Fears concerning over-fishing of yellow-fin tuna have led the Mexican Ministry of Agriculture, Livestock, Fishing and Food to implement emergency quota restrictions. Jeronimo Ramos Saenz Pardo, a senior official at the ministry, explained that the new restrictions also include a ban on fishing methods that do not protect immature tuna or other non-commercial species, such as dolphin. Over recent months the accidental capture of unwanted fish has increased, he said.