The length–weight relationships (LWRs) for six native fish species from the Chapala Lake, Mexico, are described in this paper. The fish were caught monthly with the support of local fishermen from different landing sites. The daily catch is obtained using the nasa charalera (pot) and the gill net. Each fisherman can operate 20 pots daily at each fishing site for approximately six or seven months; this pot is a 2 m long cylinder, 0.5 m in diameter, with a mesh opening of 0.5 to 1 cm. Also, each fisherman can set between 10 and 20 gill nets each day at sunset and recover them in the morning, again for six or seven months. The length of the gill net is 30 m or more with a 2 m drop, with a 1 cm mesh size. The study provides basic data, morphometric data on length and weight of native species belonging to the genus Chirostoma. These species are of great importance for the local fishery with the Mesa Central of Mexico.

中文翻译：

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墨西哥热带湖六种鱼类的长度-重量关系

本文描述了来自墨西哥查帕拉湖的六种本地鱼类的长度-重量关系（LWR）。在来自不同登陆点的当地渔民的支持下，每月都捕获了这些鱼。每天的捕捞量是使用美国国家航空航天局（Nasa Charalera）（锅）和刺网。每个渔民每天可在每个渔场操作20个锅，持续约6到7个月；这个锅是一个2 m长的圆柱体，直径为0.5 m，网孔为0.5到1 cm。另外，每个渔民每天日落时可以设置10到20个刺网，并在早晨恢复，长达6到7个月。刺网的长度为30 m或更长，下落2 m，网眼尺寸为1 cm。该研究提供了属于手足类的天然物种的长度和重量的基础数据，形态计量学数据。这些物种对于墨西哥梅萨中部的当地渔业非常重要。