Wallago attu | 水產百科網

W.attuisfoundinlargeriversandlakesintwogeographicallydisconnectedregions(disjunctdistribution),withonepopulationlivingovermuchoftheIndian​ ...

Species of fish

Wallago attu is a freshwater catfish of the family Siluridae, native to South and Southeast Asia. It is commonly known as helicopter catfish or wallago catfish. Some regional designations, such as the Manipuri Sareng, the Odisha Balia(ବାଳିଆ), the Bengal Boal, the Sylheti Gual or the Malaysian and Indonesian Tapah are also occasionally used in English. W. attu is found in large rivers and lakes in two geographically disconnected regions (disjunct distribution), with one population living over much of the Indian Subcontinent and the other in parts of Southeast Asia. The species can reach a total length of 1 m (3 ft 3 in).[2]

It shares parts of its native range with the externally similar, but much larger Wallagonia leerii, and is subsequently often confused for it. It can, however, be differentiated by its relatively long and narrower head, as well a...