What does it mean, ecologically and economically, for a fishery to be fully exploited?

A fishery is considered fully exploited when it achieves the maximum sustainable yield (MSY), meaning that the harvest rate matches the rate at which the fish population can replenish itself. Ecologically, full exploitation maintains a balance between fishing efforts and fish populations, preventing ecosystem damage and preserving food webs. Economically, it leads to the most revenue generation without overexploiting resources, ensuring long-term profitability while considering fishing costs and resource management. Maintaining full exploitation is crucial for sustaining fish stocks, marine ecosystems, and the fishing industry, which can be achieved through various management strategies like quota systems, size limits, and closed seasons.