Can guppies live with sparkling gouramis?

Verdict
Yes

Yes. Guppies and sparkling gouramis get along in the same tank. Both are fine at 72–82°F. Plan on at least 10 gal.

GuppyGuppy72–82°F · pH 6.8–7.8 Sparkling gouramiSparkling gourami72–82°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–82°Guppy 72–82°Sparkling gourami 72–82°
The green band is the temperature range both can live in.
456789Both: 6.8–7.5Guppy 6.8–7.8Sparkling gourami 6–7.5
The green band is the pH both tolerate.

Size to scale

Guppy · 2 inSparkling gourami · 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

GuppySparkling gourami
Temperature72–82 °F72–82 °F
pH6.8–7.86–7.5
Adult size2.0 in1.5 in
Minimum tank10 gal5 gal
TemperamentPeacefulPeaceful
Swims atTopTop
GroupGroups of 3+Groups of 4+
DietOmnivoreOmnivore

Better tank mates for guppies

All guppy tank mates

Better tank mates for sparkling gouramis

All sparkling gourami tank mates

Questions

Can guppies live with sparkling gouramis?

Yes. Guppies and sparkling gouramis get along in the same tank. Both are fine at 72–82°F. Plan on at least 10 gal.

What temperature suits both guppies and sparkling gouramis?

72–82 °F. Guppies need 72–82 °F, sparkling gouramis need 72–82 °F.

What size tank do guppies and sparkling gouramis need together?

At least 10 gal, set by the guppy. Add space for each extra fish.