Can angelfish live with siamese algae eaters?

Verdict
Yes

Yes, angelfish and siamese algae eaters can live together. Both are fine at 76–79°F. Plan on at least 30 gal.

AngelfishAngelfish76–84°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: 76–79°Angelfish 76–84°Siamese algae eater 75–79°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Angelfish 6–7.5Siamese algae eater 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Angelfish · 6 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

AngelfishSiamese algae eater
Temperature76–84 °F75–79 °F
pH6–7.56.5–7.5
Adult size6.0 in6.0 in
Minimum tank30 gal30 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleBottom
GroupAlone or in pairsAlone or in pairs
DietOmnivoreHerbivore

Better tank mates for angelfish

All angelfish tank mates

Better tank mates for siamese algae eaters

All siamese algae eater tank mates

Questions

Can angelfish live with siamese algae eaters?

Yes, angelfish and siamese algae eaters can live together. Both are fine at 76–79°F. Plan on at least 30 gal.

What temperature suits both angelfish and siamese algae eaters?

76–79 °F. Angelfish need 76–84 °F, siamese algae eaters need 75–79 °F.

What size tank do angelfish and siamese algae eaters need together?

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