Length-weight relationships (LWRs) were estimated for four fish species [Spinibarbus hollandi (Oshima, 1919), Distoechodon tumirostris (Peters, 1881), Bangana decora (Peters, 1881), Ptychidio longibarbus (Fang, 1981)] from Liujiang River, China. Fishes were collected from local fish markets that using various fishing gears such as gillnets, castnets and shrimp cages in July and December 2018. The LWRs parameters a and b values for the four species varied 0.008861-0.02018 and 3.041-3.367. New maximum standard lengths for one species was presented in this paper. And the LWRs for two species: Bangana decora and Ptychidio longibarbus is reported for the first time. The result will be very helpful in fisheries management and species conservation.
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