Can guppies live with neon tetras?

Yes, they make good tankmates. Good tankmates. Keep both at 72–80°F.

By Andy · Updated October 31, 2026 · Tankmate guide

Yes, they make good tankmates. Good tankmates. Keep both at 72–80°F.

Yes

Verdict

72–80°F

Shared temperature

10 gal

Smallest tank

The two fish side by side

Fish	Adult size	Temperature	Min. tank	Keep	Watch for
Guppy	2 in	72–80°F	10 gal	3 or more	long fins
Neon tetra	1.5 in	72–80°F	10 gal	6 or more	peaceful

Set the heater to about 76°F, in the middle of the range they share (72–80°F).
Use a tank of at least 10 gallons. Check the numbers with the stocking calculator.
Keep guppies in a group of 3 or more. A big group is calmer and more colorful.
Keep neon tetras in a group of 6 or more. A big group is calmer and more colorful.
Add plenty of plants and cover so every fish can get out of sight.

For guppies: Cherry shrimp, Corydoras (bronze or peppered), Endler's livebearer, Molly, Platy, Swordtail
For neon tetras: Betta (male), Cherry shrimp, Dwarf gourami, Amano shrimp, Black skirt tetra, Bristlenose pleco

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