%0 Journal Article %T Fish assemblages in a river with unusual gradient (Luongo, Africa-Zaire system), reflections on river zonation, and description of another new species %A Balon, Eugene %A Stewart, Donald %J Environmental Biology of Fishes %V 9 %N 4 %P 225-252 %@ 0378-1909 %D 2004-11-09 %I Kluwer Academic Publishers %~ DeepDyve