Can severums live with rosy barbs?

Verdict
Yes

Yes, severums and rosy barbs can live together. Both are fine at 74–77°F. Plan on at least 55 gal.

SeverumSeverum74–84°F · pH 6–7 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: 74–77°Severum 74–84°Rosy barb 64–77°
The green band is the temperature range both can live in.
456789Both: 6–7Severum 6–7Rosy barb 6–7.5
The green band is the pH both tolerate.

Size to scale

Severum · 8 inRosy barb · 4 in0"1"2"3"4"5"6"7"8"
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

SeverumRosy barb
Temperature74–84 °F64–77 °F
pH6–76–7.5
Adult size8.0 in4.0 in
Minimum tank55 gal30 gal
TemperamentSemi-aggressiveSemi-aggressive
Swims atMiddleMiddle
GroupAlone or in pairsGroups of 6+
DietOmnivoreOmnivore

Better tank mates for severums

All severum tank mates

Better tank mates for rosy barbs

All rosy barb tank mates

Questions

Can severums live with rosy barbs?

Yes, severums and rosy barbs can live together. Both are fine at 74–77°F. Plan on at least 55 gal.

What temperature suits both severums and rosy barbs?

74–77 °F. Severums need 74–84 °F, rosy barbs need 64–77 °F.

What size tank do severums and rosy barbs need together?

At least 55 gal, set by the severum. Add space for each extra fish.