Can otocinclus live with elephant nose fish?

Verdict
Yes, with care

Yes, with care. Otocinclus and elephant nose fish can share a tank, but watch one thing. A grown elephant nose fish may treat small otocinclus as food, especially at night.

OtocinclusOtocinclus72–79°F · pH 6–7.5 Elephant nose fishElephant nose fish73–82°F · pH 6–7.5

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–79°Otocinclus 72–79°Elephant nose fish 73–82°
The green band is the temperature range both can live in.
456789Both: 6–7.5Otocinclus 6–7.5Elephant nose fish 6–7.5
The green band is the pH both tolerate.

Size to scale

Otocinclus · 2 inElephant nose fish · 9 in0"1"2"3"4"5"6"7"8"9"
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

OtocinclusElephant nose fish
Temperature72–79 °F73–82 °F
pH6–7.56–7.5
Adult size2.0 in9.0 in
Minimum tank20 gal55 gal
TemperamentPeacefulSemi-aggressive
Swims atBottomBottom
GroupGroups of 6+Alone or in pairs
DietHerbivoreCarnivore

Better tank mates for otocinclus

All otocinclus tank mates

Better tank mates for elephant nose fish

All elephant nose fish tank mates

Questions

Can otocinclus live with elephant nose fish?

Yes, with care. Otocinclus and elephant nose fish can share a tank, but watch one thing. A grown elephant nose fish may treat small otocinclus as food, especially at night.

What temperature suits both otocinclus and elephant nose fish?

73–79 °F. Otocinclus need 72–79 °F, elephant nose fish need 73–82 °F.

What size tank do otocinclus and elephant nose fish need together?

At least 55 gal, set by the elephant nose fish. Add space for each extra fish.