Can pearl gouramis live with black neon tetras?

Verdict
Yes

Yes, pearl gouramis and black neon tetras can live together. Both are fine at 77–81°F. Plan on at least 30 gal.

Pearl gouramiPearl gourami77–82°F · pH 6–7.5 Black neon tetraBlack neon tetra73–81°F · pH 5.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 77–81°Pearl gourami 77–82°Black neon tetra 73–81°
The green band is the temperature range both can live in.
456789Both: 6–7.5Pearl gourami 6–7.5Black neon tetra 5.5–7.5
The green band is the pH both tolerate.

Size to scale

Pearl gourami · 5 inBlack neon tetra · 1.5 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

Pearl gouramiBlack neon tetra
Temperature77–82 °F73–81 °F
pH6–7.55.5–7.5
Adult size5.0 in1.5 in
Minimum tank30 gal15 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 black neon tetras

All black neon tetra tank mates

Questions

Can pearl gouramis live with black neon tetras?

Yes, pearl gouramis and black neon tetras can live together. Both are fine at 77–81°F. Plan on at least 30 gal.

What temperature suits both pearl gouramis and black neon tetras?

77–81 °F. Pearl gouramis need 77–82 °F, black neon tetras need 73–81 °F.

What size tank do pearl gouramis and black neon tetras need together?

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