Scleropages formosus, commonly known as the Asian Arowana, is a freshwater fish native to Southeast Asia. It thrives in slow-moving, blackwater rivers and swamps. Distinguished by its elongated body, large scales, and vibrant colors, it exhibits unique surface-feeding behavior and is revered in many cultures as a symbol of luck and prosperity.

Scleropages formosus, commonly known as the Asian arowana, is native to Southeast Asia. Its geographical distribution includes countries such as Indonesia, Malaysia, Thailand, Cambodia, Vietnam, and parts of Myanmar. It is primarily found in the river basins and freshwater bodies within these regions.

The Asian arowana typically inhabits slow-moving, soft, and acidic waters such as blackwater rivers, flooded forests, and peat swamps. These environments are characterized by dense vegetation and submerged roots, providing ample cover and feeding grounds. The water temperature in these habitats generally ranges from 24°C to 30°C (75°F to 86°F), and the pH levels are usually between 4.5 and 6.5, reflecting the acidic conditions.

Ecologically, the Asian arowana occupies the niche of a top predator in its native freshwater ecosystems. It primarily feeds on smaller fish, crustaceans, and insects, utilizing its keen eyesight and swift swimming capabilities. The species is known for its territorial behavior, often defending its territory against other fish. Its adaptations to the blackwater environments, such as its ability to thrive in low-visibility conditions, make it a unique and specialized predator within its habitat.