My MIL bought salmon for us a week ago. I planned to make it for dinner today, but when I took it out of the fridge and defrosted it, I noticed a yellow stain on it. What is this? Is it safe to eat? I have kids and don’t want to make them sick. Should I throw it away?

Sign

What It Means

Strong sour, rancid, or ammonia smell

Bacterial spoilage or fat rancidity

Slimy or sticky surface

Microbial growth

Dull, grayish flesh (not just yellow)

Advanced spoilage

Yellow/green mold spots

Fungal contamination

❗ Never taste-test questionable fish—foodborne illness from spoiled seafood can be severe.

🔒 How to Prevent Discoloration in the Future

Freeze properly: Wrap salmon tightly in plastic wrap + foil, or use vacuum-sealed bags to limit air exposure.

Label and date: Use within 2–3 months for best quality (safe up to 6 months, but flavor degrades).

Thaw safely: In the fridge (not on the counter) to prevent bacterial growth.

Buy fresh: Look for bright, firm fillets with a mild ocean scent—not fishy.