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

辽东半岛有淡水鱼类102种,隶属于34科(?)4属,其中土著纯淡水鱼类5种,洄游鱼类11种,河口鱼类26种,外来鱼类14种。沿海岛屿有淡水鱼类14种,隶属于5科14属。土著淡水鱼类区系复合体是由古代上第(?)纪复合体,北方山麓复合体,北方平原复合体,江河平原复合体,南方沼泽复合体和北太平洋温带鱼类复合体所组成。鱼类区系特征接近鸭绿江,与辽河本流有着本质差异。淡水鱼类地理区划,应与鸭绿江鱼类同属北方区的黑龙江亚区。

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.