Can chili rasboras live with siamese algae eaters?

Verdict
Yes

Yes. Chili rasboras and siamese algae eaters get along in the same tank. Both are fine at 75–79°F. Plan on at least 30 gal.

Chili rasboraChili rasbora75–82°F · pH 4–7 Siamese algae eaterSiamese algae eater75–79°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–79°Chili rasbora 75–82°Siamese algae eater 75–79°
The green band is the temperature range both can live in.
456789Both: 6.5–7Chili rasbora 4–7Siamese algae eater 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Chili rasbora · 0.8 inSiamese algae eater · 6 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 rasboraSiamese algae eater
Temperature75–82 °F75–79 °F
pH4–76.5–7.5
Adult size0.8 in6.0 in
Minimum tank5 gal30 gal
TemperamentPeacefulPeaceful
Swims atMiddleBottom
GroupGroups of 8+Alone or in pairs
DietCarnivoreHerbivore

Better tank mates for chili rasboras

All chili rasbora tank mates

Better tank mates for siamese algae eaters

All siamese algae eater tank mates

Questions

Can chili rasboras live with siamese algae eaters?

Yes. Chili rasboras and siamese algae eaters get along in the same tank. Both are fine at 75–79°F. Plan on at least 30 gal.

What temperature suits both chili rasboras and siamese algae eaters?

75–79 °F. Chili rasboras need 75–82 °F, siamese algae eaters need 75–79 °F.

What size tank do chili rasboras and siamese algae eaters need together?

At least 30 gal, set by the siamese algae eater. Add space for each extra fish.