The article highlights a significant increase in bigeye tuna prices, attributed to a decrease in supply due to a reduced ocean longline fishing fleet. Market data shows a rise in bigeye tuna prices in the Eastern Pacific, Pacific, and Atlantic Oceans, while prices in the Indian Ocean remain stable. The decline in bigeye and yellowfin tuna stocks has led to market concerns about future supply issues. In contrast, bluefin tuna prices have rebounded after a dip, driven by supply adjustments and international market dynamics. The article also mentions fluctuations in the tuna market due to changes in demand and supply, with the market's attention focused on future supply and the potential for continued price volatility.