Is China's fishing fleet taking all of West Africa's fish?
Mozambique’s fisheries sector says the country loses about $60m (£46m) annually due to illegal fishing.
It says the situation results from clandestine operations that are being carried out mostly by foreign vessels.
Fisheries Minister Augusta Maíta said most of the boats that have been seized for carrying out illegal fishing were registered in countries such as Panama, Seychelles and Russia.
Ms Maita said a satellite unit to monitor fishing activity in southern Africa will start operating next year, which should reduce illegal fishing.