10/15/2026
🐟 Meet the Brunei Beauty — Betta macrostoma!
Something special at River & Reef Aquatics! These fascinating wild-type bettas have plenty of character, and their breeding behaviour is remarkable: the male carries the eggs in his mouth while they develop! 💙
They’re best suited to experienced fishkeepers who can provide a quiet, carefully maintained aquarium.
🌿 Care essentials:
• Aquarium: A 20-gallon long or larger for a compatible pair, with plenty of hiding places. Monitor for aggression.
• Temperature: 20–25°C (68–77°F).
• Water: Very soft, acidic water; commonly recommended pH 4–6. Match their existing conditions and avoid sudden changes.
• Setup: Gentle filtration, subdued lighting, plants, driftwood and caves.
• Lid: A snug-fitting cover is essential—they’re excellent jumpers! Leave an air gap above the water.
• Food: Varied small frozen or live foods, including brine shrimp, daphnia and bloodworms. Some accept quality pellets.
• Tankmates: A dedicated species tank is the best starting point. Small shrimp may become snacks!
• Maintenance: Regular partial water changes with matched water; keep ammonia and nitrite at zero.
Stop by River & Reef Aquatics and chat with us about the right setup for these beautiful fish! 🐟🌿