Can bettas live with clown plecos?

Verdict
Yes

Yes. Bettas and clown plecos get along in the same tank. Both are fine at 76–82°F. Plan on at least 20 gal.

BettaBetta76–82°F · pH 6.5–7.5 Clown plecoClown pleco73–82°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 76–82°Betta 76–82°Clown pleco 73–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Betta 6.5–7.5Clown pleco 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Betta · 2.5 inClown pleco · 3.5 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

BettaClown pleco
Temperature76–82 °F73–82 °F
pH6.5–7.56.5–7.5
Adult size2.5 in3.5 in
Minimum tank5 gal20 gal
TemperamentSemi-aggressivePeaceful
Swims atTopBottom
GroupOne per tankAlone or in pairs
DietCarnivoreHerbivore

Better tank mates for bettas

All betta tank mates

Better tank mates for clown plecos

All clown pleco tank mates

Questions

Can bettas live with clown plecos?

Yes. Bettas and clown plecos get along in the same tank. Both are fine at 76–82°F. Plan on at least 20 gal.

What temperature suits both bettas and clown plecos?

76–82 °F. Bettas need 76–82 °F, clown plecos need 73–82 °F.

What size tank do bettas and clown plecos need together?

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