When buying or packing salmon, freshness is key to both taste and safety. From my experience, one common challenge is dealing with salmon that has been sitting out too long, which can impact its texture and flavor. I've noticed that some vendors try to quickly pack leftover salmon to avoid waste, but this sometimes results in less fresh fish ending up in the packaging. To avoid this, pay attention to the salmon's color and smell before purchase. Fresh salmon typically has a bright, vibrant color and a clean, mild scent—not sour or fishy. Also, ask the seller about the catch or delivery date. If you observe that the fish looks dull or has an off odor, it's best to reconsider buying it. In situations where salmon is being packed into boxes, as I learned from a recent visit to a local market, sellers may try to fill the boxes completely to please customers or reduce waste. However, this can lead to mixing fresh and less fresh pieces. Always ask to inspect the salmon before it's packed or request that the freshest pieces be selected. Proper handling at home is also important. Refrigerate salmon immediately and consume it within one to two days for optimal freshness. If storing longer, freezing is recommended. By following these tips and being mindful when purchasing salmon, you can enjoy delicious, high-quality fish every time.