The length–weight relationships and clasper maturity of two shark (Carcharhinus sorrah, Carcharhinus falciformis) of landed in Prigi Coastal fishing Port Trenggalek East Jawa

Length-weight and length-length relationships of 16 marine fish species in Vietnam

“…Our study was conducted in the upwelling areas of the South China Sea (Hu and Wang, 1988;Kuo et al, 2000;Xie et al, 2003), which are rich in organic material and prey sources. Therefore, most of the species evaluated in this study show faster growth rates than those in other marine areas (Uchiyama and Boggs, 2006;Sawant and Raje, 2009;Zhu et al, 2009;Ahmed et al, 2014;Fakhri et al, 2015;Lelono et al, 2021). We collected specimens using commercial gillnets that captured substantial mature-sized fish, while other studies have used multiple methods, such as trawling, longlining, angling, purse seine fishing and port-based sampling, which included a wide range of sizes (Sawant and Raje, 2009;Zhu et al, 2009;Ahmed et al, 2014;Fakhri et al, 2015;Lelono et al, 2021;Nguyen et al, 2022).…”

“…Therefore, most of the species evaluated in this study show faster growth rates than those in other marine areas (Uchiyama and Boggs, 2006;Sawant and Raje, 2009;Zhu et al, 2009;Ahmed et al, 2014;Fakhri et al, 2015;Lelono et al, 2021). We collected specimens using commercial gillnets that captured substantial mature-sized fish, while other studies have used multiple methods, such as trawling, longlining, angling, purse seine fishing and port-based sampling, which included a wide range of sizes (Sawant and Raje, 2009;Zhu et al, 2009;Ahmed et al, 2014;Fakhri et al, 2015;Lelono et al, 2021;Nguyen et al, 2022). In addition to incomplete information on the LWRs and LLRs of the species investigated, the length-at-age, length-at-maturity and growth rate of these species in Vietnamese waters-important biological factors needed to carry out a stock assessment-are unknown.…”