Can cherry barbs live with siamese algae eaters?

Verdict
Yes

Yes, cherry barbs and siamese algae eaters can live together. Both are fine at 75–79°F. Plan on at least 30 gal.

Cherry barbCherry barb73–81°F · pH 6–7.5 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°Cherry barb 73–81°Siamese algae eater 75–79°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Cherry barb 6–7.5Siamese algae eater 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Cherry barb · 2 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

Cherry barbSiamese algae eater
Temperature73–81 °F75–79 °F
pH6–7.56.5–7.5
Adult size2.0 in6.0 in
Minimum tank20 gal30 gal
TemperamentPeacefulPeaceful
Swims atMiddleBottom
GroupGroups of 6+Alone or in pairs
DietOmnivoreHerbivore

Better tank mates for cherry barbs

All cherry barb tank mates

Better tank mates for siamese algae eaters

All siamese algae eater tank mates

Questions

Can cherry barbs live with siamese algae eaters?

Yes, cherry barbs and siamese algae eaters can live together. Both are fine at 75–79°F. Plan on at least 30 gal.

What temperature suits both cherry barbs and siamese algae eaters?

75–79 °F. Cherry barbs need 73–81 °F, siamese algae eaters need 75–79 °F.

What size tank do cherry barbs and siamese algae eaters need together?

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