Length‐weight relationships of six Nemacheilid fish species (Teleostei: Cypriniformes) from different rivers of Manipur, India

Abstract

The length‐weight relationships (LWRs) of six Nemacheilid species (Schistura chindwinica, S. fasciata, S. khugae, S. minuta, S. reticulata and S. rubrimaculata) have been analyzed. Fish samples were collected on quarterly basis from March 2018 to February 2019. Sampling was performed using cast nets (mesh size 5–10 mm; about 50 sq m area covered each time and water depth was 4 ft approx.), and electrofishing (Ultrasonic Inverter Electro Fisher, 24 volts, 4 m) in the day time. The total length (TL) of individual fish was measured to 0.1 cm with a digital caliper and body weights (BW) were measured to 0.001 g with digital electronic balances. The parameters for the LWR equations were calculated, and the respective statistics such as the 95% confidence interval for parameters “a” and “b” are provided as well as the coefficient of correlation. For five species a new maximum total length has been documented.

Length–weight relationship of six endemic fish species in the Qinghai‐Tibet Plateau, China

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Length-weight relationships (LWRs) of fish are applied to elucidate relationship between total length or standard length and body weight (Duvan Gomez-Vanega & López-Uriarte, 2021;Munilkumar et al, 2021;Zhang et al, 2018). LWRs are useful in fishery science and management provided they are obtained in combination with other essential parameters required for stock assessment (Danielle, 2017).

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Length-weight relationships and condition factors of Cephalopholis argus harvested in the northern coast of Aceh, Indonesia

“…The LWRs information can be utilized to examine the growth shape between fish sexes [4][5][6][7], seasonal variation [4,8,9], the population from different locations [5,9,10], and different environmental conditions [9]. On the other hand, the condition factor value can determine the state of a fish population in their habitat [11].…”