Can red tail sharks live with severums?

Verdict
Yes

Yes, red tail sharks and severums can live together. Both are fine at 74–79°F. Plan on at least 55 gal.

Red tail sharkRed tail shark72–79°F · pH 6.5–7.5 SeverumSeverum74–84°F · pH 6–7

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 74–79°Red tail shark 72–79°Severum 74–84°
The green band is the temperature range both can live in.
456789Both: 6.5–7Red tail shark 6.5–7.5Severum 6–7
The green band is the pH both tolerate.

Size to scale

Red tail shark · 5 inSeverum · 8 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

Red tail sharkSeverum
Temperature72–79 °F74–84 °F
pH6.5–7.56–7
Adult size5.0 in8.0 in
Minimum tank55 gal55 gal
TemperamentSemi-aggressiveSemi-aggressive
Swims atBottomMiddle
GroupOne per tankAlone or in pairs
DietOmnivoreOmnivore

Better tank mates for red tail sharks

All red tail shark tank mates

Better tank mates for severums

All severum tank mates

Questions

Can red tail sharks live with severums?

Yes, red tail sharks and severums can live together. Both are fine at 74–79°F. Plan on at least 55 gal.

What temperature suits both red tail sharks and severums?

74–79 °F. Red tail sharks need 72–79 °F, severums need 74–84 °F.

What size tank do red tail sharks and severums need together?

At least 55 gal, set by the red tail shark. Add space for each extra fish.