Can red tail sharks live with upside down catfish?

Verdict
Yes, with care

Yes, with care. Red tail sharks and upside down catfish can share a tank, but watch one thing. Red tail sharks chase other bottom fish out of their patch.

Red tail sharkRed tail shark72–79°F · pH 6.5–7.5 Upside down catfishUpside down catfish72–79°F · pH 6–7.5

What to watch

What works

Water side by side

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

Size to scale

Red tail shark · 5 inUpside down catfish · 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

Red tail sharkUpside down catfish
Temperature72–79 °F72–79 °F
pH6.5–7.56–7.5
Adult size5.0 in4.0 in
Minimum tank55 gal30 gal
TemperamentSemi-aggressivePeaceful
Swims atBottomBottom
GroupOne per tankGroups of 3+
DietOmnivoreOmnivore

Better tank mates for red tail sharks

All red tail shark tank mates

Better tank mates for upside down catfish

All upside down catfish tank mates

Questions

Can red tail sharks live with upside down catfish?

Yes, with care. Red tail sharks and upside down catfish can share a tank, but watch one thing. Red tail sharks chase other bottom fish out of their patch.

What temperature suits both red tail sharks and upside down catfish?

72–79 °F. Red tail sharks need 72–79 °F, upside down catfish need 72–79 °F.

What size tank do red tail sharks and upside down catfish need together?

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