The Indian Ocean Tuna Commission (IOTC) has decided to reduce the bigeye tuna fishing quota in the Indian Ocean from 35,000 metric tons to more than 11,000 metric tons due to depleting resources. The current quota will be reduced to 11,488 metric tons for Taiwan, with a 16.7% reduction for developed countries and a smaller reduction for developing countries. The move aims to facilitate the conservation of bigeye tuna. The article also highlights the challenges faced by Taiwan's deep-sea fishing industry, with decreasing catches in the Atlantic and Indian Oceans, and the impact of the global pandemic.