Can bettas live with rams?

Verdict
Yes

Yes. Bettas and rams make a good pair. Both are fine at 80–82°F. Plan on at least 20 gal.

BettaBetta76–82°F · pH 6.5–7.5 German blue ramGerman blue ram80–86°F · pH 5–7

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 80–82°Betta 76–82°German blue ram 80–86°
The green band is the temperature range both can live in.
456789Both: 6.5–7Betta 6.5–7.5German blue ram 5–7
The green band is the pH both tolerate.

Size to scale

Betta · 2.5 inGerman blue ram · 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

BettaGerman blue ram
Temperature76–82 °F80–86 °F
pH6.5–7.55–7
Adult size2.5 in2.5 in
Minimum tank5 gal20 gal
TemperamentSemi-aggressivePeaceful
Swims atTopBottom
GroupOne per tankAlone or in pairs
DietCarnivoreOmnivore

Better tank mates for bettas

All betta tank mates

Better tank mates for rams

All german blue ram tank mates

Questions

Can bettas live with rams?

Yes. Bettas and rams make a good pair. Both are fine at 80–82°F. Plan on at least 20 gal.

What temperature suits both bettas and rams?

80–82 °F. Bettas need 76–82 °F, rams need 80–86 °F.

What size tank do bettas and rams need together?

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