Can chili rasboras live with black neon tetras?

Verdict
Yes

Yes, chili rasboras and black neon tetras can live together. Both are fine at 75–81°F. Plan on at least 15 gal.

Chili rasboraChili rasbora75–82°F · pH 4–7 Black neon tetraBlack neon tetra73–81°F · pH 5.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–81°Chili rasbora 75–82°Black neon tetra 73–81°
The green band is the temperature range both can live in.
456789Both: 5.5–7Chili rasbora 4–7Black neon tetra 5.5–7.5
The green band is the pH both tolerate.

Size to scale

Chili rasbora · 0.8 inBlack neon tetra · 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

Chili rasboraBlack neon tetra
Temperature75–82 °F73–81 °F
pH4–75.5–7.5
Adult size0.8 in1.5 in
Minimum tank5 gal15 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 8+Groups of 6+
DietCarnivoreOmnivore

Better tank mates for chili rasboras

All chili rasbora tank mates

Better tank mates for black neon tetras

All black neon tetra tank mates

Questions

Can chili rasboras live with black neon tetras?

Yes, chili rasboras and black neon tetras can live together. Both are fine at 75–81°F. Plan on at least 15 gal.

What temperature suits both chili rasboras and black neon tetras?

75–81 °F. Chili rasboras need 75–82 °F, black neon tetras need 73–81 °F.

What size tank do chili rasboras and black neon tetras need together?

At least 15 gal, set by the black neon tetra. Add space for each extra fish.