Spatial distribution of ichthyofauna in the northern Alboran Sea (western Mediterranean)

This study describes the four main demersal fish assemblages identified along the continental shelf and slope (30–800 m depth) of the northern Alboran Sea (western Mediterranean), based on the analysis of the MEDITS (International bottom trawl survey in the Mediterranean) 12-year data series. We collected 186 fish species belonging to three classes, 24 orders and 69 families. Taxonomically, the order Perciformes was the most diverse, represented by 18 families and 58 species. Each assemblage had particular characteristics of abundance, biomass, mean fish weight and species richness. The geographical differences associated with the distribution of some species occurred within shelf assemblages. The middle slope was characterised by the highest similarity between samples, probably due to its lower environmental variability compared to that of the other assemblages.     

滇西北中甸地区的鱼类

滇西北中甸地区共有鱼类20种(亚种),分别隶属于2目4科15属;剔除3种引入种,原产土著种类仅有17种.区系成分以鲤科种数最多,共有8种.鱼类区系特点表现为:区系成分单一,地域划分显著,垂直分布明显和凶猛鱼类稀少.文中还对中甸鱼类的生物学特点,资源现状,资源的持续利用与保护等做了阐述和讨论.最后,就动物地理区划作了简要讨论,认为中甸地区是动物地理区划中的一个关键地区.     

韩江淡水鱼类区系

韩江为广东省第二次大河,拥有１０２种淡水鱼类。隶属于１６科,７１属,其中鲤科计５６种,鳅科计７种,平鳍鳅科计８种,即鲤开目鱼类在总体上占有最优的势地位。在鱼类区系的组成来看,韩江鱼类与榕江鱼类,九砻江鱼类十分相似,这与它们其有相似的地理状况的河道,以及冰河期间有过联系有关。这些河系的鱼类在早第三纪开始形成。由南亚与东亚地区的淡水鱼类综合而成：一此属如小条鳅属、沙鳅属、异Ｌｉｅ属、白甲鱼亚属从南亚进     

独龙江中下游流域的鱼类区系

独龙江流域位于云南省的西北部,北与青藏高原相连,西与缅甸毗邻.中国科学院昆明动物研究所于2004年10月~11月对该水域鱼类资源进行了具体调查,共计采集到鱼类标本883号,分别属于鲤形目、鲇形目;裂腹鱼亚科、野鲮亚科、鮡科;共2目、3科(亚科)、6属、7种.对独龙江鱼类区系与其相邻水系的鱼类区系进行比较分析,认为独龙江水系的鱼类区系与怒江水系的鱼类区系有着更近的渊缘关系.