Can angelfish live with otocinclus?

Verdict
Yes

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

AngelfishAngelfish76–84°F · pH 6–7.5 OtocinclusOtocinclus72–79°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 76–79°Angelfish 76–84°Otocinclus 72–79°
The green band is the temperature range both can live in.
456789Both: 6–7.5Angelfish 6–7.5Otocinclus 6–7.5
The green band is the pH both tolerate.

Size to scale

Angelfish · 6 inOtocinclus · 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

AngelfishOtocinclus
Temperature76–84 °F72–79 °F
pH6–7.56–7.5
Adult size6.0 in2.0 in
Minimum tank30 gal20 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleBottom
GroupAlone or in pairsGroups of 6+
DietOmnivoreHerbivore

Better tank mates for angelfish

All angelfish tank mates

Better tank mates for otocinclus

All otocinclus tank mates

Questions

Can angelfish live with otocinclus?

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

What temperature suits both angelfish and otocinclus?

76–79 °F. Angelfish need 76–84 °F, otocinclus need 72–79 °F.

What size tank do angelfish and otocinclus need together?

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