北部湾北部我国沿岸海区鱼类区系的初步调查

北部湾北部沿岸的鱼类共有326种,按贝尔格分类系统,隶属于17目88科190属。软骨鱼类19种,占总数的5.8%,硬骨鱼类307种,占94.2%,其中鲈形目鱼类占优势,有200种。根据区系的温度特征,本海区鱼类可分为二大类群:暖水性鱼类273种,占83.7%;暖温性鱼类53种,占16.3%;没有冷水性和冷温性鱼类。生态类型以近底层和底层鱼类为主,中上层鱼类和珊瑚礁鱼类较少。本海区鱼类均为南海沿岸种,属南海鱼类区系的一个组成部分。

A PRELIMIANRY STUDY ON THE FISH FAUNA IN THE NORTHERN BEIBU GULF ALONG OUR COASTAL AREA

As we know at present,there are 17 orders,88 families,190 genera and 326 species or subspecies of fishes in the coastal waters of the northern Beibu Gulf along China.The chondrichthian fishes are represented by 3 orders, 9 families,12 genera and 19 species(5.8% of the total);the osteichthian fishes are represented by 14 orders,79 families,178 genera and 307 species (94.2% of the total) among which the perciformes fishes occupy a dominate position in number(200 species).According to the temperate nature of the fauna,the fishes in the studied region can be divided into two types:1) the warmwater fish including 273 species(83.7% of the total); 2) the warmtemperate fishes with 53 species(16.3% of the total);without any coldwater and coldtemperate species.According to ecological type, bottom or near bottom fishes are the dominant fish,fishes of middle or surface layer and coral reef are small.All of the fishes in this area are belong to the coast species in South China Sea and is one of the component part of South Sea fauna.