Can pictus catfish live with clown loaches?

Verdict
Yes

Yes. Pictus catfish and clown loaches get along in the same tank. Both are fine at 77–79°F. Plan on at least 75 gal.

Pictus catfishPictus catfish72–79°F · pH 6–7.5 Clown loachClown loach77–86°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 77–79°Pictus catfish 72–79°Clown loach 77–86°
The green band is the temperature range both can live in.
456789Both: 6–7.5Pictus catfish 6–7.5Clown loach 6–7.5
The green band is the pH both tolerate.

Size to scale

Pictus catfish · 5 inClown loach · 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

Pictus catfishClown loach
Temperature72–79 °F77–86 °F
pH6–7.56–7.5
Adult size5.0 in8.0 in
Minimum tank55 gal75 gal
TemperamentSemi-aggressivePeaceful
Swims atBottomBottom
GroupGroups of 3+Groups of 5+
DietCarnivoreOmnivore

Better tank mates for pictus catfish

All pictus catfish tank mates

Better tank mates for clown loaches

All clown loach tank mates

Questions

Can pictus catfish live with clown loaches?

Yes. Pictus catfish and clown loaches get along in the same tank. Both are fine at 77–79°F. Plan on at least 75 gal.

What temperature suits both pictus catfish and clown loaches?

77–79 °F. Pictus catfish need 72–79 °F, clown loaches need 77–86 °F.

What size tank do pictus catfish and clown loaches need together?

At least 75 gal, set by the clown loach. Add space for each extra fish.