Can salmon be stored in the freezer if it cannot be eaten?
Generally, uneaten salmon can be stored in the freezer, provided it has not spoiled and is properly handled. However, if the salmon has already gone bad, freezing is not recommended and it should be discarded immediately. Detailed explanations are as follows:

If the salmon is fresh and unspoiled, it should be promptly sealed tightly in airtight bags or vacuum packaging and placed into a freezer at -18°C or below. This effectively inhibits bacterial growth and extends shelf life. This method helps preserve the nutritional value and flavor of the salmon well, making it safe to thaw, cook, and consume later.
If the salmon shows signs of spoilage—such as sticky texture, unpleasant odor, or dull discoloration—freezing will not eliminate the harmful substances already produced. Consuming such salmon after thawing may still cause gastrointestinal discomfort. Therefore, spoiled salmon must be firmly discarded and should not be refrozen or saved.
For daily storage, it's advisable to freeze salmon as soon as possible while it's still fresh, avoiding repeated freeze-thaw cycles. It's best to consume frozen salmon within 1 to 3 months. Before eating, ensure thorough thawing and cook thoroughly to better ensure food safety and optimal taste.