Can blue gouramis live with lemon tetras?

Verdict
Yes

Yes, blue gouramis and lemon tetras can live together. Both are fine at 72–82°F. Plan on at least 30 gal.

Blue gouramiBlue gourami72–82°F · pH 6–8 Lemon tetraLemon tetra72–82°F · pH 5.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–82°Blue gourami 72–82°Lemon tetra 72–82°
The green band is the temperature range both can live in.
456789Both: 6–7.5Blue gourami 6–8Lemon tetra 5.5–7.5
The green band is the pH both tolerate.

Size to scale

Blue gourami · 5 inLemon 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

Blue gouramiLemon tetra
Temperature72–82 °F72–82 °F
pH6–85.5–7.5
Adult size5.0 in2.0 in
Minimum tank30 gal15 gal
TemperamentSemi-aggressivePeaceful
Swims atTopMiddle
GroupAlone or in pairsGroups of 6+
DietOmnivoreOmnivore

Better tank mates for blue gouramis

All blue gourami tank mates

Better tank mates for lemon tetras

All lemon tetra tank mates

Questions

Can blue gouramis live with lemon tetras?

Yes, blue gouramis and lemon tetras can live together. Both are fine at 72–82°F. Plan on at least 30 gal.

What temperature suits both blue gouramis and lemon tetras?

72–82 °F. Blue gouramis need 72–82 °F, lemon tetras need 72–82 °F.

What size tank do blue gouramis and lemon tetras need together?

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