What is the longest river on the island of New Guinea?
Fauna of New Guinea including the Fly, Sepik and Mamberamo, which all are rich in fishes. The Fly River Basin, the most species rich river of the island, has 105 fish species, while the Sepik River Basin has 57 species. Among New Guinea's lake systems, the most important in terms of endemic fishes are Kutubu (13 endemics), Ajamaru (4 endemics), and Sentani (4 endemics). The gudgeons "Oxyeleotris caeca" from the upper Kikori River system in Papua New Guinea and "O. colasi" from the Lengguru area in Western New Guinea are the only described species of cave-adapted fish from the island. Introduced species and pollution
Birim River (New Guinea) mining operations by the Ok Tedi Mining Limited at what remains of Mount Fubilan. Since 1984, the people of the area have blamed the mine for general declines in crops and fish yields. Birim River (New Guinea) The Birim River or "Ok Birim" in the western province of New Guinea is a tributary of the Ok Tedi River, which is in turn a tributary of the north Fly River. The Birim river joins the Ok Tedi river from the west between Ningerum and Bige. The Birim river area is inhabited by the Yonggom tribe. They practise tropical forest Swidden agriculture.