长白山区主要冷水鱼生物学特性研究

Research on the Biological Characteristics of Main Cold-water Fish Resources in Changbai Mountain

长白山区有着丰富的冷水资源,通过对主要江河水域调查研究得知,主要冷水鱼为4目6科8种。长白山区冷水鱼栖息的最适温度为12～18℃,繁殖期水温一般不能超过13℃,食性大多属于肉食性,水质要求清澈无污染。调查发现,长白山区冷水鱼的种类有减少的趋势,种群数量也越来越少,甚至有的种类已成为珍稀或濒危物种。因此,保护长白山区冷水鱼资源应引起政府主管部门高度重视。

The water resources were rich in Changbai Mountain.The main rivers and waters were studied.It was confirmed that there were 4 orders,6 families,8 species.The optimal temperature for cold water fish in Changbai Mountain area was 12-18 ℃.The water temperature in the breeding season generally can not exceed 13 ℃.Most are carnivorous diet.They demand clean and non-polluted water.It was found that the types of cold water fish in Changbai Mountains showed a downward trend.And the population amount was less and less,and even some species had become rare or endangered species.Therefore,the protection of cold water fish resources in Changbai Mountains is imperative and government departments should attach great importance.