Length‐weight relationships of four fish species from the Hei River in northwest China

Abstract

Length‐weight relationships (LWRs) were assessed from four fish species in Hei River in northwest China. All specimens were collected using (fishing1 km along the river and 3 meters along the river bank) and netting (gill nets, nets: 30 × 1.2 m; mesh size: 3 × 3 cm) and shrimp cages (nets: 20.0 × 0.5 × 0.4m; mesh size: 0.5 cm) seasonally from April 2019 to October 2020. The gill nets and shrimp cages were soaked in water in the afternoon and pulled in around 10 a.m. the next day after an overnight stay. These specimens were measured for total length (L, 0.1 cm) and body weight (W, 0.1 g) while the specimens were fresh. The parameters for the LWRs were estimated with the basic statistical analyses. The study provided the new maximum total length for Gymnocypris chilianensis (21.0 cm) and Triplophysa tenuis (17.0 cm).

Length‐weight relationships of three fish species from the Shule River in China

“…The Shule River is 540 kilometers long and has serves a drainage area of 20197 square kilometers. However, due to the construction of water conservation projects along the Shule River, the natural habitats of these fishes have been destroyed to various extents, and fishery resources have declined sharply (Chen et al, 2017;Du et al, 2021;Lou et al, 2020;Zhang et al, 2018). In this study, physical characteristics of three indigenous fish species in the Shule River were obtained and we provide the first published reference on length-weight relationships for three native fishes of the Shule River.…”