“…These relationships are applied in different ways, from biomass calculation (Martin‐Smith, ) to ontogenetic analyzes (Safran, ) and aspects of population dynamics (Kohler, Casey, & Turner, ). Studies of length–weight relationship (LWR), combined with other parameters, allow to know the life cycle of the fish (Freitas, Prudente, Fontoura, & Montag, ) and of length–length relationships (LLR) to compare the growth of the populations, aiding in proper management (Machado, Oliveira, Silva, & Giarrizzo, ). Although easily obtained, the LWR and LLR parameters of most fish species remain unavailable (Azevedo‐Santos et al, ; Froese, ).…”