Length-weight relationships of three endemic fish species from the upper Yellow River, China

Abstract

Summary Length–weight relationships (LWRs) of three Chinese endemic fish species (Gymnocypris eckloni eckloni Herzenstein, 1891, Platypharodon extremus Herzenstein, 1891 and Triplophysa pseudoscleroptera (Zhu & Wu, 1981)) were analyzed, collecting from the upper Yellow River (Xunhua and Guide Counties, Qinghai Province). Totally 347 specimens monthly collected by gill nets with 40 mm mesh size and traps with 5 m length from August to October 2014, were used to estimate the relationship parameters. The allometric factor b values ranged from 2.96 in T. pseudoscleroptera to 3.33 in G. eckloni eckloni. The condition factor a values varies between 0.0063 and 0.0175 in three species. Three WLRs of fishes distributed in the upper Yellow River were firstly reported and will fill in some of the empty spaces on endemic species in the Fishbase.

Length-weight and length-length relationships of four endemic fish species caught from Payra River, Southern Bangladesh

“…According to the Fishbase and scientific literature, no LWRs information was available for Ompok pabo , Acentrogobius cyanomos and A. caninus . The exponent b of LWRs for all populations fluctuated within the limit of 2.5 < b < 3.5 which were in agreement with findings of other researchers (Froese, ; Han et al., ; Ilkyaz, Metin, Soykan, & Kinacigil, ; Islam et al., ; Siddik, Hanif, Chaklader, Nahar, & Mahmud, ). The results obtained from the present study were also compared against Bayesian LWRs data and all are fell within the 95% confidence limits of the Bayesian prediction in FishBase (Froese, Thorson, & Reyes, ).…”