Can severums live with tinfoil barbs?

Verdict
Yes

Yes. Severums and tinfoil barbs make a good pair. Both are fine at 74–80°F. Plan on at least 125 gal.

SeverumSeverum74–84°F · pH 6–7 Tinfoil barbTinfoil barb72–80°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 74–80°Severum 74–84°Tinfoil barb 72–80°
The green band is the temperature range both can live in.
456789Both: 6.5–7Severum 6–7Tinfoil barb 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Severum · 8 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

SeverumTinfoil barb
Temperature74–84 °F72–80 °F
pH6–76.5–7.5
Adult size8.0 in12.0 in
Minimum tank55 gal125 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleMiddle
GroupAlone or in pairsGroups of 5+
DietOmnivoreOmnivore

Better tank mates for severums

All severum tank mates

Better tank mates for tinfoil barbs

All tinfoil barb tank mates

Questions

Can severums live with tinfoil barbs?

Yes. Severums and tinfoil barbs make a good pair. Both are fine at 74–80°F. Plan on at least 125 gal.

What temperature suits both severums and tinfoil barbs?

74–80 °F. Severums need 74–84 °F, tinfoil barbs need 72–80 °F.

What size tank do severums and tinfoil barbs need together?

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