Length‐weight relationship of fish species captured around an artificial offshore reef (northern Rio de Janeiro, Brazil)

Abstract

The present work provides length‐weight relationships (LWRs) for fish species captured around artificial offshore reef deployed 5 km from Guaxindiba Port, northern Rio de Janeiro, Brazil. The fish were captured during two sampling periods each year between 1996 and 2017 using bottom gill nets (25 mlength × 3 mdepth; 30 mm mesh). The fish were kept on ice and the biometric data, including total length (cm) and total wet weight (g) were determined in the laboratory. A total of 16 species belonging to 10 families were analyzed with Sciaenidae being the species richest family (5 spp) in the samples. The new value of LWRs for Sphyraena guachancho and new maximum sizes recorded for seven species highlight the scarcity of information on biological aspects of South America coastal fishes. These LWRs should assist fisheries scientist and managers to complement their further studies of population parameters to improve management decisions.

Length frequency distribution and length-weight relationships of Euthynnus sp. in North Sumatera, Indonesia

“…They are an important component of the Fish Base [14]. Therefore, the length-weight relationship often be a popular tool to provide the information that supporting the assessment of fish stocks in the world [15] [16]. The research of the length-weight relationship of fish was to determine the specific weight and length variations of fish individually or in groups of individuals as an indicator of factor condition, health, productivity and physiological conditions including gonadal development [17][18].…”