Length–weight relationships of 20 fish species from Bahía de Matanchen, in the southeast Gulf of California, Mexico

Length-weight relationship (LWR) parameters were determined for 20 fish species belonging to 14 genera and seven families. The fishes were collected monthly (May 2013 to February 2014) by soft-bottom trawls in Bahia de Matanchen, southeast of the Gulf of California. Sizes ranged between 5.5 and 36.0cm total length (TL) and weighed between 1 and 901g. The allometric coefficient (b) of the LWR varied from 2.638 for Chloroscombrus orqueta to 3.668 for Neopisthopterus tropicus. This is the first report of LWR estimations for 15 of the species.