Newsletters The newsletters service provides you with the opportunity to view and use information collected from a variety of sources.  Often considered "grey" literature, many find newsletters as an excellent source of timely information.  We encourage you to contact AquaNIC staff about sharing information with people who may benefit from it.  If you have questions about how to post newsletters then please contact LaDon Swann. Associations - News from many state, national and international aquaculture associations. Federal - Sources of information from US Federal agencies. USDA Regional Aquaculture Centers - Regular newsletters from the five USDA Regional Aquaculture Centers. State - News from either state departmental agencies, university extension professionals or other state sources. Other News - Magazines, international newsletters and other sources of timely news.