Can harlequin rasboras live with chinese algae eaters?

Verdict
Yes, with care

Yes, with care. Harlequin rasboras and chinese algae eaters can share a tank, but watch one thing. Chinese algae eaters grow to 10 inches and need 75 gallons, far more than a tank set up for harlequin rasboras.

Harlequin rasboraHarlequin rasbora72–80°F · pH 6–7.5 Chinese algae eaterChinese algae eater74–80°F · pH 6–8

What to watch

What works

Water side by side

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

Size to scale

Harlequin rasbora · 2 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

Harlequin rasboraChinese algae eater
Temperature72–80 °F74–80 °F
pH6–7.56–8
Adult size2.0 in10.0 in
Minimum tank10 gal75 gal
TemperamentPeacefulSemi-aggressive
Swims atMiddleBottom
GroupGroups of 6+Alone or in pairs
DietOmnivoreHerbivore

Better tank mates for harlequin rasboras

All harlequin rasbora tank mates

Better tank mates for chinese algae eaters

All chinese algae eater tank mates

Questions

Can harlequin rasboras live with chinese algae eaters?

Yes, with care. Harlequin rasboras and chinese algae eaters can share a tank, but watch one thing. Chinese algae eaters grow to 10 inches and need 75 gallons, far more than a tank set up for harlequin rasboras.

What temperature suits both harlequin rasboras and chinese algae eaters?

74–80 °F. Harlequin rasboras need 72–80 °F, chinese algae eaters need 74–80 °F.

What size tank do harlequin rasboras and chinese algae eaters need together?

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