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Fish is a vital dietary constituent as of its high protein value. Fish body length and body weight are two functional experimental procedures in stock estimation and more commonly in different aspects of fields such as population ecology, community and ecosystem ecology studies (Giarrizzo et al., 2015; Baitha et al., 2018). Fish growth is generally calculated through the increase of length and weight, which are used to conclude population development. The length-weight relationship (LWR) is a mathematic form that allocates for the exchange of length for weight and weight for length in reserve assessment models, as well as the assessment of biomass from the length distribution (Oscoz et al., 2005). The LWR is used to conclude feasible variation among separate stock units of a species or within a species, supplied all units are studied with the similar fully standardized sampling method (Dieb-Magalhães et al., 2015; Baitha et al., 2018).
LWR is as well used for approximation the condition factor of fish, which is utilized to evaluate the fitness of fish populations. A high condition factor points out that a fish is heavier, comparatively than a fish of the similar length with a lower condition factor, and consequently all time passes on to a difference from the average LWR for a population (Le Cren, 1951; Froese, 2006; Freitas et al., 2017). The analysis of LWR and condition factors of fish populations are imperative tools to maintain the normal management of fishing reserves and can facilitate in the completion of public policies (Dieb-Magalhães et al., 2015; Giarrizzo et al., 2015; Silva et al., 2015; Baitha et al., 2018). In biometric studies, it is essential to conclude the growth individuality associated with the weight and length of the fish (Morato et al., 2001).
Furthermore, to the condition of health of the species controlled by many biological as well as environmental factors. The value of determining LWRs in fish has been accentuated by several studies. It gives information regarding the growth pattern, general health, habitat situation, life record, fish size, and condition, as well as morphological characteristics of the fish (Schneider et al., 2000; Froese, 2006). LWRs are elucidated in a formula, which allocates the assessment of the fish weight (W) to a particular length (L), and may be...