Can angelfish live with harlequin rasboras?

Verdict
Yes

Yes, angelfish and harlequin rasboras can live together. Both are fine at 76–80°F. Plan on at least 30 gal.

AngelfishAngelfish76–84°F · pH 6–7.5 Harlequin rasboraHarlequin rasbora72–80°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 76–80°Angelfish 76–84°Harlequin rasbora 72–80°
The green band is the temperature range both can live in.
456789Both: 6–7.5Angelfish 6–7.5Harlequin rasbora 6–7.5
The green band is the pH both tolerate.

Size to scale

Angelfish · 6 inHarlequin rasbora · 2 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

AngelfishHarlequin rasbora
Temperature76–84 °F72–80 °F
pH6–7.56–7.5
Adult size6.0 in2.0 in
Minimum tank30 gal10 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleMiddle
GroupAlone or in pairsGroups of 6+
DietOmnivoreOmnivore

Better tank mates for angelfish

All angelfish tank mates

Better tank mates for harlequin rasboras

All harlequin rasbora tank mates

Questions

Can angelfish live with harlequin rasboras?

Yes, angelfish and harlequin rasboras can live together. Both are fine at 76–80°F. Plan on at least 30 gal.

What temperature suits both angelfish and harlequin rasboras?

76–80 °F. Angelfish need 76–84 °F, harlequin rasboras need 72–80 °F.

What size tank do angelfish and harlequin rasboras need together?

At least 30 gal, set by the angelfish. Add space for each extra fish.