If you are looking for commercial or recreational fishing regulations for federally managed waters in the Gulf of Mexico, the Gulf of Mexico Fishery Council puts out the commercial and recreational fishing regulations. The link to the recreational regs for 2012 (updated 1/2013) is http://www.gulfcouncil.org/Beta/GMFMCWeb/downloads/Recreational%20Regs%20Brochure%202012.pdf. More information is available at http://www.gulfcouncil.org/fishing_regulations/index.php, and they have a smart phone app for the regulations. There are links from the council’s homepage.
Federal water fishing regulations in the Gulf of Mexico