A major component of unreported catches in Mexico is by catch in the shrimp fishery, particularly by in dustrial bottom trawlers. The high economic value of shrimp results in discarding of bycatch species, which are high due to the tropical environments in which shrimp are caught ,and the unselective gears that are used. Catches were firsts eparated into artisanal and industrial sectors based on the historical number of vessels by sector (1970– 2007 from [31], other years linearly extrapolated )and current catch ratio [29].