Betta

Betta

Betta splendens

Also known as: Siamese Fighting Fish, Betta Fish

💧 Freshwater 🔥 Aggressive 🟢 Easy 🥩 Carnivore

The most popular pet fish. Males have spectacular flowing fins and come in every color imaginable. Males are extremely aggressive toward other males.

Tank Size

5 gal
minimum (10+ preferred)

Temperature

76–82°F
24–28°C

pH Range

6.5–7.5
water acidity

Max Size

3"
7.6 cm

Lifespan

3–5 years
typical in captivity

Swim Level

Top
preferred zone

Care Notes

NEVER house two males together. Can live alone or with peaceful bottom-dwellers in 5+ gallon heated, filtered tanks. Bowls are cruel.

Feeding

Betta pellets, frozen bloodworms, and brine shrimp. Carnivore — needs protein-rich diet.

Compatible Tank Mates

None identified.

Use Caution With

Convict Cichlid 5" Salvini Cichlid 8" Jewel Cichlid 6" Redhead Cichlid 14" Red Zebra 5" Electric Blue Johanni 4" Demasoni Cichlid 3" Kenyi Cichlid 5" Bumblebee Cichlid 6" Auratus Cichlid 4" OB Mbuna 5" Maingano Cichlid 3"

Incompatible With

Neon Tetra 1.5" Cardinal Tetra 2" Rummy Nose Tetra 2" Ember Tetra 0.8" Black Skirt Tetra 2.5" Serpae Tetra 1.75" Congo Tetra 3.5" Glowlight Tetra 1.5" Harlequin Rasbora 2" Chili Rasbora 0.7" Celestial Pearl Danio 1" Zebra Danio 2"

Check Compatibility

Want to check if Betta is compatible with a specific fish? Use our compatibility checker to build your complete tank.