Can guppies and male bettas live together?

No

Guppies and male bettas should not share a tank.

Guppy Betta (male)

Why

  • Bettas often attack guppies because of their long, bright fins.

What each one needs

GuppyBetta (male)Both
Temperature72–82°F (22–28°C)76–82°F (24–28°C)76–82°F (24–28°C)
pH6.8–7.86.5–7.56.8–7.5
Minimum tank5 gal (19 L)5 gal (19 L)5 gal (19 L)
Keep at least31
Adult size2 in (5.1 cm)2.5 in (6.4 cm)

Better tank mates for guppies

Better tank mates for male bettas