rosy barb tank mates

Better tank mates for tinfoil barbs

All tinfoil barb tank mates

Questions

Can rosy barbs live with tinfoil barbs?

Yes, with care. Rosy barbs and tinfoil barbs can share a tank, but watch one thing. Tinfoil barbs grow to 12 inches and need 125 gallons, far more than a tank set up for rosy barbs.

What temperature suits both rosy barbs and tinfoil barbs?

72–77 °F. Rosy barbs need 64–77 °F, tinfoil barbs need 72–80 °F.

What size tank do rosy barbs and tinfoil barbs need together?

At least 125 gal, set by the tinfoil barb. Add space for each extra fish.