Pangasianodon hypophthalmus, commonly known as the Iridescent Shark, is a freshwater fish native to the Mekong and Chao Phraya river basins in Southeast Asia. Known for its distinctive iridescent sheen, this species thrives in large rivers and migrates seasonally. It is a social fish, often found in schools, and has a diet that includes crustaceans, fish, and plant matter.

Pangasianodon hypophthalmus, also known as the Iridescent Shark or Striped Catfish, is native to Southeast Asia. Its geographical distribution primarily includes the Mekong River Basin and the Chao Phraya River in countries such as Thailand, Cambodia, Laos, and Vietnam. The species is also found in other river systems within these countries.

Pangasianodon hypophthalmus typically inhabits large rivers with slow-moving currents. These environments are characterized by tropical climates with warm temperatures that can range from 22°C to 26°C (72°F to 79°F). The rivers often have murky water due to silt and organic materials.

The Iridescent Shark occupies an ecological niche as a benthopelagic species, meaning it can be found both near the bottom and in open water, feeding on a diverse diet that includes crustaceans, smaller fish, and plant matter. This adaptability allows it to thrive in its native riverine environments.