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Lengthweight relations for 20 fish species from the Pearl River, China


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The length–weight relations (LWR) were estimated for 20 fish species from the Pearl River, South China. A total of 3610 specimens representing 10 families were used to estimate the relation parameters. The b values in the LWR (W = aLb) ranged from 2.068 for Odontamblyopus lacepedii (Temminck et Schlegel, 1845) to 3.423 for Pseudogobius javanicus (Bleeker, 1856). The LWR with high coefficient of determination (r2) is significant for all the species. The r2 value ranged from 0.919 to 0.993. This study presents the first reference on length–weight relations for 7 species and new records of maximum total length for 6 species. The results may be helpful in future fisheries studies in this area.

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  • School of Life Sciences, Sun yat-sen University, Guangzhou, China
  • School of Life Sciences, Guangzhou University, Guangzhou, China
  • School of Life Sciences, Sun yat-sen University, Guangzhou, China
  • School of Life Sciences, Sun yat-sen University, Guangzhou, China


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