The Macrostoma originates from the pristine rainforest streams of Brunei and Malaysia, where it thrives in tannin-rich, acidic waters among dense vegetation. This species demands precise conditions to flourish: soft water with a pH between 4.0 and 6.5, temperatures of 72-80°F, and abundant hiding places that replicate its natural refuge. Their cautious temperament reflects their wild environment, where they navigate between aquatic plants while remaining vigilant against larger predators. Recreating these specific parameters—dark, sheltered conditions with slow-moving water—is essential for maintaining the health and natural behavior of this remarkable Southeast Asian betta.
