Fishing in Chad 1960s, 1970s, and 1980s, total production of fish was estimated at between 60,000 and 120,000 tons per year. But because these figures represent production for the Logone River and Lake Chad, which are shared with Cameroon, Niger, and Nigeria, Chad's fish production amounted to an estimated 70 percent of the total. The largest part of the catch – perhaps two-thirds – was consumed locally. In areas adjacent to urban centers, some portion - usually the best of the catch, such as large Nile perch (called "capitaine" in Chad) – was marketed fresh. Along Lake Chad and the river borders with
Colony of Niger Tibesti Cercle ceded to Chad Colony in French Equatorial Africa, and in 1932, the colony of French Upper Volta was divided amongst its neighbors, with the Cercles of Dori and Fada N'gourma ceded to Niger Colony. Niger Colony officials, unlike neighboring Chad, remained loyal to the French Vichy government after 1940, and thus closed its southern border (to Nigeria) and eastern border until 1944. On 31 December 1946 the Military Territories of N'Guigmi and Agadez were ceded to Niger Colony, leaving only Bilma Cercle as the last military-run section of modern Niger. This area in the far north east only