Can chinese algae eaters live with rosy barbs?

Verdict
Yes

Yes. Chinese algae eaters and rosy barbs make a good pair. Both are fine at 74–77°F. Plan on at least 75 gal.

Chinese algae eaterChinese algae eater74–80°F · pH 6–8 Rosy barbRosy barb64–77°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 74–77°Chinese algae eater 74–80°Rosy barb 64–77°
The green band is the temperature range both can live in.
456789Both: 6–7.5Chinese algae eater 6–8Rosy barb 6–7.5
The green band is the pH both tolerate.

Size to scale

Chinese algae eater · 10 inRosy barb · 4 in0"2"4"6"8"10"
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

Chinese algae eaterRosy barb
Temperature74–80 °F64–77 °F
pH6–86–7.5
Adult size10.0 in4.0 in
Minimum tank75 gal30 gal
TemperamentSemi-aggressiveSemi-aggressive
Swims atBottomMiddle
GroupAlone or in pairsGroups of 6+
DietHerbivoreOmnivore

Better tank mates for chinese algae eaters

All chinese algae eater tank mates

Better tank mates for rosy barbs

All rosy barb tank mates

Questions

Can chinese algae eaters live with rosy barbs?

Yes. Chinese algae eaters and rosy barbs make a good pair. Both are fine at 74–77°F. Plan on at least 75 gal.

What temperature suits both chinese algae eaters and rosy barbs?

74–77 °F. Chinese algae eaters need 74–80 °F, rosy barbs need 64–77 °F.

What size tank do chinese algae eaters and rosy barbs need together?

At least 75 gal, set by the chinese algae eater. Add space for each extra fish.