1 South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China
2 Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture, Guangzhou, 510300, China
3 Key Laboratory of Fishery Ecology Environment, Guangdong, China
International Journal of Aquaculture, 2016, Vol. 6, No. 9
Received: 16 Jan., 2016 Accepted: 27 Feb., 2016 Published: 23 Jun., 2016
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The length-weight relationships and truss network for three salt-fresh water fish species (Selaroides leptolepis, Caranx kalla and Lactarius lactarius) in Pearl River Estuary, South China during November 11th 2015 were analyzed. The length-weight relationships of the studied fishes could be expressed as WSL=1.09×L0.65 for S. leptolepis, WCK=0.31×L1.05 for C. kalla, and WLL=0.12×L1.20 for L. lactarius which indicated that all of them were negative allometric. Body length of S. leptolepis varied from 10.19 to 12.84 cm, and the wet weight ranged from 28.45 to 41.77 g. Body length of C. kalla varied from 4.22 to 7.42 cm, and wet weight ranged from 12.77 to 22.21 g. Body length of L. lactarius varied from 7.44 to 14.16 cm, and wet weight ranged from 30.03 to 53.02 g. The study provided first biological reference in these species in Pearl River Estuary. Those data assumed an important requirement in fishery biological investigations and mainly deals with determining the variations in the expected weight from the known length groups.
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