Dianchang Zhang^1,2,3 , Kecheng Zhu^1,2,3 , Fahui Gong^1,2 , Xiaoxiao Sun^1,2 , Shigui Jiang^1,2,3

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
Author    Correspondence author
International Journal of Aquaculture, 2016, Vol. 6, No. 9   
Received: 16 Jan., 2016    Accepted: 27 Feb., 2016    Published: 23 Jun., 2016

This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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 W_SL=1.09×L^0.65 for S. leptolepis, W_CK=0.31×L^1.05 for C. kalla, and W_LL=0.12×L^1.20 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.

Length-weight relationship; Morphometry; Selaroides leptolepis; Caranx kalla; Lactarius lactarius