Aisne (river): geography, history, and significance Aisne (river) The Aisne is a river in northeastern France, a left tributary of the Oise, known since Roman times as Axona and notable for its role in regional geography, navigation, ecology, and…
Bug (river): Western Bug and Southern Bug in Eastern Europe Bug (river) Two distinct rivers named Bug flow in eastern Europe: the Western Bug (Poland, Belarus, Ukraine) and the Southern Bug (entirely in Ukraine). Overview of courses, basins, history, e…
Cleaner fish: mutualistic cleaners of reefs and freshwater habitats Cleaner fish Cleaner fish are species that remove parasites and dead tissue from other animals, forming mutualistic relationships important for fish health and ecosystem balance in marine and f…
List of rivers of Germany — major waterways and drainage basins List of rivers of Germany Overview and organization of Germany's rivers, their major drainage basins (North Sea, Baltic Sea, Black Sea), notable rivers and tributaries, uses, and historical importance.
List of rivers of Nigeria Overview and selected list of Nigeria's rivers: major systems (Niger, Benue, Cross), regional tributaries, economic uses, ecological importance and management issues.
