Can bettas live with plecos?

Verdict

Yes, with care

Yes, with care. Bettas and plecos can share a tank, but watch one thing. Plecos sometimes latch on to slow, flat fish like bettas and rasp their slime coat.

Betta76–82°F · pH 6.5–7.5

Common pleco72–86°F · pH 6.5–7.5

What to watch

Watch outPlecos sometimes latch on to slow, flat fish like bettas and rasp their slime coat.
Watch outPlecos grow to 15 inches and need 125 gallons, far more than a tank set up for bettas.

What works

Both are fine at 76–82°F.
pH 6.5–7.5 suits both.
They use different parts of the tank: bettas the top, plecos the bottom.

Water side by side

The green band is the temperature range both can live in.

The green band is the pH both tolerate.

Size to scale

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

	Betta	Common pleco
Temperature	76–82 °F	72–86 °F
pH	6.5–7.5	6.5–7.5
Adult size	2.5 in	15.0 in
Minimum tank	5 gal	125 gal
Temperament	Semi-aggressive	Peaceful
Swims at	Top	Bottom
Group	One per tank	Alone or in pairs
Diet	Carnivore	Herbivore

Better tank mates for bettas

All betta tank mates

Better tank mates for plecos