【摘要】 <正> 1 自然概况沽河位于黑龙江省逊克县境内,全长250公里,河流呈树枝状,从南向北流经小兴安岭,然后汇入逊比拉河进入黑龙江。河流两岸森林茂密,人烟稀少;水量充沛,水质清澈,基本保持原始自然状态。1987年被黑龙江省列为冷水鱼自然保护区,但该河鱼类资源状况还未见报道。由于沾河水能资源十分丰富,为开发水能资源,设计在河流下游修建一座大型水电站。为了给这项工程建设对鱼类的影响做出预测,1989年,7月、9月,我们两次对沾更多还原

【Abstract】 Throughout invetigation, we collected the fish specimen of 35 species, 13 families, they mainly belongs to three varities as below: cooling wayer fish, sub-cooling fish, warming water fish, and perticularly, the resource quantitres of cooling water and sub-cooling water fish is profuse. The majority of species has definete habit of migration. After the reservoir is built completely, it will impact fish on some aspects below: effects on composition of the fish species; effects on multiply, yield, migration of the fish.更多还原