Macrostoma Male (IB528) is a premium wild-type Betta macrostoma, prized for its deep red coloration, elongated body shape, and refined natural elegance. A true collector’s species from Borneo, this male is ideal for experienced aquarists who appreciate rare, high-value wild bettas.

🔴 Species Overview

• Scientific Name: Betta macrostoma

• Code: IB528

• Gender: Male

• Origin: Brunei / Northern Borneo

• Type: Wild Betta (Paternal Mouthbrooder)

Often called the “Brunei Beauty,” Betta macrostoma is one of the most sought-after wild betta species due to its rarity and striking red coloration.

✨ Key Characteristics

• Rich red to orange-red base coloration

• Distinct black banding along body and fins

• Elegant, elongated wild body form

• Large mouth (adapted for mouthbrooding)

• Strong yet graceful swimming behavior

• More reserved temperament compared to Betta splendens

Males display intensified coloration during courtship and territorial display.

📏 Size & Lifespan

• Adult Size: 8–10 cm

• Lifespan: 4–6 years with optimal care

• Slower growth compared to ornamental bettas

• Full color develops under stable, soft-water conditions

💧 Ideal Water Conditions

This species requires soft, acidic blackwater conditions to thrive:

• Temperature: 24–27°C

• pH: 4.5–6.5 (slightly acidic preferred)

• Hardness: 0–5 dGH (very soft water)

• TDS: Low (RO water often recommended)

• Filtration: Gentle sponge filter

• Flow: Minimal current

• Water Changes: 20–30% weekly

• Use botanicals (Indian almond leaves, driftwood) to simulate peat swamp habitat

Consistency is crucial—sudden parameter shifts can cause stress and appetite suppression.

🌿 Recommended Aquarium Setup

• Minimum Tank Size: 40 liters (single male)

• Larger tank recommended for pair or breeding setup

• Blackwater biotope aquascape

• Dim lighting to enhance red coloration

• Leaf litter and driftwood for cover

• Fine sand substrate

• Dense planting or shaded areas

• Tight-fitting lid (excellent jumper)

This species thrives in calm, low-light, tannin-rich environments.

🐟 Tank Mates Compatibility

• Best kept alone or as a compatible breeding pair

• Suitable with small, peaceful blackwater species

• Avoid aggressive, fast-moving, or fin-nipping fish

• Not recommended for busy community aquariums

Betta macrostoma prefers quiet surroundings with minimal disturbance.

🍽 Feeding Habit

• Carnivorous predator

• Prefers live and frozen foods:

  • Blackworms

  • Mosquito larvae

  • Bloodworms

  • Brine shrimp

• May accept high-quality soft pellets if trained

• Feed once or twice daily in moderate portions

• Remove uneaten food promptly

High-protein diet enhances coloration and breeding condition.

🧬 Breeding Notes

• Paternal mouthbrooder

• Male incubates eggs for approximately 14–21 days

• Requires calm, stress-free environment during brooding

• Fry are relatively large and accept baby brine shrimp

🌟 Why Choose Macrostoma Male (IB528)?

• Rare and highly sought-after wild betta species

• Elegant elongated body structure

• Deep red natural coloration

• Excellent breeding potential

• Premium collector-grade specimen

Macrostoma Male (IB528) is a refined choice for serious wild betta enthusiasts who value rarity, authenticity, and natural beauty over mass-produced ornamental strains.