Can guppies live with chili rasboras?

Verdict
Yes

Yes. Guppies and chili rasboras make a good pair. Both are fine at 75–82°F. Plan on at least 10 gal.

GuppyGuppy72–82°F · pH 6.8–7.8 Chili rasboraChili rasbora75–82°F · pH 4–7

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–82°Guppy 72–82°Chili rasbora 75–82°
The green band is the temperature range both can live in.
456789Both: 6.8–7Guppy 6.8–7.8Chili rasbora 4–7
The green band is the pH both tolerate.

Size to scale

Guppy · 2 inChili rasbora · 0.8 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

GuppyChili rasbora
Temperature72–82 °F75–82 °F
pH6.8–7.84–7
Adult size2.0 in0.8 in
Minimum tank10 gal5 gal
TemperamentPeacefulPeaceful
Swims atTopMiddle
GroupGroups of 3+Groups of 8+
DietOmnivoreCarnivore

Better tank mates for guppies

All guppy tank mates

Better tank mates for chili rasboras

All chili rasbora tank mates

Questions

Can guppies live with chili rasboras?

Yes. Guppies and chili rasboras make a good pair. Both are fine at 75–82°F. Plan on at least 10 gal.

What temperature suits both guppies and chili rasboras?

75–82 °F. Guppies need 72–82 °F, chili rasboras need 75–82 °F.

What size tank do guppies and chili rasboras need together?

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