Commercial fishing is the practice of catching fish and other seafood for sale and profit. This industry plays a vital role in the global economy, providing food and jobs to millions of people. Fishermen use various methods, such as trawling, longlining, and netting, to harvest fish from oceans, rivers, and lakes. The fish caught in commercial fishing include species like salmon, tuna, and cod. Sustainable practices are increasingly important to ensure that fish populations remain healthy and ecosystems are protected. Regulations and quotas are often established to manage fish stocks and minimize environmental impact.