松花江干流嫩江至同江段鱼类物种资源调查

为了解松花江鱼类种类组成的现状及变化趋势，笔者于2010年5-10月，通过走访当地居民、农贸市场调查、标本采集等形式对松花江干流嫩江至同江段鱼类资源进行调查研究。结果表明，调查区域共发现鱼类69种，隶属于2纲8目18科，占黑龙江省鱼类种类的63.9%，其中鲤科鱼类的种数最多，计有35种，占50.7%，多为重要的经济鱼类；其次为鳅科，计有7种，占10.2%；鲑科和鲿科各4种，各占5.8%，其他鱼类14科19种，占27.5%。调查结果显示，松花江干流嫩江至同江段的鱼类资源有减少的趋势，并提出了相应的保护对策。

A Research of the Songhua River Fish Species Resource from Nenjiang Section to Tongjiang Section

In order to understand current situation and development trend of the Songhua river fish species composition,the fish resources in the Songhua River were investigated based on interviewing with local residents,trade market investigation and sample collection from May to October in 2010.It is found that the total number of fish species was 69 in the survey area,belonging to 2 classes,8 orders,18 families,accounting for 63.9% of Heilongjiang Province ＇ s fish species.Cyprinidae had the largest species （35）,accounting for about 50.7% of the total number.Cobitidae had the next largest species （7）,accounting for about 10.2% of the total.Both Aslmonids and Bagridae had 4 species,accounting for 5.8% of the total.The other 19 species accounting for 27.5% belonged to another 14 families.According to the results of the survey,the fish resources had a decreasing trend,compared with the Songhua River from the Nenjiang section to the Tongjiang section,and relevant suggestions were proposed for this phenomenon.