Can discus live with chili rasboras?

Verdict
No

No. Discus and chili rasboras should not share a tank. At 6 inches a discus can swallow a 0.8-inch chili rasbora whole.

DiscusDiscus82–88°F · pH 5.5–7 Chili rasboraChili rasbora75–82°F · pH 4–7

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 82°Discus 82–88°Chili rasbora 75–82°
The green band is the temperature range both can live in.
456789Both: 5.5–7Discus 5.5–7Chili rasbora 4–7
The green band is the pH both tolerate.

Size to scale

Discus · 6 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

DiscusChili rasbora
Temperature82–88 °F75–82 °F
pH5.5–74–7
Adult size6.0 in0.8 in
Minimum tank55 gal5 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 5+Groups of 8+
DietCarnivoreCarnivore

Better tank mates for discus

All discus tank mates

Better tank mates for chili rasboras

All chili rasbora tank mates

Questions

Can discus live with chili rasboras?

No. Discus and chili rasboras should not share a tank. At 6 inches a discus can swallow a 0.8-inch chili rasbora whole.

What temperature suits both discus and chili rasboras?

82–82 °F. Discus need 82–88 °F, chili rasboras need 75–82 °F.

What size tank do discus and chili rasboras need together?

At least 55 gal, set by the discus. Add space for each extra fish.