Species Overview

The Macrostoma Male (IB02JT) (Betta macrostoma) is a rare and highly sought-after wild betta species from Borneo, Indonesia. Known as a “Super Red” locality, this fish is prized for its vivid natural coloration, compact size, and preservation of authentic wild genetics. Unlike ornamental bettas, Macrostoma retains its streamlined body shape and natural behavior, making it a true collector’s fish.

Perfect for blackwater or softwater aquariums, this betta adds a striking presence to biotope-inspired setups.

🌟Appearance & Coloration

Brilliant deep red to crimson body coloration (“Super Red”)

Subtle metallic highlights along the fins and scales under proper lighting

Rounded, wild-type fins

Adult size: 4–6 cm

Color intensity improves in soft, slightly acidic water

The intense red coloration and compact size make it a standout centerpiece in planted or blackwater aquariums.

🌟Temperament & Behavior

Generally peaceful, though males are territorial during breeding

Paternal mouthbrooder: male carries eggs until fry hatch

Active mid- to lower-water swimmer

Prefers shaded areas, leaf litter, and dense plants

Best kept in species-only tanks or with carefully selected peaceful tank mates

🌟Tank Requirements

Minimum tank size: 20–30 liters (5–8 gallons) for a single fish

Gentle filtration recommended (sponge filter preferred)

Low water flow to mimic slow-moving blackwater habitats

Include driftwood, leaf litter, and dense plants for hiding spots

Secure lid required as bettas are jumpers

🌟Water Conditions

Temperature: 24–28°C (75–82°F)

pH: 4.5–6.5

Water Hardness: Very soft to soft

Ammonia/Nitrite: 0 ppm

Nitrate: <20 ppm

Regular small water changes (10–20% weekly) help maintain optimal water quality.

🌟Aquascaping Recommendations

Dark substrate enhances natural red coloration

Driftwood, leaf litter, and Indian almond leaves create tannin-rich blackwater

Floating plants provide shaded areas

Dense planting encourages natural behavior and reduces stress

🌟Feeding Habit & Diet

Macrostoma Male is carnivorous:

Live or frozen brine shrimp

Daphnia

Bloodworms (moderation)

High-quality micro pellets for bettas

Feed small portions 1–2 times daily and remove uneaten food to maintain water quality.

🌟Tank Mates & Compatibility

Best kept in species-only tanks

Can coexist with small, peaceful softwater fish in larger, heavily planted tanks

Avoid aggressive, large, or fin-nipping species

Male territoriality increases during breeding periods

🌟Breeding Information

Male is a paternal mouthbrooder

Eggs incubate in male’s mouth for 10–14 days

Soft, acidic water improves spawning success

Fry require infusoria or microworms in early stages

Breeding this species helps preserve wild genetics and is suitable for experienced aquarists.

🌟Care & Maintenance

Intermediate care level

Maintain stable water and soft, slightly acidic conditions

Monitor water quality regularly

Provide shaded hiding areas to reduce stress

🌟Ideal For

Wild betta collectors

Blackwater aquarium enthusiasts

Nano tank hobbyists

Breeders focused on preserving authentic wild genetics

🌟Why Choose Macrostoma Male (IB02JT) “Super Red”?

This rare wild betta combines intense crimson coloration, peaceful yet fascinating behavior, and authentic wild genetics. With softwater care, gentle filtration, and blackwater-inspired aquascaping, it becomes a captivating centerpiece for any home or collector aquarium.