The rio da Dona is an important water body in the Rec?ncavo Sul basin used as a water supply for the neighboring towns and for agriculture, recreation and subsistence fishing. The knowledge about the ichthyofauna of this river is scarce. In this paper, an inventory of the fish fauna from rio da Dona basin and an identification key for the species recorded are presented. Additionally, taxonomic and conservationist issues are discussed. The specimens were collected in different sites along the upper, middle and lower courses of the rio da Dona. The fishes were anesthetized, fixed in formalin, conserved in ethanol, and identified. In addition to the material collected, specimens previously deposited in the ichthyological collection of the Museu de História Natural da Bahia were also analyzed. Twenty species, distributed into 16 genera, ten families, and four orders were recorded. One of these species, Aspidoras kiriri, is endemic to the rio da Dona. Four species, Cichla pinima, Coptodon rendalli, Poecilia reticulata and Serrasalmus brandtii, have been introduced into the river. Higher richness of native species has been recorded in the upper course of the rio da Dona, while in the middle and lower parts non-native species were also representative. Along the river, a series of anthropic impacts were observed, such as deforestation of native forest including the riparian vegetation, silting and dams, which can probably compromised the resident ichthyofauna.
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机译：RIO DA DONA是REC？NCavo SUL盆地的重要水体，用作邻近城镇的供水，娱乐，娱乐和生存。关于这条河的ICHTHYOFAUA的知识是稀缺的。在本文中，提出了来自Rio day Dona盆地的鱼类动物的库存和记录物种的识别键。此外，讨论了分类和保护主义问题。将标本沿着Rio Da Dona的上部，中部和下部课程收集在不同的部位。鱼类被麻醉，固定在福尔马林中，保守乙醇，并确定。除了收集的材料外，还分析了先前沉积在Museu deHistória天然达巴赫岛的清查学集合的标本。录制了20种，分为16属，十个家庭和四个订单。其中一种物种Aspidoras Kiriri，对Rio da Dona的流行。四种物种，CICHLA PINIMA，COPTODON Rendalli，Poecilia Reticulata和Serrasalmus Brandtii被引入到河里。在RIOD DONA的上层过程中，在里约热脉的上层课程中，较高的原生物种的丰富性较高，而下半部分别也是代表性的。沿着河流，观察了一系列人类影响，例如天然森林的森林砍伐，包括河岸植被，淤泥和水坝，可能可能损害了居民Ichthyofauna。
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