The main problems facing Japan's fishery at present

At present, the main problems facing Japanese fisheries are: 1. A large number of industrial wastewater and domestic sewage discharge have obviously deteriorated the water quality in the coastal waters; 2. Reclaiming the sea to build ponds in coastal areas has destroyed the places where fish grow and breed; 3. The world fuel price rises and the cost increases; 4. Japan's domestic economic development and population growth