Can otocinclus live with glofish?

Verdict
Yes

Yes, otocinclus and glofish can live together. Both are fine at 72–79°F. Plan on at least 20 gal.

OtocinclusOtocinclus72–79°F · pH 6–7.5 GloFish tetraGloFish tetra72–80°F · pH 6–7.5

Why it works

Water side by side

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

Size to scale

Otocinclus · 2 inGloFish tetra · 2.5 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

OtocinclusGloFish tetra
Temperature72–79 °F72–80 °F
pH6–7.56–7.5
Adult size2.0 in2.5 in
Minimum tank20 gal15 gal
TemperamentPeacefulSemi-aggressive
Swims atBottomMiddle
GroupGroups of 6+Groups of 6+
DietHerbivoreOmnivore

Better tank mates for otocinclus

All otocinclus tank mates

Better tank mates for glofish

All glofish tetra tank mates

Questions

Can otocinclus live with glofish?

Yes, otocinclus and glofish can live together. Both are fine at 72–79°F. Plan on at least 20 gal.

What temperature suits both otocinclus and glofish?

72–79 °F. Otocinclus need 72–79 °F, glofish need 72–80 °F.

What size tank do otocinclus and glofish need together?

At least 20 gal, set by the otocinclus. Add space for each extra fish.