Displays vibrant red coloration throughout their body, making them visually striking.
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Displays vibrant red coloration throughout their body, making them visually striking.
Small-bodied, vibrant red coloration with dark vertical bars and iridescent blue or green spots on fins. Males have more vivid color and extended dorsal/anal fins.
2-3 years
Carnivorous; prefers high-quality Betta pellets or flakes, supplemented with occasional live or frozen foods.
Betta rubra is a perfect candidate for a biotope or blackwater aquarium. Though less known than splendens, its personality and breeding behavior make it a rewarding species for experienced Betta keepers.
Intermediate
10 gallons for a pair; 20+ gallons for a group
4.5–6.5
1–6 dGH (very soft)
73–78°F (23–26°C)
1.5 inches (3.8 cm)
Peaceful rasboras, small shrimp (with caution), pygmy corydoras. Best in a species-only blackwater tank.
Fin-nipping or aggressive species, large or fast-moving fish. Avoid strong filtration and bright lighting.
Betta rubra
Osphronemidae
Aceh, northern Sumatra, Indonesia
Peaceful; can be kept in pairs or small groups with caution. Males may be mildly territorial.
Best fed on live foods such as mosquito larvae or baby brine shrimp. Frozen foods are accepted. Quality is more important than quantity due to small size and sensitive digestion.
Mouthbrooder; male carries eggs in his mouth for 12–18 days
After courtship, the female releases eggs which the male collects and incubates in his mouth. He holds them for about 12–18 days and then releases free-swimming fry. Best to isolate the male during brooding to avoid stress-induced egg loss.
Requires soft, acidic water, low TDS, and blackwater conditions. Indian almond leaves, peat filtration, and low-light settings mimic natural habitat and improve health.
Susceptible to velvet and other stress-related infections. Sensitive to poor water quality and sudden parameter shifts. Needs tannin-rich, stable environments.
Can be aggressive, especially towards other male Betta fish. Best kept alone or in a species-specific setup.
Calm and peaceful; males are protective during brooding but not overly aggressive. Works well in planted tanks with cover and hiding spots.
Betta rubra may be small, but its beauty and elegance rival the best. These wild gems thrive in soft, tannin-stained water and appreciate peaceful surroundings. They’re ideal for hobbyists wanting to experience the more natural, subtle side of the Betta world.