Members of the Pacific Alliance for Sustainable Tuna - Grupomar, Herdez Del Fuerte, Pesca Azteca, and Procesa - Make Significant Move for the Environment MEXICO CITY, June 16, 2015 /PRNewswire/ -- Today, the member companies of the Pacific Alliance for Sustainable Tuna, an alliance of leading tuna fishing companies, representing 93% of total tuna production in Mexico, demonstrated their continued