Can bettas live with corydoras?

Yes, they make good tankmates. Good tankmates. Keep both at 76–78°F.

By Andy · Updated October 31, 2026 · Tankmate guide

Yes, they make good tankmates. Good tankmates. Keep both at 76–78°F.

Yes

Verdict

76–78°F

Shared temperature

20 gal

Smallest tank

The two fish side by side

Fish	Adult size	Temperature	Min. tank	Keep	Watch for
Betta (male)	2.5 in	76–82°F	5 gal	Alone or as a pair	long fins
Corydoras (bronze or peppered)	2.5 in	70–78°F	20 gal	6 or more	peaceful

Set the heater to about 77°F, in the middle of the range they share (76–78°F).
Use a tank of at least 20 gallons. Check the numbers with the stocking calculator.
Keep corydoras in a group of 6 or more. A big group is calmer and more colorful.
Corydoras feed on the bottom, so drop in sinking pellets or wafers after the lights go out.
Have a backup plan. Every betta has its own temper, so keep a spare tank or divider ready in case it attacks.
Add plenty of plants and cover so every fish can get out of sight.

For bettas: Amano shrimp, Ember tetra, Harlequin rasbora, Mystery snail, Neon tetra, Nerite snail
For corydoras: Angelfish, Bristlenose pleco, Guppy, Tiger barb, Amano shrimp, Black skirt tetra

Want to check a whole tank? Pick up to 8 fish in the fish compatibility checker, which opens with this pair already filled in.

Planning a whole tank? Your First Aquarium includes ready-made stocking plans and care cards for 15 beginner fish. Get the guide for $12