辽东半岛及其沿海岛屿的淡水鱼类区系

Ichthyofaunal of Freshwater Fishes in Liaodong Peninsula and Offshore Islands

Liaodong peninsula is the southern area from the line fo the demarcation of Dayang river and Yalu river to the line of the demarcation of Daqing river and Liao river. There are 102 kinds of freshwater fishes, belonging to 34 families 84 genus, among which there are 51 kinds of original inhabitant fishes, 11 kinds of migration fishes, 26 kinds of estuarine fishes and 14 kinds of outside fishes. Further more, there are 14 kinds of freshwater fishes the offshore island, belonging to 5 families 14 genus. The compound body of the ichthyofaunal of the original inhabitant freshwater fishes is made up of one of the ancient upper tertiary period, one of the northern the foot of a mountain area, one of the northern plain, one of the river plain, one of the southern marsh, one of the north pacific temperate fishes. The characteristic of the ichthyofaunal is closed to Yalu river and there is no essential difference with the main stream of Liao river. The division into districts of the -freshwater fishes along with Yalu river fishes belongs to the Helong river subarea of northern area.