Can bolivian rams live with rummy nose tetras?

Verdict
Yes

Yes. Bolivian rams and rummy nose tetras make a good pair. Both are fine at 75–79°F. Plan on at least 20 gal.

Bolivian ramBolivian ram72–79°F · pH 6–7.5 Rummy nose tetraRummy nose tetra75–84°F · pH 5.5–7

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–79°Bolivian ram 72–79°Rummy nose tetra 75–84°
The green band is the temperature range both can live in.
456789Both: 6–7Bolivian ram 6–7.5Rummy nose tetra 5.5–7
The green band is the pH both tolerate.

Size to scale

Bolivian ram · 3 inRummy nose tetra · 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

Bolivian ramRummy nose tetra
Temperature72–79 °F75–84 °F
pH6–7.55.5–7
Adult size3.0 in2.0 in
Minimum tank20 gal20 gal
TemperamentPeacefulPeaceful
Swims atBottomMiddle
GroupAlone or in pairsGroups of 6+
DietOmnivoreOmnivore

Better tank mates for bolivian rams

All bolivian ram tank mates

Better tank mates for rummy nose tetras

All rummy nose tetra tank mates

Questions

Can bolivian rams live with rummy nose tetras?

Yes. Bolivian rams and rummy nose tetras make a good pair. Both are fine at 75–79°F. Plan on at least 20 gal.

What temperature suits both bolivian rams and rummy nose tetras?

75–79 °F. Bolivian rams need 72–79 °F, rummy nose tetras need 75–84 °F.

What size tank do bolivian rams and rummy nose tetras need together?

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