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Betta Fish

Betta splendens

The Siamese Fighting Fish is one of the most popular aquarium fish worldwide, known for its spectacular flowing fins and vivid colours. Males are highly territorial and must be kept individually. Available in countless colour morphs and fin types.

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Quick Facts

Max Size3"
Lifespan3–5 years
Min Tank5 gal
DietCarnivore
SchoolingNo
OriginAsia

Water Parameters

Temperature2428°C
pH Range67.5

Natural Habitat

Shallow rice paddies, floodplains, and slow-moving streams in Southeast Asia. Naturally found in warm, stagnant water with dense vegetation.

Region

Mekong Basin

Countries

Thailand, Cambodia, Laos, Vietnam

Feeding

Carnivorous — high-quality betta pellets, frozen bloodworms, brine shrimp, daphnia. Avoid low-quality flake food.

Compatible Tank Mates

Good Matches

Corydoras (in 20+ gal)Nerite SnailsAmano ShrimpKuhli LoachEmber Tetra (in 20+ gal)

Avoid

Other Betta malesGuppies (mistaken for rivals)Fin nippersBright-coloured or long-finned fish

Breeding

Bubble nest builder. Male builds nest at surface, courts female, wraps around her to release eggs. Male guards nest — remove female after spawning. Fry need infusoria.

Care Tips

Never house two males together

Minimum 5 gallons — bowls are cruelty

Needs a heater — they're tropical fish

Floating plants reduce stress and provide cover

Long-finned varieties struggle with strong current

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