Can sparkling gouramis live with serpae tetras?

Verdict
Yes

Yes. Sparkling gouramis and serpae tetras get along in the same tank. Both are fine at 72–79°F. Plan on at least 20 gal.

Sparkling gouramiSparkling gourami72–82°F · pH 6–7.5 Serpae tetraSerpae tetra72–79°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–79°Sparkling gourami 72–82°Serpae tetra 72–79°
The green band is the temperature range both can live in.
456789Both: 6–7.5Sparkling gourami 6–7.5Serpae tetra 6–7.5
The green band is the pH both tolerate.

Size to scale

Sparkling gourami · 1.5 inSerpae tetra · 1.75 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

Sparkling gouramiSerpae tetra
Temperature72–82 °F72–79 °F
pH6–7.56–7.5
Adult size1.5 in1.75 in
Minimum tank5 gal20 gal
TemperamentPeacefulSemi-aggressive
Swims atTopMiddle
GroupGroups of 4+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for sparkling gouramis

All sparkling gourami tank mates

Better tank mates for serpae tetras

All serpae tetra tank mates

Questions

Can sparkling gouramis live with serpae tetras?

Yes. Sparkling gouramis and serpae tetras get along in the same tank. Both are fine at 72–79°F. Plan on at least 20 gal.

What temperature suits both sparkling gouramis and serpae tetras?

72–79 °F. Sparkling gouramis need 72–82 °F, serpae tetras need 72–79 °F.

What size tank do sparkling gouramis and serpae tetras need together?

At least 20 gal, set by the serpae tetra. Add space for each extra fish.