Known for their large size and striking colors. They have unique and intricate patterns on their bodies.
Out of Stock
Known for their large size and striking colors. They have unique and intricate patterns on their bodies.
Betta macrostoma has a torpedo-shaped body, striking orange to copper color, prominent black vertical gill bars, and a signature black "lipstick" mark around its mouth. Males have broader heads and more vivid color than females.
3-5 years
Carnivorous; prefers live or frozen foods such as bloodworms, brine shrimp, and small insects.
One of the most beautiful and fascinating Betta species, Betta macrostoma is ideal for experienced aquarists looking for a challenge. Their rare beauty, interesting behavior, and need for pristine, stable environments make them highly prized and rewarding to keep.
Advanced
20 gallons for a pair
5.0–6.5
1–6 dGH (very soft water)
72–80°F (22–27°C)
3–4 inches (7.5–10 cm)
Peaceful dither fish (e.g., small rasboras), or species-only setup. Best kept as bonded pairs in a planted or structured environment.
Other anabantoids, aggressive fish, or anything fast-moving or fin-nipping
Betta macrostoma
Osphronemidae
Brunei, Borneo
Pair or species-only; males can be territorial but generally peaceful
Feeds eagerly on live insects and crustaceans. Frozen foods like bloodworms or mysis shrimp are accepted with training. Needs variety and high-protein intake to thrive. Feed lightly to avoid bloating and maintain water quality.
Mouthbrooder; male incubates eggs for 10–20 days
A paternal mouthbrooder. After spawning, the male collects the eggs and holds them in his mouth for up to 20 days. He will not eat during this period. Once fry are released, they are large and capable of feeding on baby brine shrimp. Males can swallow or spit eggs if stressed.
Soft, acidic water with heavy use of botanicals like Indian almond leaves or driftwood to create a blackwater habitat. Avoid hard tap water. Low lighting and leaf litter are essential for natural behavior and breeding.
Extremely sensitive to water changes and unstable conditions. Susceptible to velvet, columnaris, and stress-related illnesses. Needs ultra-clean water and a stable environment with low flow.
Can be aggressive, especially towards other male Betta fish. Best kept alone or in a species-specific setup.
Timid and serene in behavior. Males are doting fathers during mouthbrooding and may become reclusive. Minimal aggression, and pairs often bond well. Territorial displays are slow and dramatic but not violent.
Betta macrostoma is the crown jewel of wild-type bettas. Known for its large mouth and graceful elegance, this species requires soft, acidic water and peace. The unique mouthbrooding breeding method and vivid coloration make it a must-have for passionate Betta lovers willing to meet its specific needs.