Final answer:
The three classical fishery management problems are overharvesting, the tragedy of the commons, and economic pressures encouraging unsustainable fishing practices.
Step-by-step explanation:
Three classical fishery management problems include overharvesting, the tragedy of the commons, and economic pressures on fisheries. Overharvesting occurs when fishers, equipped with advanced technology, catch fish at rates that exceed the ability of fish populations to replenish. The tragedy of the commons refers to the lack of incentive for individual fishers to conserve shared resources, leading to overexploitation. Additionally, economic pressures influence fishers to continue fishing even when it's unsustainable because the short-term profits are too tempting, as seen with whale fisheries historically. Measures such as the creation of marine protected areas, abolishing capacity-enhancing subsidies, and establishing fishing limits are important steps to manage these issues and ensure sustainable fishing practices.