Length–weight relationships of nine fish species from the Tongjiang section of the Songhua River, China

Length-weight relationships were evaluated for nine fish species from the Tongjiang section of the Songhua River in China. A total of 675 fish specimens were collected from 4 May to 29 October 2014. Length-weight relationships for six fish species (Romanogobio tenuicorpus, Leuciscus waleckii, Opsariichthys bidens, Microphysogobio amurensis, Pelteobagrus ussuriensis and Misgurnus mohoity) were new to FishBase in 2015, but the length-weight relationships of P.ussuriensis was studied by Ma in 2015. New data on M.mohoity is offered, and this study also shows new maximum total lengths for three fish species. The r(2) values ranged from .95 to .99. Values of b varied from 2.504 to 3.471.