1. Fat Oxidation (Most Common Cause)
Salmon is rich in healthy fats. When it’s stored too long in the freezer or exposed to air, those fats oxidize—similar to how a cut apple browns.
✔ Causes yellow or slightly dull patches
✔ Safe to eat if everything else is normal
❗ Flavor may be less fresh or slightly off
2. Freezer Burn
If the salmon wasn’t tightly wrapped, air gets in and dries out parts of the fish.
✔ Can appear as yellow, pale, or whitish spots
✔ Texture becomes dry in those areas
✔ You can cut off the affected parts and use the rest
3. Natural Fat Deposits
Sometimes what looks yellow is just fat distribution, especially in certain cuts.
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