Can mollies live with chinese algae eaters?

Verdict
Yes

Yes. Mollies and chinese algae eaters make a good pair. Both are fine at 74–80°F. Plan on at least 75 gal.

MollyMolly72–82°F · pH 7.5–8.5 Chinese algae eaterChinese algae eater74–80°F · pH 6–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 74–80°Molly 72–82°Chinese algae eater 74–80°
The green band is the temperature range both can live in.
456789Both: 7.5–8Molly 7.5–8.5Chinese algae eater 6–8
The green band is the pH both tolerate.

Size to scale

Molly · 4 inChinese algae eater · 10 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

MollyChinese algae eater
Temperature72–82 °F74–80 °F
pH7.5–8.56–8
Adult size4.0 in10.0 in
Minimum tank20 gal75 gal
TemperamentPeacefulSemi-aggressive
Swims atTopBottom
GroupGroups of 3+Alone or in pairs
DietOmnivoreHerbivore

Better tank mates for mollies

All molly tank mates

Better tank mates for chinese algae eaters

All chinese algae eater tank mates

Questions

Can mollies live with chinese algae eaters?

Yes. Mollies and chinese algae eaters make a good pair. Both are fine at 74–80°F. Plan on at least 75 gal.

What temperature suits both mollies and chinese algae eaters?

74–80 °F. Mollies need 72–82 °F, chinese algae eaters need 74–80 °F.

What size tank do mollies and chinese algae eaters need together?

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