Can male bettas and pygmy corydoras live together?

Yes

Male bettas and pygmy corydoras can share a tank. Their water needs overlap and neither is known to bother the other.

Betta (male) Pygmy corydoras

Why

  • Their temperature and pH ranges overlap comfortably, and neither is known to nip, chase or eat the other.

What each one needs

Betta (male)Pygmy corydorasBoth
Temperature76–82°F (24–28°C)72–79°F (22–26°C)76–79°F (24–26°C)
pH6.5–7.56.4–7.46.5–7.4
Minimum tank5 gal (19 L)10 gal (38 L)10 gal (38 L)
Keep at least16
Adult size2.5 in (6.4 cm)1 in (2.5 cm)

The smallest tank for both

A 10 gallons (38 L) tank holds 1 betta (male) and 6 pygmy corydoras at about 50% of its stocking limit, which leaves room for more.

Other tank mates for male bettas

Other tank mates for pygmy corydoras