Walking Catfish
Clarias brachysoma
The Walking Catfish is a freshwater catfish endemic to Sri Lanka, found in a variety of freshwater habitats including rivers, streams, marshes, ponds, irrigation canals, and floodplain areas. It is a hardy species adapted to living in environments with low oxygen levels, thanks to its specialized air-breathing organs that allow it to survive in stagnant or poorly oxygenated waters. The species has an elongated, eel-like body and is mainly active at night. It is a bottom-dwelling predator that uses its barbels to search for food in muddy habitats. Its diet includes small fish, aquatic insects, worms, crustaceans, and other small organisms. The Walking Catfish is known for its ability to move over land for short distances between water bodies, especially during wet conditions, which gives it its common name. As a native Sri Lankan catfish, it plays an important role in wetland ecosystems and represents the unique adaptations of island freshwater fauna.