Length‐Weight relationship (LWRs) were estimated for four fish species occurring in the Ibicui River drainage basin, southern Brazil. Samples were captured monthly during the spring and summer seasons (October 2018 to March 2019). The fish were caught with gillnets of different meshes (15, 20, 25, 30, 40 mm between adjacent nodes) and a trawl net (5 mm mesh between adjacent nodes) Eighteen excursions were realized in three sites, with a length of approximately 100 km, in third‐order flux, all distributed in sub‐basin Ibicui River. The captured tools were installed at the end of the day (6 p.m.) and removed around 6 a.m. the next day. The present study provides the length‐weight relationship for four species (Astyanax dissensos, Galeocharax humeralis, Hypostomus roseopunctatus e Hypostomus uruguayensis).

中文翻译：

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巴西南部伊比库伊河捕获的四种鱼类的长度-体重关系

对发生在巴西南部伊比库伊河流域的四种鱼类的长度-体重关系 (LWR) 进行了估计。在春季和夏季（2018 年 10 月至 2019 年 3 月）期间，每月采集一次样本。使用不同网目（相邻节点之间 15、20、25、30、40 毫米）和拖网（相邻节点之间 5 毫米网孔）捕获鱼 在三个地点实现了 18 次远足，长度约为 100 km, 在三阶通量中, 都分布在子流域伊比翠河中。捕获的工具在一天结束时（下午 6 点）安装，并在第二天早上 6 点左右移除。本研究提供了四种物种（Astyanax dissensos、Galeocharax humeralis、Hypostomus roseopunctatus e Hypostomus uruguayensis）的长度-体重关系。