For generations, Lake Victoria supported one of the world’s richest freshwater ecosystems. Beneath its surface lived hundreds of species of cichlid fish, many found nowhere else on Earth. These small, colourful fish had evolved over thousands of years to occupy different parts of the lake, from rocky shorelines to deeper waters. But a decision made in the middle of the 20th century changed the balance of life in the lake. According to National Geographic, Nile perch, a large predatory fish native to parts of Africa, were introduced in an effort to strengthen commercial fishing. The move created a profitable new industry and brought jobs to communities around the lake. It also triggered one of the most significant ecological changes ever recorded in a freshwater environment, reshaping food webs, driving numerous native fish species toward extinction, and permanently altering the lake's unique biodiversity and ecological stability.
Get breaking news anytime, anywhere. Download the TOI app now!
