Ichthyofauna of streams of the Rio Sapucaí basin, upper Rio Paraná system, Minas Gerais, Brazil

Abstract: The Rio Sapucaí basin, in Minas Gerais State, Brazil, is one of the many watersheds of the upper Rio Paraná system. Ichthyofauna surveys in this basin, in general, are scarce. In addition, small rivers and streams of the region have been exposed to harmful antrhopogenic effectes” para “have been targets of anthropogenic actions (e.g., pollution) - which suggest that more ichthyological studies must be performed within the watershed. In this study we provide a survey of species that occur within three streams of the lower Rio Sapucaí basin. Samples were collected in April, July, and November 2017 and in May 2018. Collections resulted in 349 individuals belonging to 28 species, five orders, and 12 families. Among our findings are three putatively undescribed species and the first record of Oligosarcus argenteus and Pareiorhina hyptiorhachis within the Rio Paraná system.

摘要：巴西米纳斯吉拉斯州的萨普卡伊河（Rio Sapucaí）流域是巴拉那河上游水系的众多流域之一。总体而言，针对该流域的鱼类区系（Ichthyofauna）调查十分匮乏。此外，该区域的小型河流与溪流长期成为人为活动（如污染）的影响对象，这表明本流域亟需开展更多鱼类学相关研究。本研究针对萨普卡伊河下游流域的三处溪流展开鱼类物种调查，样本采集工作分别于2017年4月、7月、11月及2018年5月完成。本次采集共获得349尾个体，隶属于28个物种、5个目及12个科。本研究共发现3个疑似未被描述的新物种，同时首次在巴拉那河水系中记录到银寡脂鲤（Oligosarcus argenteus）与矮鳍帕雷奥鲶（Pareiorhina hyptiorhachis）的分布记录。