一份报告警告说，淡水鱼的数量将出现 “灾难性” 下降，近三分之一的淡水鱼面临灭绝的威胁。

More than half the world's fish are found in lakes, rivers and wetlands – from carp and minnow to giant catfishare disappearing, and the European eelremained critically endangered.

在英国水域，鲟鱼和江鳕已经绝迹；鲑鱼正逐渐消失，而欧洲鳗鲡仍处于极度濒危状态。

According to the WWF, much of the decline is driven by the poor state of rivers – mostly as a result of pollution, dams and sewage.

世界自然基金会指出，造成数量下降的主因是河流状况不佳，这主要归咎于污染、筑坝和污水排放。