Can bettas live with neon tetras?
Sometimes, with care Bettas and neon tetras can live together only with care.
- Their temperature ranges barely overlap (only around 24–25°C).
Side by side
| Betta fish | Neon tetra | |
|---|---|---|
| Adult size | 6.5 cm (2.6 in) | 3.5 cm (1.4 in) |
| Temperature | 24–28°C (75–82°F) | 21–25°C (70–77°F) |
| pH | 6–8 | 5.5–7.5 |
| Minimum tank | 5 gallons (19 L) | 15 gallons (57 L) |
| Group size | Alone (only one male) | 8 or more |
| Temperament | Semi-aggressive | Peaceful |
| Swims at | Top | Middle |
Shared range: 24–25°C (75–77°F), pH 6–7.5.
Tank size for both
The smallest common tank that fits one betta fish and 8 neon tetras comfortably is about 15 gallons. Check your own tank in the stocking calculator.
What you need for bettas and neon tetras
Sized for a 15 gallon tank with one betta fish and 8 neon tetras.
Tank and equipment
- 15 gallon aquarium (tank or kit) (opens Amazon in a new tab)Bigger tanks are more stable and easier for beginners. How to choose
- Adjustable heater, 50 W (opens Amazon in a new tab)Holds about 76 °F (24.5 °C) in a room at 65 °F (18 °C). How to choose
- Aquarium thermometer (opens Amazon in a new tab)Check it daily: heaters can fail stuck on or off. How to choose
- Sponge filter for 20 gallons (opens Amazon in a new tab)Gentle flow, about 30–60 GPH, suits bettas, which prefer slow water. Needs a small air pump. How to choose
- About 35 lb of aquarium gravel (opens Amazon in a new tab)Enough for a layer about 2 in (5 cm) deep. Smooth gravel suits most community fish. How to choose
- Water conditioner (dechlorinator) (opens Amazon in a new tab)Removes chlorine and chloramine from tap water. Seachem Prime is a popular, concentrated choice. How to choose
- Liquid test kit (ammonia, nitrite, nitrate, pH) (opens Amazon in a new tab)Liquid kits are more accurate than strips. The API Freshwater Master Test Kit is the common choice. How to choose
- Gravel vacuum (siphon) (opens Amazon in a new tab)Cleans the gravel and does the water change in one go. How to choose
- LED aquarium light, about 24 in long (opens Amazon in a new tab)Match the light to the tank length. Basic LEDs grow easy plants. How to choose
Food and extras
- Betta pellets (opens Amazon in a new tab)Feed a few pellets once or twice a day; bettas overeat.
- Indian almond leaves (opens Amazon in a new tab)Release tannins that soft-water fish like bettas and rams enjoy.
- Micro pellets or flakes for small fish (opens Amazon in a new tab)Small enough for tetras, rasboras and other nano fish.
- Tight-fitting lid for a 15 gallon tank (opens Amazon in a new tab)Betta fish can jump out of an open tank.
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Better tank mates
For bettas
Frequently asked questions
Can bettas live with neon tetras?
Sometimes, with care. Their temperature ranges barely overlap (only around 24–25°C).
What size tank do bettas and neon tetras need together?
At least 15 gallons for one betta fish and 8 neon tetras, based on adult size, waste and school size. Bigger is easier.
What temperature suits both bettas and neon tetras?
Keep the tank at 24–25°C (75–77°F), where both are comfortable.
Verdicts come from our compatibility rules and researched species data. Individual fish vary, so add new fish gradually and watch them closely. Check other pairs in the compatibility checker.