Can pearl gouramis live with rummy nose tetras?

Verdict
Yes

Yes, pearl gouramis and rummy nose tetras can live together. Both are fine at 77–82°F. Plan on at least 30 gal.

Pearl gouramiPearl gourami77–82°F · pH 6–7.5 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: 77–82°Pearl gourami 77–82°Rummy nose tetra 75–84°
The green band is the temperature range both can live in.
456789Both: 6–7Pearl gourami 6–7.5Rummy nose tetra 5.5–7
The green band is the pH both tolerate.

Size to scale

Pearl gourami · 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

Pearl gouramiRummy nose tetra
Temperature77–82 °F75–84 °F
pH6–7.55.5–7
Adult size5.0 in2.0 in
Minimum tank30 gal20 gal
TemperamentPeacefulPeaceful
Swims atTopMiddle
GroupAlone or in pairsGroups of 6+
DietOmnivoreOmnivore

Better tank mates for pearl gouramis

All pearl gourami tank mates

Better tank mates for rummy nose tetras

All rummy nose tetra tank mates

Questions

Can pearl gouramis live with rummy nose tetras?

Yes, pearl gouramis and rummy nose tetras can live together. Both are fine at 77–82°F. Plan on at least 30 gal.

What temperature suits both pearl gouramis and rummy nose tetras?

77–82 °F. Pearl gouramis need 77–82 °F, rummy nose tetras need 75–84 °F.

What size tank do pearl gouramis and rummy nose tetras need together?

At least 30 gal, set by the pearl gourami. Add space for each extra fish.