Are all fishery boats owned by the marine police?

Yes China's patrols, China's fishery administration, China's marine police and law enforcement forces, including some customs, are all unified under the command system of China Marine Police, effectively taking care of, coordinating and directing China's maritime law enforcement actions. Marine Police refers to maritime vigilance, which is also the abbreviation of People's Republic of China (PRC) and the National Marine Police. Originally under the Ministry of Land and Resources, the State Oceanic Administration (China Marine Police) Marine Police Force.