Can kuhli loaches live with rummy nose tetras?

Verdict
Yes

Yes. Kuhli loaches and rummy nose tetras get along in the same tank. Both are fine at 75–84°F. Plan on at least 20 gal.

Kuhli loachKuhli loach75–86°F · pH 5.5–7 Rummy nose tetraRummy nose tetra75–84°F · pH 5.5–7

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–84°Kuhli loach 75–86°Rummy nose tetra 75–84°
The green band is the temperature range both can live in.
456789Both: 5.5–7Kuhli loach 5.5–7Rummy nose tetra 5.5–7
The green band is the pH both tolerate.

Size to scale

Kuhli loach · 3.5 inRummy nose tetra · 2 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

Kuhli loachRummy nose tetra
Temperature75–86 °F75–84 °F
pH5.5–75.5–7
Adult size3.5 in2.0 in
Minimum tank20 gal20 gal
TemperamentPeacefulPeaceful
Swims atBottomMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for kuhli loaches

All kuhli loach tank mates

Better tank mates for rummy nose tetras

All rummy nose tetra tank mates

Questions

Can kuhli loaches live with rummy nose tetras?

Yes. Kuhli loaches and rummy nose tetras get along in the same tank. Both are fine at 75–84°F. Plan on at least 20 gal.

What temperature suits both kuhli loaches and rummy nose tetras?

75–84 °F. Kuhli loaches need 75–86 °F, rummy nose tetras need 75–84 °F.

What size tank do kuhli loaches and rummy nose tetras need together?

At least 20 gal, set by the kuhli loach. Add space for each extra fish.