Can ember tetras live with chili rasboras?

Verdict
Yes

Yes. Ember tetras and chili rasboras make a good pair. Both are fine at 75–82°F. Plan on at least 5 gal.

Ember tetraEmber tetra73–84°F · pH 5.5–7 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°Ember tetra 73–84°Chili rasbora 75–82°
The green band is the temperature range both can live in.
456789Both: 5.5–7Ember tetra 5.5–7Chili rasbora 4–7
The green band is the pH both tolerate.

Size to scale

Ember tetra · 0.8 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

Ember tetraChili rasbora
Temperature73–84 °F75–82 °F
pH5.5–74–7
Adult size0.8 in0.8 in
Minimum tank5 gal5 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 8+
DietOmnivoreCarnivore

Better tank mates for ember tetras

All ember tetra tank mates

Better tank mates for chili rasboras

All chili rasbora tank mates

Questions

Can ember tetras live with chili rasboras?

Yes. Ember tetras and chili rasboras make a good pair. Both are fine at 75–82°F. Plan on at least 5 gal.

What temperature suits both ember tetras and chili rasboras?

75–82 °F. Ember tetras need 73–84 °F, chili rasboras need 75–82 °F.

What size tank do ember tetras and chili rasboras need together?

At least 5 gal, set by the ember tetra. Add space for each extra fish.