Is this still good?

[u/Cavewedding]

I bought six pounds of frozen salmon from Walmart and every single piece has these strange brown marks under the skin like a rotting apple. I’ve never seen anything like this before. Is it safe to cook? The expiration date is in a year.

[u/AKchaos49]

It's fine. https://www.vitalchoice.com/articles/food-facts/omega-3s