Length-weight relationships of 41 selected demersal fishes from the Campeche Bank in the Gulf of Mexico

Length (to the nearest 0.01 cm) and weight (to the nearest 0.01 g) relationships (LWR) were estimated for 41 fish species, representing a total of 19 families from the Campeche Bank and the surrounding Yucatan Peninsula, Mexico. All specimens were collected during three oceanographic study surveys (November 2015 -together with April 2016, August to October 2016, and July to August 2018) using a shrimp trawl net (18.3 m in length and 3.4 mesh size), for one mile (2.5 knots) in 18 locations; with one trawl haul per location for the aforementioned survey periods, respectively. North of the Yucatan Peninsula, five lobster traps (1.0 x 0.50 m in dimension, and 2.5 mesh size) were positioned at each of the 20 stations, during two annual periods (October 2016, and July 2018); traps were set for 3-4 h. Depth for the 38 locations ranged between 16 and 200 m. Syacium papillosum and Diplectrum formosum were the most abundant species. New maximum standard length (SL) was obtained for Sargocentron bullisi, Ogcocephalus parvus and Syacium gunteri.