Invasive Environmental Threats

A massive freshwater apex predator native to North America. Released into local ecosystems through the aquarium trade, its heavy armored scales and sharp, dual-row teeth make it a severe threat to local native fish populations.

Known as one of the largest and most aggressive species of snakeheads. Possessing extremely sharp teeth and parental protection behavior, it aggressively outcompetes native predator fish like Channa ara (සූඩොලූලා).

A nocturnal carnivorous species originating from Southeast Asia. Widely established in rivers such as the Kelani, it feeds heavily on smaller native cyprinids and crustaceans, significantly reducing local aquatic biodiversity.