Can ember tetras and otocinclus live together?

Yes

Ember tetras and otocinclus can share a tank. Their water needs overlap and neither is known to bother the other.

Ember tetra Otocinclus

Why

  • Their temperature and pH ranges overlap comfortably, and neither is known to nip, chase or eat the other.

What each one needs

Ember tetraOtocinclusBoth
Temperature73–84°F (23–29°C)72–79°F (22–26°C)73–79°F (23–26°C)
pH5.5–7.06.0–7.56.0–7.0
Minimum tank10 gal (38 L)10 gal (38 L)10 gal (38 L)
Keep at least64
Adult size0.8 in (2 cm)1.8 in (4.6 cm)

The smallest tank for both

A 10 gallons (38 L) tank holds 6 ember tetras and 4 otocinclus at about 64% of its stocking limit, which leaves room for more.

Other tank mates for ember tetras

Other tank mates for otocinclus