Can tiger barbs live with pictus catfish?

Verdict
Yes

Yes. Tiger barbs and pictus catfish get along in the same tank. Both are fine at 72–79°F. Plan on at least 55 gal.

Tiger barbTiger barb72–81°F · pH 6–7.5 Pictus catfishPictus catfish72–79°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–79°Tiger barb 72–81°Pictus catfish 72–79°
The green band is the temperature range both can live in.
456789Both: 6–7.5Tiger barb 6–7.5Pictus catfish 6–7.5
The green band is the pH both tolerate.

Size to scale

Tiger barb · 3 inPictus catfish · 5 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

Tiger barbPictus catfish
Temperature72–81 °F72–79 °F
pH6–7.56–7.5
Adult size3.0 in5.0 in
Minimum tank30 gal55 gal
TemperamentSemi-aggressiveSemi-aggressive
Swims atMiddleBottom
GroupGroups of 6+Groups of 3+
DietOmnivoreCarnivore

Better tank mates for tiger barbs

All tiger barb tank mates

Better tank mates for pictus catfish

All pictus catfish tank mates

Questions

Can tiger barbs live with pictus catfish?

Yes. Tiger barbs and pictus catfish get along in the same tank. Both are fine at 72–79°F. Plan on at least 55 gal.

What temperature suits both tiger barbs and pictus catfish?

72–79 °F. Tiger barbs need 72–81 °F, pictus catfish need 72–79 °F.

What size tank do tiger barbs and pictus catfish need together?

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